1 | package AnyEvent::Handle; |
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2 | |
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3 | no warnings; |
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4 | use strict qw(subs vars); |
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5 | |
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6 | use AnyEvent (); |
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7 | use AnyEvent::Util qw(WSAEWOULDBLOCK); |
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8 | use Scalar::Util (); |
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9 | use Carp (); |
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10 | use Fcntl (); |
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11 | use Errno qw(EAGAIN EINTR); |
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12 | |
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13 | =head1 NAME |
1 | =head1 NAME |
14 | |
2 | |
15 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
3 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
16 | |
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17 | =cut |
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18 | |
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19 | our $VERSION = 4.45; |
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20 | |
4 | |
21 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
22 | |
6 | |
23 | use AnyEvent; |
7 | use AnyEvent; |
24 | use AnyEvent::Handle; |
8 | use AnyEvent::Handle; |
25 | |
9 | |
26 | my $cv = AnyEvent->condvar; |
10 | my $cv = AnyEvent->condvar; |
27 | |
11 | |
28 | my $handle = |
12 | my $hdl; $hdl = new AnyEvent::Handle |
29 | AnyEvent::Handle->new ( |
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30 | fh => \*STDIN, |
13 | fh => \*STDIN, |
31 | on_eof => sub { |
14 | on_error => sub { |
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15 | my ($hdl, $fatal, $msg) = @_; |
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16 | warn "got error $msg\n"; |
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17 | $hdl->destroy; |
32 | $cv->send; |
18 | $cv->send; |
33 | }, |
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34 | ); |
19 | ); |
35 | |
20 | |
36 | # send some request line |
21 | # send some request line |
37 | $handle->push_write ("getinfo\015\012"); |
22 | $hdl->push_write ("getinfo\015\012"); |
38 | |
23 | |
39 | # read the response line |
24 | # read the response line |
40 | $handle->push_read (line => sub { |
25 | $hdl->push_read (line => sub { |
41 | my ($handle, $line) = @_; |
26 | my ($hdl, $line) = @_; |
42 | warn "read line <$line>\n"; |
27 | warn "got line <$line>\n"; |
43 | $cv->send; |
28 | $cv->send; |
44 | }); |
29 | }); |
45 | |
30 | |
46 | $cv->recv; |
31 | $cv->recv; |
47 | |
32 | |
48 | =head1 DESCRIPTION |
33 | =head1 DESCRIPTION |
49 | |
34 | |
50 | This module is a helper module to make it easier to do event-based I/O on |
35 | This module is a helper module to make it easier to do event-based I/O on |
51 | filehandles. For utility functions for doing non-blocking connects and accepts |
36 | filehandles. |
52 | on sockets see L<AnyEvent::Util>. |
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53 | |
37 | |
54 | The L<AnyEvent::Intro> tutorial contains some well-documented |
38 | The L<AnyEvent::Intro> tutorial contains some well-documented |
55 | AnyEvent::Handle examples. |
39 | AnyEvent::Handle examples. |
56 | |
40 | |
57 | In the following, when the documentation refers to of "bytes" then this |
41 | In the following, when the documentation refers to of "bytes" then this |
58 | means characters. As sysread and syswrite are used for all I/O, their |
42 | means characters. As sysread and syswrite are used for all I/O, their |
59 | treatment of characters applies to this module as well. |
43 | treatment of characters applies to this module as well. |
60 | |
44 | |
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45 | At the very minimum, you should specify C<fh> or C<connect>, and the |
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46 | C<on_error> callback. |
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47 | |
61 | All callbacks will be invoked with the handle object as their first |
48 | All callbacks will be invoked with the handle object as their first |
62 | argument. |
49 | argument. |
63 | |
50 | |
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51 | =cut |
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52 | |
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53 | package AnyEvent::Handle; |
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54 | |
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55 | use Scalar::Util (); |
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56 | use List::Util (); |
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57 | use Carp (); |
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58 | use Errno qw(EAGAIN EINTR); |
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59 | |
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60 | use AnyEvent (); BEGIN { AnyEvent::common_sense } |
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61 | use AnyEvent::Util qw(WSAEWOULDBLOCK); |
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62 | |
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63 | our $VERSION = $AnyEvent::VERSION; |
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64 | |
64 | =head1 METHODS |
65 | =head1 METHODS |
65 | |
66 | |
66 | =over 4 |
67 | =over 4 |
67 | |
68 | |
68 | =item $handle = B<new> AnyEvent::TLS fh => $filehandle, key => value... |
69 | =item $handle = B<new> AnyEvent::TLS fh => $filehandle, key => value... |
69 | |
70 | |
70 | The constructor supports these arguments (all as C<< key => value >> pairs). |
71 | The constructor supports these arguments (all as C<< key => value >> pairs). |
71 | |
72 | |
72 | =over 4 |
73 | =over 4 |
73 | |
74 | |
74 | =item fh => $filehandle [MANDATORY] |
75 | =item fh => $filehandle [C<fh> or C<connect> MANDATORY] |
75 | |
76 | |
76 | The filehandle this L<AnyEvent::Handle> object will operate on. |
77 | The filehandle this L<AnyEvent::Handle> object will operate on. |
77 | |
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78 | NOTE: The filehandle will be set to non-blocking mode (using |
78 | NOTE: The filehandle will be set to non-blocking mode (using |
79 | C<AnyEvent::Util::fh_nonblocking>) by the constructor and needs to stay in |
79 | C<AnyEvent::Util::fh_nonblocking>) by the constructor and needs to stay in |
80 | that mode. |
80 | that mode. |
81 | |
81 | |
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82 | =item connect => [$host, $service] [C<fh> or C<connect> MANDATORY] |
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83 | |
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84 | Try to connect to the specified host and service (port), using |
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85 | C<AnyEvent::Socket::tcp_connect>. The C<$host> additionally becomes the |
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86 | default C<peername>. |
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87 | |
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88 | You have to specify either this parameter, or C<fh>, above. |
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89 | |
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90 | It is possible to push requests on the read and write queues, and modify |
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91 | properties of the stream, even while AnyEvent::Handle is connecting. |
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92 | |
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93 | When this parameter is specified, then the C<on_prepare>, |
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94 | C<on_connect_error> and C<on_connect> callbacks will be called under the |
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95 | appropriate circumstances: |
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96 | |
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97 | =over 4 |
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98 | |
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99 | =item on_prepare => $cb->($handle) |
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100 | |
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101 | This (rarely used) callback is called before a new connection is |
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102 | attempted, but after the file handle has been created. It could be used to |
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103 | prepare the file handle with parameters required for the actual connect |
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104 | (as opposed to settings that can be changed when the connection is already |
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105 | established). |
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106 | |
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107 | The return value of this callback should be the connect timeout value in |
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108 | seconds (or C<0>, or C<undef>, or the empty list, to indicate the default |
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109 | timeout is to be used). |
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110 | |
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111 | =item on_connect => $cb->($handle, $host, $port, $retry->()) |
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112 | |
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113 | This callback is called when a connection has been successfully established. |
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114 | |
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115 | The actual numeric host and port (the socket peername) are passed as |
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116 | parameters, together with a retry callback. |
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117 | |
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118 | When, for some reason, the handle is not acceptable, then calling |
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119 | C<$retry> will continue with the next conenction target (in case of |
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120 | multi-homed hosts or SRV records there can be multiple connection |
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121 | endpoints). When it is called then the read and write queues, eof status, |
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122 | tls status and similar properties of the handle are being reset. |
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123 | |
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124 | In most cases, ignoring the C<$retry> parameter is the way to go. |
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125 | |
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126 | =item on_connect_error => $cb->($handle, $message) |
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127 | |
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128 | This callback is called when the conenction could not be |
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129 | established. C<$!> will contain the relevant error code, and C<$message> a |
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130 | message describing it (usually the same as C<"$!">). |
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131 | |
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132 | If this callback isn't specified, then C<on_error> will be called with a |
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133 | fatal error instead. |
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134 | |
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135 | =back |
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136 | |
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137 | =item on_error => $cb->($handle, $fatal, $message) |
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138 | |
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139 | This is the error callback, which is called when, well, some error |
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140 | occured, such as not being able to resolve the hostname, failure to |
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141 | connect or a read error. |
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142 | |
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143 | Some errors are fatal (which is indicated by C<$fatal> being true). On |
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144 | fatal errors the handle object will be destroyed (by a call to C<< -> |
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145 | destroy >>) after invoking the error callback (which means you are free to |
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146 | examine the handle object). Examples of fatal errors are an EOF condition |
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147 | with active (but unsatisifable) read watchers (C<EPIPE>) or I/O errors. In |
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148 | cases where the other side can close the connection at their will it is |
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149 | often easiest to not report C<EPIPE> errors in this callback. |
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150 | |
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151 | AnyEvent::Handle tries to find an appropriate error code for you to check |
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152 | against, but in some cases (TLS errors), this does not work well. It is |
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153 | recommended to always output the C<$message> argument in human-readable |
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154 | error messages (it's usually the same as C<"$!">). |
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155 | |
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156 | Non-fatal errors can be retried by simply returning, but it is recommended |
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157 | to simply ignore this parameter and instead abondon the handle object |
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158 | when this callback is invoked. Examples of non-fatal errors are timeouts |
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159 | C<ETIMEDOUT>) or badly-formatted data (C<EBADMSG>). |
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160 | |
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161 | On callback entrance, the value of C<$!> contains the operating system |
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162 | error code (or C<ENOSPC>, C<EPIPE>, C<ETIMEDOUT>, C<EBADMSG> or |
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163 | C<EPROTO>). |
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164 | |
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165 | While not mandatory, it is I<highly> recommended to set this callback, as |
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166 | you will not be notified of errors otherwise. The default simply calls |
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167 | C<croak>. |
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168 | |
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169 | =item on_read => $cb->($handle) |
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170 | |
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171 | This sets the default read callback, which is called when data arrives |
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172 | and no read request is in the queue (unlike read queue callbacks, this |
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173 | callback will only be called when at least one octet of data is in the |
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174 | read buffer). |
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175 | |
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176 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
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177 | method or access the C<< $handle->{rbuf} >> member directly. Note that you |
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178 | must not enlarge or modify the read buffer, you can only remove data at |
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179 | the beginning from it. |
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180 | |
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181 | When an EOF condition is detected then AnyEvent::Handle will first try to |
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182 | feed all the remaining data to the queued callbacks and C<on_read> before |
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183 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
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184 | error will be raised (with C<$!> set to C<EPIPE>). |
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185 | |
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186 | Note that, unlike requests in the read queue, an C<on_read> callback |
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187 | doesn't mean you I<require> some data: if there is an EOF and there |
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188 | are outstanding read requests then an error will be flagged. With an |
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189 | C<on_read> callback, the C<on_eof> callback will be invoked. |
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190 | |
82 | =item on_eof => $cb->($handle) |
191 | =item on_eof => $cb->($handle) |
83 | |
192 | |
84 | Set the callback to be called when an end-of-file condition is detected, |
193 | Set the callback to be called when an end-of-file condition is detected, |
85 | i.e. in the case of a socket, when the other side has closed the |
194 | i.e. in the case of a socket, when the other side has closed the |
86 | connection cleanly. |
195 | connection cleanly, and there are no outstanding read requests in the |
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196 | queue (if there are read requests, then an EOF counts as an unexpected |
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197 | connection close and will be flagged as an error). |
87 | |
198 | |
88 | For sockets, this just means that the other side has stopped sending data, |
199 | For sockets, this just means that the other side has stopped sending data, |
89 | you can still try to write data, and, in fact, one can return from the EOF |
200 | you can still try to write data, and, in fact, one can return from the EOF |
90 | callback and continue writing data, as only the read part has been shut |
201 | callback and continue writing data, as only the read part has been shut |
91 | down. |
202 | down. |
92 | |
203 | |
93 | While not mandatory, it is I<highly> recommended to set an EOF callback, |
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94 | otherwise you might end up with a closed socket while you are still |
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95 | waiting for data. |
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96 | |
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97 | If an EOF condition has been detected but no C<on_eof> callback has been |
204 | If an EOF condition has been detected but no C<on_eof> callback has been |
98 | set, then a fatal error will be raised with C<$!> set to <0>. |
205 | set, then a fatal error will be raised with C<$!> set to <0>. |
99 | |
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100 | =item on_error => $cb->($handle, $fatal) |
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101 | |
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102 | This is the error callback, which is called when, well, some error |
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103 | occured, such as not being able to resolve the hostname, failure to |
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104 | connect or a read error. |
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105 | |
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106 | Some errors are fatal (which is indicated by C<$fatal> being true). On |
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107 | fatal errors the handle object will be shut down and will not be usable |
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108 | (but you are free to look at the current C<< ->rbuf >>). Examples of fatal |
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109 | errors are an EOF condition with active (but unsatisifable) read watchers |
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110 | (C<EPIPE>) or I/O errors. |
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111 | |
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112 | Non-fatal errors can be retried by simply returning, but it is recommended |
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113 | to simply ignore this parameter and instead abondon the handle object |
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114 | when this callback is invoked. Examples of non-fatal errors are timeouts |
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115 | C<ETIMEDOUT>) or badly-formatted data (C<EBADMSG>). |
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116 | |
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117 | On callback entrance, the value of C<$!> contains the operating system |
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118 | error (or C<ENOSPC>, C<EPIPE>, C<ETIMEDOUT> or C<EBADMSG>). |
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119 | |
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120 | While not mandatory, it is I<highly> recommended to set this callback, as |
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121 | you will not be notified of errors otherwise. The default simply calls |
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122 | C<croak>. |
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123 | |
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124 | =item on_read => $cb->($handle) |
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125 | |
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126 | This sets the default read callback, which is called when data arrives |
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127 | and no read request is in the queue (unlike read queue callbacks, this |
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128 | callback will only be called when at least one octet of data is in the |
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129 | read buffer). |
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130 | |
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131 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
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132 | method or access the C<$handle->{rbuf}> member directly. Note that you |
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133 | must not enlarge or modify the read buffer, you can only remove data at |
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134 | the beginning from it. |
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135 | |
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136 | When an EOF condition is detected then AnyEvent::Handle will first try to |
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137 | feed all the remaining data to the queued callbacks and C<on_read> before |
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138 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
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139 | error will be raised (with C<$!> set to C<EPIPE>). |
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140 | |
206 | |
141 | =item on_drain => $cb->($handle) |
207 | =item on_drain => $cb->($handle) |
142 | |
208 | |
143 | This sets the callback that is called when the write buffer becomes empty |
209 | This sets the callback that is called when the write buffer becomes empty |
144 | (or when the callback is set and the buffer is empty already). |
210 | (or when the callback is set and the buffer is empty already). |
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151 | memory and push it into the queue, but instead only read more data from |
217 | memory and push it into the queue, but instead only read more data from |
152 | the file when the write queue becomes empty. |
218 | the file when the write queue becomes empty. |
153 | |
219 | |
154 | =item timeout => $fractional_seconds |
220 | =item timeout => $fractional_seconds |
155 | |
221 | |
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222 | =item rtimeout => $fractional_seconds |
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223 | |
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224 | =item wtimeout => $fractional_seconds |
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225 | |
156 | If non-zero, then this enables an "inactivity" timeout: whenever this many |
226 | If non-zero, then these enables an "inactivity" timeout: whenever this |
157 | seconds pass without a successful read or write on the underlying file |
227 | many seconds pass without a successful read or write on the underlying |
158 | handle, the C<on_timeout> callback will be invoked (and if that one is |
228 | file handle (or a call to C<timeout_reset>), the C<on_timeout> callback |
159 | missing, a non-fatal C<ETIMEDOUT> error will be raised). |
229 | will be invoked (and if that one is missing, a non-fatal C<ETIMEDOUT> |
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230 | error will be raised). |
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231 | |
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232 | There are three variants of the timeouts that work fully independent |
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233 | of each other, for both read and write, just read, and just write: |
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234 | C<timeout>, C<rtimeout> and C<wtimeout>, with corresponding callbacks |
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235 | C<on_timeout>, C<on_rtimeout> and C<on_wtimeout>, and reset functions |
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236 | C<timeout_reset>, C<rtimeout_reset>, and C<wtimeout_reset>. |
160 | |
237 | |
161 | Note that timeout processing is also active when you currently do not have |
238 | Note that timeout processing is also active when you currently do not have |
162 | any outstanding read or write requests: If you plan to keep the connection |
239 | any outstanding read or write requests: If you plan to keep the connection |
163 | idle then you should disable the timout temporarily or ignore the timeout |
240 | idle then you should disable the timout temporarily or ignore the timeout |
164 | in the C<on_timeout> callback, in which case AnyEvent::Handle will simply |
241 | in the C<on_timeout> callback, in which case AnyEvent::Handle will simply |
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237 | |
314 | |
238 | This will not work for partial TLS data that could not be encoded |
315 | This will not work for partial TLS data that could not be encoded |
239 | yet. This data will be lost. Calling the C<stoptls> method in time might |
316 | yet. This data will be lost. Calling the C<stoptls> method in time might |
240 | help. |
317 | help. |
241 | |
318 | |
242 | =item common_name => $string |
319 | =item peername => $string |
243 | |
320 | |
244 | The common name used by some verification methods (most notably SSL/TLS) |
321 | A string used to identify the remote site - usually the DNS hostname |
245 | associated with this connection. Usually this is the remote hostname used |
322 | (I<not> IDN!) used to create the connection, rarely the IP address. |
246 | to connect, but can be almost anything. |
323 | |
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324 | Apart from being useful in error messages, this string is also used in TLS |
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325 | peername verification (see C<verify_peername> in L<AnyEvent::TLS>). This |
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326 | verification will be skipped when C<peername> is not specified or |
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327 | C<undef>. |
247 | |
328 | |
248 | =item tls => "accept" | "connect" | Net::SSLeay::SSL object |
329 | =item tls => "accept" | "connect" | Net::SSLeay::SSL object |
249 | |
330 | |
250 | When this parameter is given, it enables TLS (SSL) mode, that means |
331 | When this parameter is given, it enables TLS (SSL) mode, that means |
251 | AnyEvent will start a TLS handshake as soon as the conenction has been |
332 | AnyEvent will start a TLS handshake as soon as the conenction has been |
252 | established and will transparently encrypt/decrypt data afterwards. |
333 | established and will transparently encrypt/decrypt data afterwards. |
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334 | |
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335 | All TLS protocol errors will be signalled as C<EPROTO>, with an |
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336 | appropriate error message. |
253 | |
337 | |
254 | TLS mode requires Net::SSLeay to be installed (it will be loaded |
338 | TLS mode requires Net::SSLeay to be installed (it will be loaded |
255 | automatically when you try to create a TLS handle): this module doesn't |
339 | automatically when you try to create a TLS handle): this module doesn't |
256 | have a dependency on that module, so if your module requires it, you have |
340 | have a dependency on that module, so if your module requires it, you have |
257 | to add the dependency yourself. |
341 | to add the dependency yourself. |
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285 | |
369 | |
286 | Instead of an object, you can also specify a hash reference with C<< key |
370 | Instead of an object, you can also specify a hash reference with C<< key |
287 | => value >> pairs. Those will be passed to L<AnyEvent::TLS> to create a |
371 | => value >> pairs. Those will be passed to L<AnyEvent::TLS> to create a |
288 | new TLS context object. |
372 | new TLS context object. |
289 | |
373 | |
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374 | =item on_starttls => $cb->($handle, $success[, $error_message]) |
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375 | |
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376 | This callback will be invoked when the TLS/SSL handshake has finished. If |
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377 | C<$success> is true, then the TLS handshake succeeded, otherwise it failed |
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378 | (C<on_stoptls> will not be called in this case). |
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379 | |
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380 | The session in C<< $handle->{tls} >> can still be examined in this |
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381 | callback, even when the handshake was not successful. |
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382 | |
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383 | TLS handshake failures will not cause C<on_error> to be invoked when this |
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384 | callback is in effect, instead, the error message will be passed to C<on_starttls>. |
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385 | |
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386 | Without this callback, handshake failures lead to C<on_error> being |
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387 | called, as normal. |
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388 | |
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389 | Note that you cannot call C<starttls> right again in this callback. If you |
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390 | need to do that, start an zero-second timer instead whose callback can |
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391 | then call C<< ->starttls >> again. |
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392 | |
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393 | =item on_stoptls => $cb->($handle) |
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394 | |
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395 | When a SSLv3/TLS shutdown/close notify/EOF is detected and this callback is |
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396 | set, then it will be invoked after freeing the TLS session. If it is not, |
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397 | then a TLS shutdown condition will be treated like a normal EOF condition |
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398 | on the handle. |
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399 | |
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400 | The session in C<< $handle->{tls} >> can still be examined in this |
|
|
401 | callback. |
|
|
402 | |
|
|
403 | This callback will only be called on TLS shutdowns, not when the |
|
|
404 | underlying handle signals EOF. |
|
|
405 | |
290 | =item json => JSON or JSON::XS object |
406 | =item json => JSON or JSON::XS object |
291 | |
407 | |
292 | This is the json coder object used by the C<json> read and write types. |
408 | This is the json coder object used by the C<json> read and write types. |
293 | |
409 | |
294 | If you don't supply it, then AnyEvent::Handle will create and use a |
410 | If you don't supply it, then AnyEvent::Handle will create and use a |
… | |
… | |
304 | |
420 | |
305 | sub new { |
421 | sub new { |
306 | my $class = shift; |
422 | my $class = shift; |
307 | my $self = bless { @_ }, $class; |
423 | my $self = bless { @_ }, $class; |
308 | |
424 | |
309 | $self->{fh} or Carp::croak "mandatory argument fh is missing"; |
425 | if ($self->{fh}) { |
|
|
426 | $self->_start; |
|
|
427 | return unless $self->{fh}; # could be gone by now |
|
|
428 | |
|
|
429 | } elsif ($self->{connect}) { |
|
|
430 | require AnyEvent::Socket; |
|
|
431 | |
|
|
432 | $self->{peername} = $self->{connect}[0] |
|
|
433 | unless exists $self->{peername}; |
|
|
434 | |
|
|
435 | $self->{_skip_drain_rbuf} = 1; |
|
|
436 | |
|
|
437 | { |
|
|
438 | Scalar::Util::weaken (my $self = $self); |
|
|
439 | |
|
|
440 | $self->{_connect} = |
|
|
441 | AnyEvent::Socket::tcp_connect ( |
|
|
442 | $self->{connect}[0], |
|
|
443 | $self->{connect}[1], |
|
|
444 | sub { |
|
|
445 | my ($fh, $host, $port, $retry) = @_; |
|
|
446 | |
|
|
447 | if ($fh) { |
|
|
448 | $self->{fh} = $fh; |
|
|
449 | |
|
|
450 | delete $self->{_skip_drain_rbuf}; |
|
|
451 | $self->_start; |
|
|
452 | |
|
|
453 | $self->{on_connect} |
|
|
454 | and $self->{on_connect}($self, $host, $port, sub { |
|
|
455 | delete @$self{qw(fh _tw _ww _rw _eof _queue rbuf _wbuf tls _tls_rbuf _tls_wbuf)}; |
|
|
456 | $self->{_skip_drain_rbuf} = 1; |
|
|
457 | &$retry; |
|
|
458 | }); |
|
|
459 | |
|
|
460 | } else { |
|
|
461 | if ($self->{on_connect_error}) { |
|
|
462 | $self->{on_connect_error}($self, "$!"); |
|
|
463 | $self->destroy; |
|
|
464 | } else { |
|
|
465 | $self->_error ($!, 1); |
|
|
466 | } |
|
|
467 | } |
|
|
468 | }, |
|
|
469 | sub { |
|
|
470 | local $self->{fh} = $_[0]; |
|
|
471 | |
|
|
472 | $self->{on_prepare} |
|
|
473 | ? $self->{on_prepare}->($self) |
|
|
474 | : () |
|
|
475 | } |
|
|
476 | ); |
|
|
477 | } |
|
|
478 | |
|
|
479 | } else { |
|
|
480 | Carp::croak "AnyEvent::Handle: either an existing fh or the connect parameter must be specified"; |
|
|
481 | } |
|
|
482 | |
|
|
483 | $self |
|
|
484 | } |
|
|
485 | |
|
|
486 | sub _start { |
|
|
487 | my ($self) = @_; |
310 | |
488 | |
311 | AnyEvent::Util::fh_nonblocking $self->{fh}, 1; |
489 | AnyEvent::Util::fh_nonblocking $self->{fh}, 1; |
312 | |
490 | |
|
|
491 | $self->{_activity} = |
|
|
492 | $self->{_ractivity} = |
313 | $self->{_activity} = AnyEvent->now; |
493 | $self->{_wactivity} = AE::now; |
314 | $self->_timeout; |
494 | |
|
|
495 | $self->timeout (delete $self->{timeout} ) if $self->{timeout}; |
|
|
496 | $self->rtimeout (delete $self->{rtimeout}) if $self->{rtimeout}; |
|
|
497 | $self->wtimeout (delete $self->{wtimeout}) if $self->{wtimeout}; |
315 | |
498 | |
316 | $self->no_delay (delete $self->{no_delay}) if exists $self->{no_delay}; |
499 | $self->no_delay (delete $self->{no_delay}) if exists $self->{no_delay}; |
317 | |
500 | |
318 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}) |
501 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}) |
319 | if $self->{tls}; |
502 | if $self->{tls}; |
320 | |
503 | |
321 | $self->on_drain (delete $self->{on_drain}) if exists $self->{on_drain}; |
504 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
322 | |
505 | |
323 | $self->start_read |
506 | $self->start_read |
324 | if $self->{on_read}; |
507 | if $self->{on_read} || @{ $self->{_queue} }; |
325 | |
508 | |
326 | $self->{fh} && $self |
509 | $self->_drain_wbuf; |
327 | } |
510 | } |
328 | |
511 | |
329 | sub _shutdown { |
512 | #sub _shutdown { |
330 | my ($self) = @_; |
513 | # my ($self) = @_; |
331 | |
514 | # |
332 | delete @$self{qw(_tw _rw _ww fh wbuf on_read _queue)}; |
515 | # delete @$self{qw(_tw _rw _ww fh wbuf on_read _queue)}; |
333 | $self->{_eof} = 1; # tell starttls et. al to stop trying |
516 | # $self->{_eof} = 1; # tell starttls et. al to stop trying |
334 | |
517 | # |
335 | &_freetls; |
518 | # &_freetls; |
336 | } |
519 | #} |
337 | |
520 | |
338 | sub _error { |
521 | sub _error { |
339 | my ($self, $errno, $fatal) = @_; |
522 | my ($self, $errno, $fatal, $message) = @_; |
340 | |
|
|
341 | $self->_shutdown |
|
|
342 | if $fatal; |
|
|
343 | |
523 | |
344 | $! = $errno; |
524 | $! = $errno; |
|
|
525 | $message ||= "$!"; |
345 | |
526 | |
346 | if ($self->{on_error}) { |
527 | if ($self->{on_error}) { |
347 | $self->{on_error}($self, $fatal); |
528 | $self->{on_error}($self, $fatal, $message); |
|
|
529 | $self->destroy if $fatal; |
348 | } elsif ($self->{fh}) { |
530 | } elsif ($self->{fh}) { |
|
|
531 | $self->destroy; |
349 | Carp::croak "AnyEvent::Handle uncaught error: $!"; |
532 | Carp::croak "AnyEvent::Handle uncaught error: $message"; |
350 | } |
533 | } |
351 | } |
534 | } |
352 | |
535 | |
353 | =item $fh = $handle->fh |
536 | =item $fh = $handle->fh |
354 | |
537 | |
… | |
… | |
378 | $_[0]{on_eof} = $_[1]; |
561 | $_[0]{on_eof} = $_[1]; |
379 | } |
562 | } |
380 | |
563 | |
381 | =item $handle->on_timeout ($cb) |
564 | =item $handle->on_timeout ($cb) |
382 | |
565 | |
383 | Replace the current C<on_timeout> callback, or disables the callback (but |
566 | =item $handle->on_rtimeout ($cb) |
384 | not the timeout) if C<$cb> = C<undef>. See the C<timeout> constructor |
|
|
385 | argument and method. |
|
|
386 | |
567 | |
387 | =cut |
568 | =item $handle->on_wtimeout ($cb) |
388 | |
569 | |
389 | sub on_timeout { |
570 | Replace the current C<on_timeout>, C<on_rtimeout> or C<on_wtimeout> |
390 | $_[0]{on_timeout} = $_[1]; |
571 | callback, or disables the callback (but not the timeout) if C<$cb> = |
391 | } |
572 | C<undef>. See the C<timeout> constructor argument and method. |
|
|
573 | |
|
|
574 | =cut |
|
|
575 | |
|
|
576 | # see below |
392 | |
577 | |
393 | =item $handle->autocork ($boolean) |
578 | =item $handle->autocork ($boolean) |
394 | |
579 | |
395 | Enables or disables the current autocork behaviour (see C<autocork> |
580 | Enables or disables the current autocork behaviour (see C<autocork> |
396 | constructor argument). Changes will only take effect on the next write. |
581 | constructor argument). Changes will only take effect on the next write. |
… | |
… | |
411 | sub no_delay { |
596 | sub no_delay { |
412 | $_[0]{no_delay} = $_[1]; |
597 | $_[0]{no_delay} = $_[1]; |
413 | |
598 | |
414 | eval { |
599 | eval { |
415 | local $SIG{__DIE__}; |
600 | local $SIG{__DIE__}; |
416 | setsockopt $_[0]{fh}, &Socket::IPPROTO_TCP, &Socket::TCP_NODELAY, int $_[1]; |
601 | setsockopt $_[0]{fh}, &Socket::IPPROTO_TCP, &Socket::TCP_NODELAY, int $_[1] |
|
|
602 | if $_[0]{fh}; |
417 | }; |
603 | }; |
418 | } |
604 | } |
419 | |
605 | |
|
|
606 | =item $handle->on_starttls ($cb) |
|
|
607 | |
|
|
608 | Replace the current C<on_starttls> callback (see the C<on_starttls> constructor argument). |
|
|
609 | |
|
|
610 | =cut |
|
|
611 | |
|
|
612 | sub on_starttls { |
|
|
613 | $_[0]{on_starttls} = $_[1]; |
|
|
614 | } |
|
|
615 | |
|
|
616 | =item $handle->on_stoptls ($cb) |
|
|
617 | |
|
|
618 | Replace the current C<on_stoptls> callback (see the C<on_stoptls> constructor argument). |
|
|
619 | |
|
|
620 | =cut |
|
|
621 | |
|
|
622 | sub on_starttls { |
|
|
623 | $_[0]{on_stoptls} = $_[1]; |
|
|
624 | } |
|
|
625 | |
|
|
626 | =item $handle->rbuf_max ($max_octets) |
|
|
627 | |
|
|
628 | Configures the C<rbuf_max> setting (C<undef> disables it). |
|
|
629 | |
|
|
630 | =cut |
|
|
631 | |
|
|
632 | sub rbuf_max { |
|
|
633 | $_[0]{rbuf_max} = $_[1]; |
|
|
634 | } |
|
|
635 | |
420 | ############################################################################# |
636 | ############################################################################# |
421 | |
637 | |
422 | =item $handle->timeout ($seconds) |
638 | =item $handle->timeout ($seconds) |
423 | |
639 | |
|
|
640 | =item $handle->rtimeout ($seconds) |
|
|
641 | |
|
|
642 | =item $handle->wtimeout ($seconds) |
|
|
643 | |
424 | Configures (or disables) the inactivity timeout. |
644 | Configures (or disables) the inactivity timeout. |
425 | |
645 | |
426 | =cut |
646 | =item $handle->timeout_reset |
427 | |
647 | |
428 | sub timeout { |
648 | =item $handle->rtimeout_reset |
|
|
649 | |
|
|
650 | =item $handle->wtimeout_reset |
|
|
651 | |
|
|
652 | Reset the activity timeout, as if data was received or sent. |
|
|
653 | |
|
|
654 | These methods are cheap to call. |
|
|
655 | |
|
|
656 | =cut |
|
|
657 | |
|
|
658 | for my $dir ("", "r", "w") { |
|
|
659 | my $timeout = "${dir}timeout"; |
|
|
660 | my $tw = "_${dir}tw"; |
|
|
661 | my $on_timeout = "on_${dir}timeout"; |
|
|
662 | my $activity = "_${dir}activity"; |
|
|
663 | my $cb; |
|
|
664 | |
|
|
665 | *$on_timeout = sub { |
|
|
666 | $_[0]{$on_timeout} = $_[1]; |
|
|
667 | }; |
|
|
668 | |
|
|
669 | *$timeout = sub { |
429 | my ($self, $timeout) = @_; |
670 | my ($self, $new_value) = @_; |
430 | |
671 | |
431 | $self->{timeout} = $timeout; |
672 | $self->{$timeout} = $new_value; |
432 | $self->_timeout; |
673 | delete $self->{$tw}; &$cb; |
433 | } |
674 | }; |
434 | |
675 | |
|
|
676 | *{"${dir}timeout_reset"} = sub { |
|
|
677 | $_[0]{$activity} = AE::now; |
|
|
678 | }; |
|
|
679 | |
|
|
680 | # main workhorse: |
435 | # reset the timeout watcher, as neccessary |
681 | # reset the timeout watcher, as neccessary |
436 | # also check for time-outs |
682 | # also check for time-outs |
437 | sub _timeout { |
683 | $cb = sub { |
438 | my ($self) = @_; |
684 | my ($self) = @_; |
439 | |
685 | |
440 | if ($self->{timeout}) { |
686 | if ($self->{$timeout} && $self->{fh}) { |
441 | my $NOW = AnyEvent->now; |
687 | my $NOW = AE::now; |
442 | |
688 | |
443 | # when would the timeout trigger? |
689 | # when would the timeout trigger? |
444 | my $after = $self->{_activity} + $self->{timeout} - $NOW; |
690 | my $after = $self->{$activity} + $self->{$timeout} - $NOW; |
445 | |
691 | |
446 | # now or in the past already? |
692 | # now or in the past already? |
447 | if ($after <= 0) { |
693 | if ($after <= 0) { |
448 | $self->{_activity} = $NOW; |
694 | $self->{$activity} = $NOW; |
449 | |
695 | |
450 | if ($self->{on_timeout}) { |
696 | if ($self->{$on_timeout}) { |
451 | $self->{on_timeout}($self); |
697 | $self->{$on_timeout}($self); |
452 | } else { |
698 | } else { |
453 | $self->_error (&Errno::ETIMEDOUT); |
699 | $self->_error (Errno::ETIMEDOUT); |
|
|
700 | } |
|
|
701 | |
|
|
702 | # callback could have changed timeout value, optimise |
|
|
703 | return unless $self->{$timeout}; |
|
|
704 | |
|
|
705 | # calculate new after |
|
|
706 | $after = $self->{$timeout}; |
454 | } |
707 | } |
455 | |
708 | |
456 | # callback could have changed timeout value, optimise |
709 | Scalar::Util::weaken $self; |
457 | return unless $self->{timeout}; |
710 | return unless $self; # ->error could have destroyed $self |
458 | |
711 | |
459 | # calculate new after |
712 | $self->{$tw} ||= AE::timer $after, 0, sub { |
460 | $after = $self->{timeout}; |
713 | delete $self->{$tw}; |
|
|
714 | $cb->($self); |
|
|
715 | }; |
|
|
716 | } else { |
|
|
717 | delete $self->{$tw}; |
461 | } |
718 | } |
462 | |
|
|
463 | Scalar::Util::weaken $self; |
|
|
464 | return unless $self; # ->error could have destroyed $self |
|
|
465 | |
|
|
466 | $self->{_tw} ||= AnyEvent->timer (after => $after, cb => sub { |
|
|
467 | delete $self->{_tw}; |
|
|
468 | $self->_timeout; |
|
|
469 | }); |
|
|
470 | } else { |
|
|
471 | delete $self->{_tw}; |
|
|
472 | } |
719 | } |
473 | } |
720 | } |
474 | |
721 | |
475 | ############################################################################# |
722 | ############################################################################# |
476 | |
723 | |
… | |
… | |
521 | Scalar::Util::weaken $self; |
768 | Scalar::Util::weaken $self; |
522 | |
769 | |
523 | my $cb = sub { |
770 | my $cb = sub { |
524 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
771 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
525 | |
772 | |
526 | if ($len >= 0) { |
773 | if (defined $len) { |
527 | substr $self->{wbuf}, 0, $len, ""; |
774 | substr $self->{wbuf}, 0, $len, ""; |
528 | |
775 | |
529 | $self->{_activity} = AnyEvent->now; |
776 | $self->{_activity} = $self->{_wactivity} = AE::now; |
530 | |
777 | |
531 | $self->{on_drain}($self) |
778 | $self->{on_drain}($self) |
532 | if $self->{low_water_mark} >= (length $self->{wbuf}) + (length $self->{_tls_wbuf}) |
779 | if $self->{low_water_mark} >= (length $self->{wbuf}) + (length $self->{_tls_wbuf}) |
533 | && $self->{on_drain}; |
780 | && $self->{on_drain}; |
534 | |
781 | |
… | |
… | |
540 | |
787 | |
541 | # try to write data immediately |
788 | # try to write data immediately |
542 | $cb->() unless $self->{autocork}; |
789 | $cb->() unless $self->{autocork}; |
543 | |
790 | |
544 | # if still data left in wbuf, we need to poll |
791 | # if still data left in wbuf, we need to poll |
545 | $self->{_ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb) |
792 | $self->{_ww} = AE::io $self->{fh}, 1, $cb |
546 | if length $self->{wbuf}; |
793 | if length $self->{wbuf}; |
547 | }; |
794 | }; |
548 | } |
795 | } |
549 | |
796 | |
550 | our %WH; |
797 | our %WH; |
… | |
… | |
563 | ->($self, @_); |
810 | ->($self, @_); |
564 | } |
811 | } |
565 | |
812 | |
566 | if ($self->{tls}) { |
813 | if ($self->{tls}) { |
567 | $self->{_tls_wbuf} .= $_[0]; |
814 | $self->{_tls_wbuf} .= $_[0]; |
568 | |
815 | &_dotls ($self) if $self->{fh}; |
569 | &_dotls ($self); |
|
|
570 | } else { |
816 | } else { |
571 | $self->{wbuf} .= $_[0]; |
817 | $self->{wbuf} .= $_[0]; |
572 | $self->_drain_wbuf; |
818 | $self->_drain_wbuf if $self->{fh}; |
573 | } |
819 | } |
574 | } |
820 | } |
575 | |
821 | |
576 | =item $handle->push_write (type => @args) |
822 | =item $handle->push_write (type => @args) |
577 | |
823 | |
… | |
… | |
666 | |
912 | |
667 | pack "w/a*", Storable::nfreeze ($ref) |
913 | pack "w/a*", Storable::nfreeze ($ref) |
668 | }; |
914 | }; |
669 | |
915 | |
670 | =back |
916 | =back |
|
|
917 | |
|
|
918 | =item $handle->push_shutdown |
|
|
919 | |
|
|
920 | Sometimes you know you want to close the socket after writing your data |
|
|
921 | before it was actually written. One way to do that is to replace your |
|
|
922 | C<on_drain> handler by a callback that shuts down the socket (and set |
|
|
923 | C<low_water_mark> to C<0>). This method is a shorthand for just that, and |
|
|
924 | replaces the C<on_drain> callback with: |
|
|
925 | |
|
|
926 | sub { shutdown $_[0]{fh}, 1 } # for push_shutdown |
|
|
927 | |
|
|
928 | This simply shuts down the write side and signals an EOF condition to the |
|
|
929 | the peer. |
|
|
930 | |
|
|
931 | You can rely on the normal read queue and C<on_eof> handling |
|
|
932 | afterwards. This is the cleanest way to close a connection. |
|
|
933 | |
|
|
934 | =cut |
|
|
935 | |
|
|
936 | sub push_shutdown { |
|
|
937 | my ($self) = @_; |
|
|
938 | |
|
|
939 | delete $self->{low_water_mark}; |
|
|
940 | $self->on_drain (sub { shutdown $_[0]{fh}, 1 }); |
|
|
941 | } |
671 | |
942 | |
672 | =item AnyEvent::Handle::register_write_type type => $coderef->($handle, @args) |
943 | =item AnyEvent::Handle::register_write_type type => $coderef->($handle, @args) |
673 | |
944 | |
674 | This function (not method) lets you add your own types to C<push_write>. |
945 | This function (not method) lets you add your own types to C<push_write>. |
675 | Whenever the given C<type> is used, C<push_write> will invoke the code |
946 | Whenever the given C<type> is used, C<push_write> will invoke the code |
… | |
… | |
769 | =cut |
1040 | =cut |
770 | |
1041 | |
771 | sub _drain_rbuf { |
1042 | sub _drain_rbuf { |
772 | my ($self) = @_; |
1043 | my ($self) = @_; |
773 | |
1044 | |
|
|
1045 | # avoid recursion |
|
|
1046 | return if $self->{_skip_drain_rbuf}; |
774 | local $self->{_in_drain} = 1; |
1047 | local $self->{_skip_drain_rbuf} = 1; |
775 | |
|
|
776 | if ( |
|
|
777 | defined $self->{rbuf_max} |
|
|
778 | && $self->{rbuf_max} < length $self->{rbuf} |
|
|
779 | ) { |
|
|
780 | $self->_error (&Errno::ENOSPC, 1), return; |
|
|
781 | } |
|
|
782 | |
1048 | |
783 | while () { |
1049 | while () { |
784 | # we need to use a separate tls read buffer, as we must not receive data while |
1050 | # we need to use a separate tls read buffer, as we must not receive data while |
785 | # we are draining the buffer, and this can only happen with TLS. |
1051 | # we are draining the buffer, and this can only happen with TLS. |
786 | $self->{rbuf} .= delete $self->{_tls_rbuf} if exists $self->{_tls_rbuf}; |
1052 | $self->{rbuf} .= delete $self->{_tls_rbuf} |
|
|
1053 | if exists $self->{_tls_rbuf}; |
787 | |
1054 | |
788 | my $len = length $self->{rbuf}; |
1055 | my $len = length $self->{rbuf}; |
789 | |
1056 | |
790 | if (my $cb = shift @{ $self->{_queue} }) { |
1057 | if (my $cb = shift @{ $self->{_queue} }) { |
791 | unless ($cb->($self)) { |
1058 | unless ($cb->($self)) { |
792 | if ($self->{_eof}) { |
1059 | # no progress can be made |
793 | # no progress can be made (not enough data and no data forthcoming) |
1060 | # (not enough data and no data forthcoming) |
794 | $self->_error (&Errno::EPIPE, 1), return; |
1061 | $self->_error (Errno::EPIPE, 1), return |
795 | } |
1062 | if $self->{_eof}; |
796 | |
1063 | |
797 | unshift @{ $self->{_queue} }, $cb; |
1064 | unshift @{ $self->{_queue} }, $cb; |
798 | last; |
1065 | last; |
799 | } |
1066 | } |
800 | } elsif ($self->{on_read}) { |
1067 | } elsif ($self->{on_read}) { |
… | |
… | |
807 | && !@{ $self->{_queue} } # and the queue is still empty |
1074 | && !@{ $self->{_queue} } # and the queue is still empty |
808 | && $self->{on_read} # but we still have on_read |
1075 | && $self->{on_read} # but we still have on_read |
809 | ) { |
1076 | ) { |
810 | # no further data will arrive |
1077 | # no further data will arrive |
811 | # so no progress can be made |
1078 | # so no progress can be made |
812 | $self->_error (&Errno::EPIPE, 1), return |
1079 | $self->_error (Errno::EPIPE, 1), return |
813 | if $self->{_eof}; |
1080 | if $self->{_eof}; |
814 | |
1081 | |
815 | last; # more data might arrive |
1082 | last; # more data might arrive |
816 | } |
1083 | } |
817 | } else { |
1084 | } else { |
… | |
… | |
820 | last; |
1087 | last; |
821 | } |
1088 | } |
822 | } |
1089 | } |
823 | |
1090 | |
824 | if ($self->{_eof}) { |
1091 | if ($self->{_eof}) { |
825 | if ($self->{on_eof}) { |
1092 | $self->{on_eof} |
826 | $self->{on_eof}($self) |
1093 | ? $self->{on_eof}($self) |
827 | } else { |
1094 | : $self->_error (0, 1, "Unexpected end-of-file"); |
828 | $self->_error (0, 1); |
1095 | |
829 | } |
1096 | return; |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | if ( |
|
|
1100 | defined $self->{rbuf_max} |
|
|
1101 | && $self->{rbuf_max} < length $self->{rbuf} |
|
|
1102 | ) { |
|
|
1103 | $self->_error (Errno::ENOSPC, 1), return; |
830 | } |
1104 | } |
831 | |
1105 | |
832 | # may need to restart read watcher |
1106 | # may need to restart read watcher |
833 | unless ($self->{_rw}) { |
1107 | unless ($self->{_rw}) { |
834 | $self->start_read |
1108 | $self->start_read |
… | |
… | |
846 | |
1120 | |
847 | sub on_read { |
1121 | sub on_read { |
848 | my ($self, $cb) = @_; |
1122 | my ($self, $cb) = @_; |
849 | |
1123 | |
850 | $self->{on_read} = $cb; |
1124 | $self->{on_read} = $cb; |
851 | $self->_drain_rbuf if $cb && !$self->{_in_drain}; |
1125 | $self->_drain_rbuf if $cb; |
852 | } |
1126 | } |
853 | |
1127 | |
854 | =item $handle->rbuf |
1128 | =item $handle->rbuf |
855 | |
1129 | |
856 | Returns the read buffer (as a modifiable lvalue). |
1130 | Returns the read buffer (as a modifiable lvalue). |
… | |
… | |
908 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
1182 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
909 | ->($self, $cb, @_); |
1183 | ->($self, $cb, @_); |
910 | } |
1184 | } |
911 | |
1185 | |
912 | push @{ $self->{_queue} }, $cb; |
1186 | push @{ $self->{_queue} }, $cb; |
913 | $self->_drain_rbuf unless $self->{_in_drain}; |
1187 | $self->_drain_rbuf; |
914 | } |
1188 | } |
915 | |
1189 | |
916 | sub unshift_read { |
1190 | sub unshift_read { |
917 | my $self = shift; |
1191 | my $self = shift; |
918 | my $cb = pop; |
1192 | my $cb = pop; |
… | |
… | |
924 | ->($self, $cb, @_); |
1198 | ->($self, $cb, @_); |
925 | } |
1199 | } |
926 | |
1200 | |
927 | |
1201 | |
928 | unshift @{ $self->{_queue} }, $cb; |
1202 | unshift @{ $self->{_queue} }, $cb; |
929 | $self->_drain_rbuf unless $self->{_in_drain}; |
1203 | $self->_drain_rbuf; |
930 | } |
1204 | } |
931 | |
1205 | |
932 | =item $handle->push_read (type => @args, $cb) |
1206 | =item $handle->push_read (type => @args, $cb) |
933 | |
1207 | |
934 | =item $handle->unshift_read (type => @args, $cb) |
1208 | =item $handle->unshift_read (type => @args, $cb) |
… | |
… | |
1067 | return 1; |
1341 | return 1; |
1068 | } |
1342 | } |
1069 | |
1343 | |
1070 | # reject |
1344 | # reject |
1071 | if ($reject && $$rbuf =~ $reject) { |
1345 | if ($reject && $$rbuf =~ $reject) { |
1072 | $self->_error (&Errno::EBADMSG); |
1346 | $self->_error (Errno::EBADMSG); |
1073 | } |
1347 | } |
1074 | |
1348 | |
1075 | # skip |
1349 | # skip |
1076 | if ($skip && $$rbuf =~ $skip) { |
1350 | if ($skip && $$rbuf =~ $skip) { |
1077 | $data .= substr $$rbuf, 0, $+[0], ""; |
1351 | $data .= substr $$rbuf, 0, $+[0], ""; |
… | |
… | |
1093 | my ($self, $cb) = @_; |
1367 | my ($self, $cb) = @_; |
1094 | |
1368 | |
1095 | sub { |
1369 | sub { |
1096 | unless ($_[0]{rbuf} =~ s/^(0|[1-9][0-9]*)://) { |
1370 | unless ($_[0]{rbuf} =~ s/^(0|[1-9][0-9]*)://) { |
1097 | if ($_[0]{rbuf} =~ /[^0-9]/) { |
1371 | if ($_[0]{rbuf} =~ /[^0-9]/) { |
1098 | $self->_error (&Errno::EBADMSG); |
1372 | $self->_error (Errno::EBADMSG); |
1099 | } |
1373 | } |
1100 | return; |
1374 | return; |
1101 | } |
1375 | } |
1102 | |
1376 | |
1103 | my $len = $1; |
1377 | my $len = $1; |
… | |
… | |
1106 | my $string = $_[1]; |
1380 | my $string = $_[1]; |
1107 | $_[0]->unshift_read (chunk => 1, sub { |
1381 | $_[0]->unshift_read (chunk => 1, sub { |
1108 | if ($_[1] eq ",") { |
1382 | if ($_[1] eq ",") { |
1109 | $cb->($_[0], $string); |
1383 | $cb->($_[0], $string); |
1110 | } else { |
1384 | } else { |
1111 | $self->_error (&Errno::EBADMSG); |
1385 | $self->_error (Errno::EBADMSG); |
1112 | } |
1386 | } |
1113 | }); |
1387 | }); |
1114 | }); |
1388 | }); |
1115 | |
1389 | |
1116 | 1 |
1390 | 1 |
… | |
… | |
1183 | =cut |
1457 | =cut |
1184 | |
1458 | |
1185 | register_read_type json => sub { |
1459 | register_read_type json => sub { |
1186 | my ($self, $cb) = @_; |
1460 | my ($self, $cb) = @_; |
1187 | |
1461 | |
1188 | require JSON; |
1462 | my $json = $self->{json} ||= |
|
|
1463 | eval { require JSON::XS; JSON::XS->new->utf8 } |
|
|
1464 | || do { require JSON; JSON->new->utf8 }; |
1189 | |
1465 | |
1190 | my $data; |
1466 | my $data; |
1191 | my $rbuf = \$self->{rbuf}; |
1467 | my $rbuf = \$self->{rbuf}; |
1192 | |
|
|
1193 | my $json = $self->{json} ||= JSON->new->utf8; |
|
|
1194 | |
1468 | |
1195 | sub { |
1469 | sub { |
1196 | my $ref = eval { $json->incr_parse ($self->{rbuf}) }; |
1470 | my $ref = eval { $json->incr_parse ($self->{rbuf}) }; |
1197 | |
1471 | |
1198 | if ($ref) { |
1472 | if ($ref) { |
… | |
… | |
1206 | $json->incr_skip; |
1480 | $json->incr_skip; |
1207 | |
1481 | |
1208 | $self->{rbuf} = $json->incr_text; |
1482 | $self->{rbuf} = $json->incr_text; |
1209 | $json->incr_text = ""; |
1483 | $json->incr_text = ""; |
1210 | |
1484 | |
1211 | $self->_error (&Errno::EBADMSG); |
1485 | $self->_error (Errno::EBADMSG); |
1212 | |
1486 | |
1213 | () |
1487 | () |
1214 | } else { |
1488 | } else { |
1215 | $self->{rbuf} = ""; |
1489 | $self->{rbuf} = ""; |
1216 | |
1490 | |
… | |
… | |
1253 | # read remaining chunk |
1527 | # read remaining chunk |
1254 | $_[0]->unshift_read (chunk => $len, sub { |
1528 | $_[0]->unshift_read (chunk => $len, sub { |
1255 | if (my $ref = eval { Storable::thaw ($_[1]) }) { |
1529 | if (my $ref = eval { Storable::thaw ($_[1]) }) { |
1256 | $cb->($_[0], $ref); |
1530 | $cb->($_[0], $ref); |
1257 | } else { |
1531 | } else { |
1258 | $self->_error (&Errno::EBADMSG); |
1532 | $self->_error (Errno::EBADMSG); |
1259 | } |
1533 | } |
1260 | }); |
1534 | }); |
1261 | } |
1535 | } |
1262 | |
1536 | |
1263 | 1 |
1537 | 1 |
… | |
… | |
1315 | my ($self) = @_; |
1589 | my ($self) = @_; |
1316 | |
1590 | |
1317 | unless ($self->{_rw} || $self->{_eof}) { |
1591 | unless ($self->{_rw} || $self->{_eof}) { |
1318 | Scalar::Util::weaken $self; |
1592 | Scalar::Util::weaken $self; |
1319 | |
1593 | |
1320 | $self->{_rw} = AnyEvent->io (fh => $self->{fh}, poll => "r", cb => sub { |
1594 | $self->{_rw} = AE::io $self->{fh}, 0, sub { |
1321 | my $rbuf = \($self->{tls} ? my $buf : $self->{rbuf}); |
1595 | my $rbuf = \($self->{tls} ? my $buf : $self->{rbuf}); |
1322 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1596 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1323 | |
1597 | |
1324 | if ($len > 0) { |
1598 | if ($len > 0) { |
1325 | $self->{_activity} = AnyEvent->now; |
1599 | $self->{_activity} = $self->{_ractivity} = AE::now; |
1326 | |
1600 | |
1327 | if ($self->{tls}) { |
1601 | if ($self->{tls}) { |
1328 | Net::SSLeay::BIO_write ($self->{_rbio}, $$rbuf); |
1602 | Net::SSLeay::BIO_write ($self->{_rbio}, $$rbuf); |
1329 | |
1603 | |
1330 | &_dotls ($self); |
1604 | &_dotls ($self); |
1331 | } else { |
1605 | } else { |
1332 | $self->_drain_rbuf unless $self->{_in_drain}; |
1606 | $self->_drain_rbuf; |
1333 | } |
1607 | } |
1334 | |
1608 | |
1335 | } elsif (defined $len) { |
1609 | } elsif (defined $len) { |
1336 | delete $self->{_rw}; |
1610 | delete $self->{_rw}; |
1337 | $self->{_eof} = 1; |
1611 | $self->{_eof} = 1; |
1338 | $self->_drain_rbuf unless $self->{_in_drain}; |
1612 | $self->_drain_rbuf; |
1339 | |
1613 | |
1340 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1614 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1341 | return $self->_error ($!, 1); |
1615 | return $self->_error ($!, 1); |
1342 | } |
1616 | } |
1343 | }); |
1617 | }; |
|
|
1618 | } |
|
|
1619 | } |
|
|
1620 | |
|
|
1621 | our $ERROR_SYSCALL; |
|
|
1622 | our $ERROR_WANT_READ; |
|
|
1623 | |
|
|
1624 | sub _tls_error { |
|
|
1625 | my ($self, $err) = @_; |
|
|
1626 | |
|
|
1627 | return $self->_error ($!, 1) |
|
|
1628 | if $err == Net::SSLeay::ERROR_SYSCALL (); |
|
|
1629 | |
|
|
1630 | my $err =Net::SSLeay::ERR_error_string (Net::SSLeay::ERR_get_error ()); |
|
|
1631 | |
|
|
1632 | # reduce error string to look less scary |
|
|
1633 | $err =~ s/^error:[0-9a-fA-F]{8}:[^:]+:([^:]+):/\L$1: /; |
|
|
1634 | |
|
|
1635 | if ($self->{_on_starttls}) { |
|
|
1636 | (delete $self->{_on_starttls})->($self, undef, $err); |
|
|
1637 | &_freetls; |
|
|
1638 | } else { |
|
|
1639 | &_freetls; |
|
|
1640 | $self->_error (Errno::EPROTO, 1, $err); |
1344 | } |
1641 | } |
1345 | } |
1642 | } |
1346 | |
1643 | |
1347 | # poll the write BIO and send the data if applicable |
1644 | # poll the write BIO and send the data if applicable |
|
|
1645 | # also decode read data if possible |
|
|
1646 | # this is basiclaly our TLS state machine |
|
|
1647 | # more efficient implementations are possible with openssl, |
|
|
1648 | # but not with the buggy and incomplete Net::SSLeay. |
1348 | sub _dotls { |
1649 | sub _dotls { |
1349 | my ($self) = @_; |
1650 | my ($self) = @_; |
1350 | |
1651 | |
1351 | my $tmp; |
1652 | my $tmp; |
1352 | |
1653 | |
1353 | if (length $self->{_tls_wbuf}) { |
1654 | if (length $self->{_tls_wbuf}) { |
1354 | while (($tmp = Net::SSLeay::write ($self->{tls}, $self->{_tls_wbuf})) > 0) { |
1655 | while (($tmp = Net::SSLeay::write ($self->{tls}, $self->{_tls_wbuf})) > 0) { |
1355 | substr $self->{_tls_wbuf}, 0, $tmp, ""; |
1656 | substr $self->{_tls_wbuf}, 0, $tmp, ""; |
1356 | } |
1657 | } |
|
|
1658 | |
|
|
1659 | $tmp = Net::SSLeay::get_error ($self->{tls}, $tmp); |
|
|
1660 | return $self->_tls_error ($tmp) |
|
|
1661 | if $tmp != $ERROR_WANT_READ |
|
|
1662 | && ($tmp != $ERROR_SYSCALL || $!); |
1357 | } |
1663 | } |
1358 | |
1664 | |
1359 | while (defined ($tmp = Net::SSLeay::read ($self->{tls}))) { |
1665 | while (defined ($tmp = Net::SSLeay::read ($self->{tls}))) { |
1360 | unless (length $tmp) { |
1666 | unless (length $tmp) { |
1361 | # let's treat SSL-eof as we treat normal EOF |
1667 | $self->{_on_starttls} |
1362 | delete $self->{_rw}; |
1668 | and (delete $self->{_on_starttls})->($self, undef, "EOF during handshake"); # ??? |
1363 | $self->{_eof} = 1; |
|
|
1364 | &_freetls; |
1669 | &_freetls; |
|
|
1670 | |
|
|
1671 | if ($self->{on_stoptls}) { |
|
|
1672 | $self->{on_stoptls}($self); |
|
|
1673 | return; |
|
|
1674 | } else { |
|
|
1675 | # let's treat SSL-eof as we treat normal EOF |
|
|
1676 | delete $self->{_rw}; |
|
|
1677 | $self->{_eof} = 1; |
|
|
1678 | } |
1365 | } |
1679 | } |
1366 | |
1680 | |
1367 | $self->{_tls_rbuf} .= $tmp; |
1681 | $self->{_tls_rbuf} .= $tmp; |
1368 | $self->_drain_rbuf unless $self->{_in_drain}; |
1682 | $self->_drain_rbuf; |
1369 | $self->{tls} or return; # tls session might have gone away in callback |
1683 | $self->{tls} or return; # tls session might have gone away in callback |
1370 | } |
1684 | } |
1371 | |
1685 | |
1372 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
1686 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
1373 | |
|
|
1374 | if ($tmp != Net::SSLeay::ERROR_WANT_READ ()) { |
|
|
1375 | if ($tmp == Net::SSLeay::ERROR_SYSCALL ()) { |
|
|
1376 | return $self->_error ($!, 1); |
1687 | return $self->_tls_error ($tmp) |
1377 | } elsif ($tmp == Net::SSLeay::ERROR_SSL ()) { |
1688 | if $tmp != $ERROR_WANT_READ |
1378 | return $self->_error (&Errno::EIO, 1); |
1689 | && ($tmp != $ERROR_SYSCALL || $!); |
1379 | } |
|
|
1380 | |
|
|
1381 | # all other errors are fine for our purposes |
|
|
1382 | } |
|
|
1383 | |
1690 | |
1384 | while (length ($tmp = Net::SSLeay::BIO_read ($self->{_wbio}))) { |
1691 | while (length ($tmp = Net::SSLeay::BIO_read ($self->{_wbio}))) { |
1385 | $self->{wbuf} .= $tmp; |
1692 | $self->{wbuf} .= $tmp; |
1386 | $self->_drain_wbuf; |
1693 | $self->_drain_wbuf; |
1387 | } |
1694 | } |
|
|
1695 | |
|
|
1696 | $self->{_on_starttls} |
|
|
1697 | and Net::SSLeay::state ($self->{tls}) == Net::SSLeay::ST_OK () |
|
|
1698 | and (delete $self->{_on_starttls})->($self, 1, "TLS/SSL connection established"); |
1388 | } |
1699 | } |
1389 | |
1700 | |
1390 | =item $handle->starttls ($tls[, $tls_ctx]) |
1701 | =item $handle->starttls ($tls[, $tls_ctx]) |
1391 | |
1702 | |
1392 | Instead of starting TLS negotiation immediately when the AnyEvent::Handle |
1703 | Instead of starting TLS negotiation immediately when the AnyEvent::Handle |
1393 | object is created, you can also do that at a later time by calling |
1704 | object is created, you can also do that at a later time by calling |
1394 | C<starttls>. |
1705 | C<starttls>. |
|
|
1706 | |
|
|
1707 | Starting TLS is currently an asynchronous operation - when you push some |
|
|
1708 | write data and then call C<< ->starttls >> then TLS negotiation will start |
|
|
1709 | immediately, after which the queued write data is then sent. |
1395 | |
1710 | |
1396 | The first argument is the same as the C<tls> constructor argument (either |
1711 | The first argument is the same as the C<tls> constructor argument (either |
1397 | C<"connect">, C<"accept"> or an existing Net::SSLeay object). |
1712 | C<"connect">, C<"accept"> or an existing Net::SSLeay object). |
1398 | |
1713 | |
1399 | The second argument is the optional C<AnyEvent::TLS> object that is used |
1714 | The second argument is the optional C<AnyEvent::TLS> object that is used |
… | |
… | |
1404 | The TLS connection object will end up in C<< $handle->{tls} >>, the TLS |
1719 | The TLS connection object will end up in C<< $handle->{tls} >>, the TLS |
1405 | context in C<< $handle->{tls_ctx} >> after this call and can be used or |
1720 | context in C<< $handle->{tls_ctx} >> after this call and can be used or |
1406 | changed to your liking. Note that the handshake might have already started |
1721 | changed to your liking. Note that the handshake might have already started |
1407 | when this function returns. |
1722 | when this function returns. |
1408 | |
1723 | |
1409 | If it an error to start a TLS handshake more than once per |
1724 | Due to bugs in OpenSSL, it might or might not be possible to do multiple |
1410 | AnyEvent::Handle object (this is due to bugs in OpenSSL). |
1725 | handshakes on the same stream. Best do not attempt to use the stream after |
|
|
1726 | stopping TLS. |
1411 | |
1727 | |
1412 | =cut |
1728 | =cut |
|
|
1729 | |
|
|
1730 | our %TLS_CACHE; #TODO not yet documented, should we? |
1413 | |
1731 | |
1414 | sub starttls { |
1732 | sub starttls { |
1415 | my ($self, $ssl, $ctx) = @_; |
1733 | my ($self, $tls, $ctx) = @_; |
|
|
1734 | |
|
|
1735 | Carp::croak "It is an error to call starttls on an AnyEvent::Handle object while TLS is already active, caught" |
|
|
1736 | if $self->{tls}; |
|
|
1737 | |
|
|
1738 | $self->{tls} = $tls; |
|
|
1739 | $self->{tls_ctx} = $ctx if @_ > 2; |
|
|
1740 | |
|
|
1741 | return unless $self->{fh}; |
1416 | |
1742 | |
1417 | require Net::SSLeay; |
1743 | require Net::SSLeay; |
1418 | |
1744 | |
1419 | Carp::croak "it is an error to call starttls more than once on an AnyEvent::Handle object" |
1745 | $ERROR_SYSCALL = Net::SSLeay::ERROR_SYSCALL (); |
|
|
1746 | $ERROR_WANT_READ = Net::SSLeay::ERROR_WANT_READ (); |
|
|
1747 | |
1420 | if $self->{tls}; |
1748 | $tls = $self->{tls}; |
1421 | |
|
|
1422 | $ctx ||= $self->{tls_ctx}; |
1749 | $ctx = $self->{tls_ctx}; |
|
|
1750 | |
|
|
1751 | local $Carp::CarpLevel = 1; # skip ourselves when creating a new context or session |
1423 | |
1752 | |
1424 | if ("HASH" eq ref $ctx) { |
1753 | if ("HASH" eq ref $ctx) { |
1425 | require AnyEvent::TLS; |
1754 | require AnyEvent::TLS; |
1426 | |
1755 | |
1427 | local $Carp::CarpLevel = 1; # skip ourselves when creating a new context |
1756 | if ($ctx->{cache}) { |
|
|
1757 | my $key = $ctx+0; |
|
|
1758 | $ctx = $TLS_CACHE{$key} ||= new AnyEvent::TLS %$ctx; |
|
|
1759 | } else { |
1428 | $ctx = new AnyEvent::TLS %$ctx; |
1760 | $ctx = new AnyEvent::TLS %$ctx; |
|
|
1761 | } |
1429 | } |
1762 | } |
1430 | |
1763 | |
1431 | $self->{tls_ctx} = $ctx || TLS_CTX (); |
1764 | $self->{tls_ctx} = $ctx || TLS_CTX (); |
1432 | $self->{tls} = $ssl = $self->{tls_ctx}->_get_session ($ssl, $self); |
1765 | $self->{tls} = $tls = $self->{tls_ctx}->_get_session ($tls, $self, $self->{peername}); |
1433 | |
1766 | |
1434 | # basically, this is deep magic (because SSL_read should have the same issues) |
1767 | # basically, this is deep magic (because SSL_read should have the same issues) |
1435 | # but the openssl maintainers basically said: "trust us, it just works". |
1768 | # but the openssl maintainers basically said: "trust us, it just works". |
1436 | # (unfortunately, we have to hardcode constants because the abysmally misdesigned |
1769 | # (unfortunately, we have to hardcode constants because the abysmally misdesigned |
1437 | # and mismaintained ssleay-module doesn't even offer them). |
1770 | # and mismaintained ssleay-module doesn't even offer them). |
… | |
… | |
1444 | # and we drive openssl fully in blocking mode here. Or maybe we don't - openssl seems to |
1777 | # and we drive openssl fully in blocking mode here. Or maybe we don't - openssl seems to |
1445 | # have identity issues in that area. |
1778 | # have identity issues in that area. |
1446 | # Net::SSLeay::CTX_set_mode ($ssl, |
1779 | # Net::SSLeay::CTX_set_mode ($ssl, |
1447 | # (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
1780 | # (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
1448 | # | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
1781 | # | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
1449 | Net::SSLeay::CTX_set_mode ($ssl, 1|2); |
1782 | Net::SSLeay::CTX_set_mode ($tls, 1|2); |
1450 | |
1783 | |
1451 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1784 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1452 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1785 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1453 | |
1786 | |
|
|
1787 | Net::SSLeay::BIO_write ($self->{_rbio}, delete $self->{rbuf}); |
|
|
1788 | |
1454 | Net::SSLeay::set_bio ($ssl, $self->{_rbio}, $self->{_wbio}); |
1789 | Net::SSLeay::set_bio ($tls, $self->{_rbio}, $self->{_wbio}); |
|
|
1790 | |
|
|
1791 | $self->{_on_starttls} = sub { $_[0]{on_starttls}(@_) } |
|
|
1792 | if $self->{on_starttls}; |
1455 | |
1793 | |
1456 | &_dotls; # need to trigger the initial handshake |
1794 | &_dotls; # need to trigger the initial handshake |
1457 | $self->start_read; # make sure we actually do read |
1795 | $self->start_read; # make sure we actually do read |
1458 | } |
1796 | } |
1459 | |
1797 | |
1460 | =item $handle->stoptls |
1798 | =item $handle->stoptls |
1461 | |
1799 | |
1462 | Shuts down the SSL connection - this makes a proper EOF handshake by |
1800 | Shuts down the SSL connection - this makes a proper EOF handshake by |
1463 | sending a close notify to the other side, but since OpenSSL doesn't |
1801 | sending a close notify to the other side, but since OpenSSL doesn't |
1464 | support non-blocking shut downs, it is not possible to re-use the stream |
1802 | support non-blocking shut downs, it is not guarenteed that you can re-use |
1465 | afterwards. |
1803 | the stream afterwards. |
1466 | |
1804 | |
1467 | =cut |
1805 | =cut |
1468 | |
1806 | |
1469 | sub stoptls { |
1807 | sub stoptls { |
1470 | my ($self) = @_; |
1808 | my ($self) = @_; |
… | |
… | |
1472 | if ($self->{tls}) { |
1810 | if ($self->{tls}) { |
1473 | Net::SSLeay::shutdown ($self->{tls}); |
1811 | Net::SSLeay::shutdown ($self->{tls}); |
1474 | |
1812 | |
1475 | &_dotls; |
1813 | &_dotls; |
1476 | |
1814 | |
1477 | # we don't give a shit. no, we do, but we can't. no... |
1815 | # # we don't give a shit. no, we do, but we can't. no...#d# |
1478 | # we, we... have to use openssl :/ |
1816 | # # we, we... have to use openssl :/#d# |
1479 | &_freetls; |
1817 | # &_freetls;#d# |
1480 | } |
1818 | } |
1481 | } |
1819 | } |
1482 | |
1820 | |
1483 | sub _freetls { |
1821 | sub _freetls { |
1484 | my ($self) = @_; |
1822 | my ($self) = @_; |
1485 | |
1823 | |
1486 | return unless $self->{tls}; |
1824 | return unless $self->{tls}; |
1487 | |
1825 | |
1488 | $self->{tls_ctx}->_put_session (delete $self->{tls}); |
1826 | $self->{tls_ctx}->_put_session (delete $self->{tls}) |
|
|
1827 | if $self->{tls} > 0; |
1489 | |
1828 | |
1490 | delete @$self{qw(_rbio _wbio _tls_wbuf)}; |
1829 | delete @$self{qw(_rbio _wbio _tls_wbuf _on_starttls)}; |
1491 | } |
1830 | } |
1492 | |
1831 | |
1493 | sub DESTROY { |
1832 | sub DESTROY { |
1494 | my ($self) = @_; |
1833 | my ($self) = @_; |
1495 | |
1834 | |
1496 | &_freetls; |
1835 | &_freetls; |
1497 | |
1836 | |
1498 | my $linger = exists $self->{linger} ? $self->{linger} : 3600; |
1837 | my $linger = exists $self->{linger} ? $self->{linger} : 3600; |
1499 | |
1838 | |
1500 | if ($linger && length $self->{wbuf}) { |
1839 | if ($linger && length $self->{wbuf} && $self->{fh}) { |
1501 | my $fh = delete $self->{fh}; |
1840 | my $fh = delete $self->{fh}; |
1502 | my $wbuf = delete $self->{wbuf}; |
1841 | my $wbuf = delete $self->{wbuf}; |
1503 | |
1842 | |
1504 | my @linger; |
1843 | my @linger; |
1505 | |
1844 | |
1506 | push @linger, AnyEvent->io (fh => $fh, poll => "w", cb => sub { |
1845 | push @linger, AE::io $fh, 1, sub { |
1507 | my $len = syswrite $fh, $wbuf, length $wbuf; |
1846 | my $len = syswrite $fh, $wbuf, length $wbuf; |
1508 | |
1847 | |
1509 | if ($len > 0) { |
1848 | if ($len > 0) { |
1510 | substr $wbuf, 0, $len, ""; |
1849 | substr $wbuf, 0, $len, ""; |
1511 | } else { |
1850 | } else { |
1512 | @linger = (); # end |
1851 | @linger = (); # end |
1513 | } |
1852 | } |
1514 | }); |
1853 | }; |
1515 | push @linger, AnyEvent->timer (after => $linger, cb => sub { |
1854 | push @linger, AE::timer $linger, 0, sub { |
1516 | @linger = (); |
1855 | @linger = (); |
1517 | }); |
1856 | }; |
1518 | } |
1857 | } |
1519 | } |
1858 | } |
1520 | |
1859 | |
1521 | =item $handle->destroy |
1860 | =item $handle->destroy |
1522 | |
1861 | |
1523 | Shuts down the handle object as much as possible - this call ensures that |
1862 | Shuts down the handle object as much as possible - this call ensures that |
1524 | no further callbacks will be invoked and resources will be freed as much |
1863 | no further callbacks will be invoked and as many resources as possible |
1525 | as possible. You must not call any methods on the object afterwards. |
1864 | will be freed. Any method you will call on the handle object after |
|
|
1865 | destroying it in this way will be silently ignored (and it will return the |
|
|
1866 | empty list). |
1526 | |
1867 | |
1527 | Normally, you can just "forget" any references to an AnyEvent::Handle |
1868 | Normally, you can just "forget" any references to an AnyEvent::Handle |
1528 | object and it will simply shut down. This works in fatal error and EOF |
1869 | object and it will simply shut down. This works in fatal error and EOF |
1529 | callbacks, as well as code outside. It does I<NOT> work in a read or write |
1870 | callbacks, as well as code outside. It does I<NOT> work in a read or write |
1530 | callback, so when you want to destroy the AnyEvent::Handle object from |
1871 | callback, so when you want to destroy the AnyEvent::Handle object from |
1531 | within such an callback. You I<MUST> call C<< ->destroy >> explicitly in |
1872 | within such an callback. You I<MUST> call C<< ->destroy >> explicitly in |
1532 | that case. |
1873 | that case. |
1533 | |
1874 | |
|
|
1875 | Destroying the handle object in this way has the advantage that callbacks |
|
|
1876 | will be removed as well, so if those are the only reference holders (as |
|
|
1877 | is common), then one doesn't need to do anything special to break any |
|
|
1878 | reference cycles. |
|
|
1879 | |
1534 | The handle might still linger in the background and write out remaining |
1880 | The handle might still linger in the background and write out remaining |
1535 | data, as specified by the C<linger> option, however. |
1881 | data, as specified by the C<linger> option, however. |
1536 | |
1882 | |
1537 | =cut |
1883 | =cut |
1538 | |
1884 | |
1539 | sub destroy { |
1885 | sub destroy { |
1540 | my ($self) = @_; |
1886 | my ($self) = @_; |
1541 | |
1887 | |
1542 | $self->DESTROY; |
1888 | $self->DESTROY; |
1543 | %$self = (); |
1889 | %$self = (); |
|
|
1890 | bless $self, "AnyEvent::Handle::destroyed"; |
|
|
1891 | } |
|
|
1892 | |
|
|
1893 | sub AnyEvent::Handle::destroyed::AUTOLOAD { |
|
|
1894 | #nop |
1544 | } |
1895 | } |
1545 | |
1896 | |
1546 | =item AnyEvent::Handle::TLS_CTX |
1897 | =item AnyEvent::Handle::TLS_CTX |
1547 | |
1898 | |
1548 | This function creates and returns the AnyEvent::TLS object used by default |
1899 | This function creates and returns the AnyEvent::TLS object used by default |
… | |
… | |
1605 | |
1956 | |
1606 | $handle->on_read (sub { }); |
1957 | $handle->on_read (sub { }); |
1607 | $handle->on_eof (undef); |
1958 | $handle->on_eof (undef); |
1608 | $handle->on_error (sub { |
1959 | $handle->on_error (sub { |
1609 | my $data = delete $_[0]{rbuf}; |
1960 | my $data = delete $_[0]{rbuf}; |
1610 | undef $handle; |
|
|
1611 | }); |
1961 | }); |
1612 | |
1962 | |
1613 | The reason to use C<on_error> is that TCP connections, due to latencies |
1963 | The reason to use C<on_error> is that TCP connections, due to latencies |
1614 | and packets loss, might get closed quite violently with an error, when in |
1964 | and packets loss, might get closed quite violently with an error, when in |
1615 | fact, all data has been received. |
1965 | fact, all data has been received. |
… | |
… | |
1631 | $handle->on_drain (sub { |
1981 | $handle->on_drain (sub { |
1632 | warn "all data submitted to the kernel\n"; |
1982 | warn "all data submitted to the kernel\n"; |
1633 | undef $handle; |
1983 | undef $handle; |
1634 | }); |
1984 | }); |
1635 | |
1985 | |
|
|
1986 | If you just want to queue some data and then signal EOF to the other side, |
|
|
1987 | consider using C<< ->push_shutdown >> instead. |
|
|
1988 | |
|
|
1989 | =item I want to contact a TLS/SSL server, I don't care about security. |
|
|
1990 | |
|
|
1991 | If your TLS server is a pure TLS server (e.g. HTTPS) that only speaks TLS, |
|
|
1992 | simply connect to it and then create the AnyEvent::Handle with the C<tls> |
|
|
1993 | parameter: |
|
|
1994 | |
|
|
1995 | tcp_connect $host, $port, sub { |
|
|
1996 | my ($fh) = @_; |
|
|
1997 | |
|
|
1998 | my $handle = new AnyEvent::Handle |
|
|
1999 | fh => $fh, |
|
|
2000 | tls => "connect", |
|
|
2001 | on_error => sub { ... }; |
|
|
2002 | |
|
|
2003 | $handle->push_write (...); |
|
|
2004 | }; |
|
|
2005 | |
|
|
2006 | =item I want to contact a TLS/SSL server, I do care about security. |
|
|
2007 | |
|
|
2008 | Then you should additionally enable certificate verification, including |
|
|
2009 | peername verification, if the protocol you use supports it (see |
|
|
2010 | L<AnyEvent::TLS>, C<verify_peername>). |
|
|
2011 | |
|
|
2012 | E.g. for HTTPS: |
|
|
2013 | |
|
|
2014 | tcp_connect $host, $port, sub { |
|
|
2015 | my ($fh) = @_; |
|
|
2016 | |
|
|
2017 | my $handle = new AnyEvent::Handle |
|
|
2018 | fh => $fh, |
|
|
2019 | peername => $host, |
|
|
2020 | tls => "connect", |
|
|
2021 | tls_ctx => { verify => 1, verify_peername => "https" }, |
|
|
2022 | ... |
|
|
2023 | |
|
|
2024 | Note that you must specify the hostname you connected to (or whatever |
|
|
2025 | "peername" the protocol needs) as the C<peername> argument, otherwise no |
|
|
2026 | peername verification will be done. |
|
|
2027 | |
|
|
2028 | The above will use the system-dependent default set of trusted CA |
|
|
2029 | certificates. If you want to check against a specific CA, add the |
|
|
2030 | C<ca_file> (or C<ca_cert>) arguments to C<tls_ctx>: |
|
|
2031 | |
|
|
2032 | tls_ctx => { |
|
|
2033 | verify => 1, |
|
|
2034 | verify_peername => "https", |
|
|
2035 | ca_file => "my-ca-cert.pem", |
|
|
2036 | }, |
|
|
2037 | |
|
|
2038 | =item I want to create a TLS/SSL server, how do I do that? |
|
|
2039 | |
|
|
2040 | Well, you first need to get a server certificate and key. You have |
|
|
2041 | three options: a) ask a CA (buy one, use cacert.org etc.) b) create a |
|
|
2042 | self-signed certificate (cheap. check the search engine of your choice, |
|
|
2043 | there are many tutorials on the net) or c) make your own CA (tinyca2 is a |
|
|
2044 | nice program for that purpose). |
|
|
2045 | |
|
|
2046 | Then create a file with your private key (in PEM format, see |
|
|
2047 | L<AnyEvent::TLS>), followed by the certificate (also in PEM format). The |
|
|
2048 | file should then look like this: |
|
|
2049 | |
|
|
2050 | -----BEGIN RSA PRIVATE KEY----- |
|
|
2051 | ...header data |
|
|
2052 | ... lots of base64'y-stuff |
|
|
2053 | -----END RSA PRIVATE KEY----- |
|
|
2054 | |
|
|
2055 | -----BEGIN CERTIFICATE----- |
|
|
2056 | ... lots of base64'y-stuff |
|
|
2057 | -----END CERTIFICATE----- |
|
|
2058 | |
|
|
2059 | The important bits are the "PRIVATE KEY" and "CERTIFICATE" parts. Then |
|
|
2060 | specify this file as C<cert_file>: |
|
|
2061 | |
|
|
2062 | tcp_server undef, $port, sub { |
|
|
2063 | my ($fh) = @_; |
|
|
2064 | |
|
|
2065 | my $handle = new AnyEvent::Handle |
|
|
2066 | fh => $fh, |
|
|
2067 | tls => "accept", |
|
|
2068 | tls_ctx => { cert_file => "my-server-keycert.pem" }, |
|
|
2069 | ... |
|
|
2070 | |
|
|
2071 | When you have intermediate CA certificates that your clients might not |
|
|
2072 | know about, just append them to the C<cert_file>. |
|
|
2073 | |
1636 | =back |
2074 | =back |
1637 | |
2075 | |
1638 | |
2076 | |
1639 | =head1 SUBCLASSING AnyEvent::Handle |
2077 | =head1 SUBCLASSING AnyEvent::Handle |
1640 | |
2078 | |