1 | package AnyEvent::Handle; |
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2 | |
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3 | use Scalar::Util (); |
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4 | use Carp (); |
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5 | use Errno qw(EAGAIN EINTR); |
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6 | |
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7 | use AnyEvent (); BEGIN { AnyEvent::common_sense } |
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8 | use AnyEvent::Util qw(WSAEWOULDBLOCK); |
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9 | |
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10 | =head1 NAME |
1 | =head1 NAME |
11 | |
2 | |
12 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
3 | AnyEvent::Handle - non-blocking I/O on file handles via AnyEvent |
13 | |
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14 | =cut |
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15 | |
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16 | our $VERSION = 4.86; |
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17 | |
4 | |
18 | =head1 SYNOPSIS |
5 | =head1 SYNOPSIS |
19 | |
6 | |
20 | use AnyEvent; |
7 | use AnyEvent; |
21 | use AnyEvent::Handle; |
8 | use AnyEvent::Handle; |
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44 | $cv->recv; |
31 | $cv->recv; |
45 | |
32 | |
46 | =head1 DESCRIPTION |
33 | =head1 DESCRIPTION |
47 | |
34 | |
48 | 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 |
49 | filehandles. For utility functions for doing non-blocking connects and accepts |
36 | filehandles. |
50 | on sockets see L<AnyEvent::Util>. |
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51 | |
37 | |
52 | The L<AnyEvent::Intro> tutorial contains some well-documented |
38 | The L<AnyEvent::Intro> tutorial contains some well-documented |
53 | AnyEvent::Handle examples. |
39 | AnyEvent::Handle examples. |
54 | |
40 | |
55 | 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 |
56 | 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 |
57 | treatment of characters applies to this module as well. |
43 | treatment of characters applies to this module as well. |
58 | |
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 | |
59 | 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 |
60 | argument. |
49 | argument. |
61 | |
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 | |
62 | =head1 METHODS |
65 | =head1 METHODS |
63 | |
66 | |
64 | =over 4 |
67 | =over 4 |
65 | |
68 | |
66 | =item $handle = B<new> AnyEvent::TLS fh => $filehandle, key => value... |
69 | =item $handle = B<new> AnyEvent::TLS fh => $filehandle, key => value... |
67 | |
70 | |
68 | The constructor supports these arguments (all as C<< key => value >> pairs). |
71 | The constructor supports these arguments (all as C<< key => value >> pairs). |
69 | |
72 | |
70 | =over 4 |
73 | =over 4 |
71 | |
74 | |
72 | =item fh => $filehandle [MANDATORY] |
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73 | |
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74 | #=item fh => $filehandle [C<fh> or C<connect> MANDATORY] |
75 | =item fh => $filehandle [C<fh> or C<connect> MANDATORY] |
75 | |
76 | |
76 | The filehandle this L<AnyEvent::Handle> object will operate on. |
77 | The filehandle this L<AnyEvent::Handle> object will operate on. |
77 | NOTE: The filehandle will be set to non-blocking mode (using |
78 | NOTE: The filehandle will be set to non-blocking mode (using |
78 | C<AnyEvent::Util::fh_nonblocking>) by the constructor and needs to stay in |
79 | C<AnyEvent::Util::fh_nonblocking>) by the constructor and needs to stay in |
79 | that mode. |
80 | that mode. |
80 | |
81 | |
81 | #=item connect => [$host, $service] |
82 | =item connect => [$host, $service] [C<fh> or C<connect> MANDATORY] |
82 | # |
83 | |
83 | # You have to specify either this parameter, or C<connect>, below. |
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84 | #Try to connect to the specified host and service (port), using |
84 | Try to connect to the specified host and service (port), using |
85 | #C<AnyEvent::Socket::tcp_connect>. |
85 | C<AnyEvent::Socket::tcp_connect>. The C<$host> additionally becomes the |
86 | # |
86 | default C<peername>. |
87 | #When this |
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. |
88 | |
190 | |
89 | =item on_eof => $cb->($handle) |
191 | =item on_eof => $cb->($handle) |
90 | |
192 | |
91 | 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, |
92 | 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 |
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100 | down. |
202 | down. |
101 | |
203 | |
102 | 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 |
103 | 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>. |
104 | |
206 | |
105 | =item on_error => $cb->($handle, $fatal, $message) |
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106 | |
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107 | This is the error callback, which is called when, well, some error |
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108 | occured, such as not being able to resolve the hostname, failure to |
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109 | connect or a read error. |
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110 | |
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111 | Some errors are fatal (which is indicated by C<$fatal> being true). On |
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112 | fatal errors the handle object will be destroyed (by a call to C<< -> |
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113 | destroy >>) after invoking the error callback (which means you are free to |
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114 | examine the handle object). Examples of fatal errors are an EOF condition |
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115 | with active (but unsatisifable) read watchers (C<EPIPE>) or I/O errors. |
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116 | |
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117 | AnyEvent::Handle tries to find an appropriate error code for you to check |
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118 | against, but in some cases (TLS errors), this does not work well. It is |
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119 | recommended to always output the C<$message> argument in human-readable |
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120 | error messages (it's usually the same as C<"$!">). |
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121 | |
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122 | Non-fatal errors can be retried by simply returning, but it is recommended |
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123 | to simply ignore this parameter and instead abondon the handle object |
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124 | when this callback is invoked. Examples of non-fatal errors are timeouts |
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125 | C<ETIMEDOUT>) or badly-formatted data (C<EBADMSG>). |
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126 | |
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127 | On callback entrance, the value of C<$!> contains the operating system |
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128 | error code (or C<ENOSPC>, C<EPIPE>, C<ETIMEDOUT>, C<EBADMSG> or |
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129 | C<EPROTO>). |
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130 | |
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131 | While not mandatory, it is I<highly> recommended to set this callback, as |
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132 | you will not be notified of errors otherwise. The default simply calls |
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133 | C<croak>. |
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134 | |
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135 | =item on_read => $cb->($handle) |
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136 | |
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137 | This sets the default read callback, which is called when data arrives |
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138 | and no read request is in the queue (unlike read queue callbacks, this |
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139 | callback will only be called when at least one octet of data is in the |
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140 | read buffer). |
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141 | |
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142 | To access (and remove data from) the read buffer, use the C<< ->rbuf >> |
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143 | method or access the C<< $handle->{rbuf} >> member directly. Note that you |
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144 | must not enlarge or modify the read buffer, you can only remove data at |
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145 | the beginning from it. |
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146 | |
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147 | When an EOF condition is detected then AnyEvent::Handle will first try to |
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148 | feed all the remaining data to the queued callbacks and C<on_read> before |
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149 | calling the C<on_eof> callback. If no progress can be made, then a fatal |
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150 | error will be raised (with C<$!> set to C<EPIPE>). |
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151 | |
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152 | Note that, unlike requests in the read queue, an C<on_read> callback |
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153 | doesn't mean you I<require> some data: if there is an EOF and there |
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154 | are outstanding read requests then an error will be flagged. With an |
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155 | C<on_read> callback, the C<on_eof> callback will be invoked. |
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156 | |
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157 | =item on_drain => $cb->($handle) |
207 | =item on_drain => $cb->($handle) |
158 | |
208 | |
159 | 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 |
160 | (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). |
161 | |
211 | |
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167 | 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 |
168 | the file when the write queue becomes empty. |
218 | the file when the write queue becomes empty. |
169 | |
219 | |
170 | =item timeout => $fractional_seconds |
220 | =item timeout => $fractional_seconds |
171 | |
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 | |
172 | If non-zero, then this enables an "inactivity" timeout: whenever this many |
226 | If non-zero, then these enables an "inactivity" timeout: whenever this |
173 | 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 |
174 | 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 |
175 | 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>. |
176 | |
237 | |
177 | 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 |
178 | 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 |
179 | 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 |
180 | 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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359 | |
420 | |
360 | sub new { |
421 | sub new { |
361 | my $class = shift; |
422 | my $class = shift; |
362 | my $self = bless { @_ }, $class; |
423 | my $self = bless { @_ }, $class; |
363 | |
424 | |
364 | $self->{fh} or Carp::croak "mandatory argument fh is missing"; |
425 | if ($self->{fh}) { |
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426 | $self->_start; |
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427 | return unless $self->{fh}; # could be gone by now |
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428 | |
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429 | } elsif ($self->{connect}) { |
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430 | require AnyEvent::Socket; |
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431 | |
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432 | $self->{peername} = $self->{connect}[0] |
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433 | unless exists $self->{peername}; |
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434 | |
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435 | $self->{_skip_drain_rbuf} = 1; |
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436 | |
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437 | { |
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438 | Scalar::Util::weaken (my $self = $self); |
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439 | |
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440 | $self->{_connect} = |
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441 | AnyEvent::Socket::tcp_connect ( |
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442 | $self->{connect}[0], |
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443 | $self->{connect}[1], |
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444 | sub { |
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445 | my ($fh, $host, $port, $retry) = @_; |
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446 | |
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447 | if ($fh) { |
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448 | $self->{fh} = $fh; |
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449 | |
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450 | delete $self->{_skip_drain_rbuf}; |
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451 | $self->_start; |
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452 | |
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453 | $self->{on_connect} |
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454 | and $self->{on_connect}($self, $host, $port, sub { |
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455 | delete @$self{qw(fh _tw _rtw _wtw _ww _rw _eof _queue rbuf _wbuf tls _tls_rbuf _tls_wbuf)}; |
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456 | $self->{_skip_drain_rbuf} = 1; |
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457 | &$retry; |
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458 | }); |
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459 | |
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460 | } else { |
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461 | if ($self->{on_connect_error}) { |
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462 | $self->{on_connect_error}($self, "$!"); |
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463 | $self->destroy; |
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464 | } else { |
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465 | $self->_error ($!, 1); |
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466 | } |
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467 | } |
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468 | }, |
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469 | sub { |
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470 | local $self->{fh} = $_[0]; |
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471 | |
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472 | $self->{on_prepare} |
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473 | ? $self->{on_prepare}->($self) |
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474 | : () |
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475 | } |
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476 | ); |
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477 | } |
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478 | |
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479 | } else { |
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480 | Carp::croak "AnyEvent::Handle: either an existing fh or the connect parameter must be specified"; |
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481 | } |
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482 | |
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483 | $self |
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484 | } |
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485 | |
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486 | sub _start { |
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487 | my ($self) = @_; |
365 | |
488 | |
366 | AnyEvent::Util::fh_nonblocking $self->{fh}, 1; |
489 | AnyEvent::Util::fh_nonblocking $self->{fh}, 1; |
367 | |
490 | |
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491 | $self->{_activity} = |
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492 | $self->{_ractivity} = |
368 | $self->{_activity} = AnyEvent->now; |
493 | $self->{_wactivity} = AE::now; |
369 | $self->_timeout; |
494 | |
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495 | $self->timeout (delete $self->{timeout} ) if $self->{timeout}; |
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496 | $self->rtimeout (delete $self->{rtimeout}) if $self->{rtimeout}; |
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497 | $self->wtimeout (delete $self->{wtimeout}) if $self->{wtimeout}; |
370 | |
498 | |
371 | $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}; |
372 | |
500 | |
373 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}) |
501 | $self->starttls (delete $self->{tls}, delete $self->{tls_ctx}) |
374 | if $self->{tls}; |
502 | if $self->{tls}; |
375 | |
503 | |
376 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
504 | $self->on_drain (delete $self->{on_drain}) if $self->{on_drain}; |
377 | |
505 | |
378 | $self->start_read |
506 | $self->start_read |
379 | if $self->{on_read}; |
507 | if $self->{on_read} || @{ $self->{_queue} }; |
380 | |
508 | |
381 | $self->{fh} && $self |
509 | $self->_drain_wbuf; |
382 | } |
510 | } |
383 | |
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384 | #sub _shutdown { |
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385 | # my ($self) = @_; |
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386 | # |
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387 | # delete @$self{qw(_tw _rw _ww fh wbuf on_read _queue)}; |
|
|
388 | # $self->{_eof} = 1; # tell starttls et. al to stop trying |
|
|
389 | # |
|
|
390 | # &_freetls; |
|
|
391 | #} |
|
|
392 | |
511 | |
393 | sub _error { |
512 | sub _error { |
394 | my ($self, $errno, $fatal, $message) = @_; |
513 | my ($self, $errno, $fatal, $message) = @_; |
395 | |
514 | |
396 | $! = $errno; |
515 | $! = $errno; |
… | |
… | |
433 | $_[0]{on_eof} = $_[1]; |
552 | $_[0]{on_eof} = $_[1]; |
434 | } |
553 | } |
435 | |
554 | |
436 | =item $handle->on_timeout ($cb) |
555 | =item $handle->on_timeout ($cb) |
437 | |
556 | |
438 | Replace the current C<on_timeout> callback, or disables the callback (but |
557 | =item $handle->on_rtimeout ($cb) |
439 | not the timeout) if C<$cb> = C<undef>. See the C<timeout> constructor |
|
|
440 | argument and method. |
|
|
441 | |
558 | |
442 | =cut |
559 | =item $handle->on_wtimeout ($cb) |
443 | |
560 | |
444 | sub on_timeout { |
561 | Replace the current C<on_timeout>, C<on_rtimeout> or C<on_wtimeout> |
445 | $_[0]{on_timeout} = $_[1]; |
562 | callback, or disables the callback (but not the timeout) if C<$cb> = |
446 | } |
563 | C<undef>. See the C<timeout> constructor argument and method. |
|
|
564 | |
|
|
565 | =cut |
|
|
566 | |
|
|
567 | # see below |
447 | |
568 | |
448 | =item $handle->autocork ($boolean) |
569 | =item $handle->autocork ($boolean) |
449 | |
570 | |
450 | Enables or disables the current autocork behaviour (see C<autocork> |
571 | Enables or disables the current autocork behaviour (see C<autocork> |
451 | constructor argument). Changes will only take effect on the next write. |
572 | constructor argument). Changes will only take effect on the next write. |
… | |
… | |
466 | sub no_delay { |
587 | sub no_delay { |
467 | $_[0]{no_delay} = $_[1]; |
588 | $_[0]{no_delay} = $_[1]; |
468 | |
589 | |
469 | eval { |
590 | eval { |
470 | local $SIG{__DIE__}; |
591 | local $SIG{__DIE__}; |
471 | setsockopt $_[0]{fh}, &Socket::IPPROTO_TCP, &Socket::TCP_NODELAY, int $_[1]; |
592 | setsockopt $_[0]{fh}, &Socket::IPPROTO_TCP, &Socket::TCP_NODELAY, int $_[1] |
|
|
593 | if $_[0]{fh}; |
472 | }; |
594 | }; |
473 | } |
595 | } |
474 | |
596 | |
475 | =item $handle->on_starttls ($cb) |
597 | =item $handle->on_starttls ($cb) |
476 | |
598 | |
… | |
… | |
490 | |
612 | |
491 | sub on_starttls { |
613 | sub on_starttls { |
492 | $_[0]{on_stoptls} = $_[1]; |
614 | $_[0]{on_stoptls} = $_[1]; |
493 | } |
615 | } |
494 | |
616 | |
|
|
617 | =item $handle->rbuf_max ($max_octets) |
|
|
618 | |
|
|
619 | Configures the C<rbuf_max> setting (C<undef> disables it). |
|
|
620 | |
|
|
621 | =cut |
|
|
622 | |
|
|
623 | sub rbuf_max { |
|
|
624 | $_[0]{rbuf_max} = $_[1]; |
|
|
625 | } |
|
|
626 | |
495 | ############################################################################# |
627 | ############################################################################# |
496 | |
628 | |
497 | =item $handle->timeout ($seconds) |
629 | =item $handle->timeout ($seconds) |
498 | |
630 | |
|
|
631 | =item $handle->rtimeout ($seconds) |
|
|
632 | |
|
|
633 | =item $handle->wtimeout ($seconds) |
|
|
634 | |
499 | Configures (or disables) the inactivity timeout. |
635 | Configures (or disables) the inactivity timeout. |
500 | |
636 | |
501 | =cut |
637 | =item $handle->timeout_reset |
502 | |
638 | |
503 | sub timeout { |
639 | =item $handle->rtimeout_reset |
|
|
640 | |
|
|
641 | =item $handle->wtimeout_reset |
|
|
642 | |
|
|
643 | Reset the activity timeout, as if data was received or sent. |
|
|
644 | |
|
|
645 | These methods are cheap to call. |
|
|
646 | |
|
|
647 | =cut |
|
|
648 | |
|
|
649 | for my $dir ("", "r", "w") { |
|
|
650 | my $timeout = "${dir}timeout"; |
|
|
651 | my $tw = "_${dir}tw"; |
|
|
652 | my $on_timeout = "on_${dir}timeout"; |
|
|
653 | my $activity = "_${dir}activity"; |
|
|
654 | my $cb; |
|
|
655 | |
|
|
656 | *$on_timeout = sub { |
|
|
657 | $_[0]{$on_timeout} = $_[1]; |
|
|
658 | }; |
|
|
659 | |
|
|
660 | *$timeout = sub { |
504 | my ($self, $timeout) = @_; |
661 | my ($self, $new_value) = @_; |
505 | |
662 | |
506 | $self->{timeout} = $timeout; |
663 | $self->{$timeout} = $new_value; |
507 | $self->_timeout; |
664 | delete $self->{$tw}; &$cb; |
508 | } |
665 | }; |
509 | |
666 | |
|
|
667 | *{"${dir}timeout_reset"} = sub { |
|
|
668 | $_[0]{$activity} = AE::now; |
|
|
669 | }; |
|
|
670 | |
|
|
671 | # main workhorse: |
510 | # reset the timeout watcher, as neccessary |
672 | # reset the timeout watcher, as neccessary |
511 | # also check for time-outs |
673 | # also check for time-outs |
512 | sub _timeout { |
674 | $cb = sub { |
513 | my ($self) = @_; |
675 | my ($self) = @_; |
514 | |
676 | |
515 | if ($self->{timeout}) { |
677 | if ($self->{$timeout} && $self->{fh}) { |
516 | my $NOW = AnyEvent->now; |
678 | my $NOW = AE::now; |
517 | |
679 | |
518 | # when would the timeout trigger? |
680 | # when would the timeout trigger? |
519 | my $after = $self->{_activity} + $self->{timeout} - $NOW; |
681 | my $after = $self->{$activity} + $self->{$timeout} - $NOW; |
520 | |
682 | |
521 | # now or in the past already? |
683 | # now or in the past already? |
522 | if ($after <= 0) { |
684 | if ($after <= 0) { |
523 | $self->{_activity} = $NOW; |
685 | $self->{$activity} = $NOW; |
524 | |
686 | |
525 | if ($self->{on_timeout}) { |
687 | if ($self->{$on_timeout}) { |
526 | $self->{on_timeout}($self); |
688 | $self->{$on_timeout}($self); |
527 | } else { |
689 | } else { |
528 | $self->_error (Errno::ETIMEDOUT); |
690 | $self->_error (Errno::ETIMEDOUT); |
|
|
691 | } |
|
|
692 | |
|
|
693 | # callback could have changed timeout value, optimise |
|
|
694 | return unless $self->{$timeout}; |
|
|
695 | |
|
|
696 | # calculate new after |
|
|
697 | $after = $self->{$timeout}; |
529 | } |
698 | } |
530 | |
699 | |
531 | # callback could have changed timeout value, optimise |
700 | Scalar::Util::weaken $self; |
532 | return unless $self->{timeout}; |
701 | return unless $self; # ->error could have destroyed $self |
533 | |
702 | |
534 | # calculate new after |
703 | $self->{$tw} ||= AE::timer $after, 0, sub { |
535 | $after = $self->{timeout}; |
704 | delete $self->{$tw}; |
|
|
705 | $cb->($self); |
|
|
706 | }; |
|
|
707 | } else { |
|
|
708 | delete $self->{$tw}; |
536 | } |
709 | } |
537 | |
|
|
538 | Scalar::Util::weaken $self; |
|
|
539 | return unless $self; # ->error could have destroyed $self |
|
|
540 | |
|
|
541 | $self->{_tw} ||= AnyEvent->timer (after => $after, cb => sub { |
|
|
542 | delete $self->{_tw}; |
|
|
543 | $self->_timeout; |
|
|
544 | }); |
|
|
545 | } else { |
|
|
546 | delete $self->{_tw}; |
|
|
547 | } |
710 | } |
548 | } |
711 | } |
549 | |
712 | |
550 | ############################################################################# |
713 | ############################################################################# |
551 | |
714 | |
… | |
… | |
599 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
762 | my $len = syswrite $self->{fh}, $self->{wbuf}; |
600 | |
763 | |
601 | if (defined $len) { |
764 | if (defined $len) { |
602 | substr $self->{wbuf}, 0, $len, ""; |
765 | substr $self->{wbuf}, 0, $len, ""; |
603 | |
766 | |
604 | $self->{_activity} = AnyEvent->now; |
767 | $self->{_activity} = $self->{_wactivity} = AE::now; |
605 | |
768 | |
606 | $self->{on_drain}($self) |
769 | $self->{on_drain}($self) |
607 | if $self->{low_water_mark} >= (length $self->{wbuf}) + (length $self->{_tls_wbuf}) |
770 | if $self->{low_water_mark} >= (length $self->{wbuf}) + (length $self->{_tls_wbuf}) |
608 | && $self->{on_drain}; |
771 | && $self->{on_drain}; |
609 | |
772 | |
… | |
… | |
615 | |
778 | |
616 | # try to write data immediately |
779 | # try to write data immediately |
617 | $cb->() unless $self->{autocork}; |
780 | $cb->() unless $self->{autocork}; |
618 | |
781 | |
619 | # if still data left in wbuf, we need to poll |
782 | # if still data left in wbuf, we need to poll |
620 | $self->{_ww} = AnyEvent->io (fh => $self->{fh}, poll => "w", cb => $cb) |
783 | $self->{_ww} = AE::io $self->{fh}, 1, $cb |
621 | if length $self->{wbuf}; |
784 | if length $self->{wbuf}; |
622 | }; |
785 | }; |
623 | } |
786 | } |
624 | |
787 | |
625 | our %WH; |
788 | our %WH; |
… | |
… | |
638 | ->($self, @_); |
801 | ->($self, @_); |
639 | } |
802 | } |
640 | |
803 | |
641 | if ($self->{tls}) { |
804 | if ($self->{tls}) { |
642 | $self->{_tls_wbuf} .= $_[0]; |
805 | $self->{_tls_wbuf} .= $_[0]; |
643 | |
806 | &_dotls ($self) if $self->{fh}; |
644 | &_dotls ($self); |
|
|
645 | } else { |
807 | } else { |
646 | $self->{wbuf} .= $_[0]; |
808 | $self->{wbuf} .= $_[0]; |
647 | $self->_drain_wbuf; |
809 | $self->_drain_wbuf if $self->{fh}; |
648 | } |
810 | } |
649 | } |
811 | } |
650 | |
812 | |
651 | =item $handle->push_write (type => @args) |
813 | =item $handle->push_write (type => @args) |
652 | |
814 | |
… | |
… | |
869 | =cut |
1031 | =cut |
870 | |
1032 | |
871 | sub _drain_rbuf { |
1033 | sub _drain_rbuf { |
872 | my ($self) = @_; |
1034 | my ($self) = @_; |
873 | |
1035 | |
|
|
1036 | # avoid recursion |
|
|
1037 | return if $self->{_skip_drain_rbuf}; |
874 | local $self->{_in_drain} = 1; |
1038 | local $self->{_skip_drain_rbuf} = 1; |
875 | |
|
|
876 | if ( |
|
|
877 | defined $self->{rbuf_max} |
|
|
878 | && $self->{rbuf_max} < length $self->{rbuf} |
|
|
879 | ) { |
|
|
880 | $self->_error (Errno::ENOSPC, 1), return; |
|
|
881 | } |
|
|
882 | |
1039 | |
883 | while () { |
1040 | while () { |
884 | # we need to use a separate tls read buffer, as we must not receive data while |
1041 | # we need to use a separate tls read buffer, as we must not receive data while |
885 | # we are draining the buffer, and this can only happen with TLS. |
1042 | # we are draining the buffer, and this can only happen with TLS. |
886 | $self->{rbuf} .= delete $self->{_tls_rbuf} if exists $self->{_tls_rbuf}; |
1043 | $self->{rbuf} .= delete $self->{_tls_rbuf} |
|
|
1044 | if exists $self->{_tls_rbuf}; |
887 | |
1045 | |
888 | my $len = length $self->{rbuf}; |
1046 | my $len = length $self->{rbuf}; |
889 | |
1047 | |
890 | if (my $cb = shift @{ $self->{_queue} }) { |
1048 | if (my $cb = shift @{ $self->{_queue} }) { |
891 | unless ($cb->($self)) { |
1049 | unless ($cb->($self)) { |
892 | if ($self->{_eof}) { |
1050 | # no progress can be made |
893 | # no progress can be made (not enough data and no data forthcoming) |
1051 | # (not enough data and no data forthcoming) |
894 | $self->_error (Errno::EPIPE, 1), return; |
1052 | $self->_error (Errno::EPIPE, 1), return |
895 | } |
1053 | if $self->{_eof}; |
896 | |
1054 | |
897 | unshift @{ $self->{_queue} }, $cb; |
1055 | unshift @{ $self->{_queue} }, $cb; |
898 | last; |
1056 | last; |
899 | } |
1057 | } |
900 | } elsif ($self->{on_read}) { |
1058 | } elsif ($self->{on_read}) { |
… | |
… | |
920 | last; |
1078 | last; |
921 | } |
1079 | } |
922 | } |
1080 | } |
923 | |
1081 | |
924 | if ($self->{_eof}) { |
1082 | if ($self->{_eof}) { |
925 | if ($self->{on_eof}) { |
1083 | $self->{on_eof} |
926 | $self->{on_eof}($self) |
1084 | ? $self->{on_eof}($self) |
927 | } else { |
|
|
928 | $self->_error (0, 1, "Unexpected end-of-file"); |
1085 | : $self->_error (0, 1, "Unexpected end-of-file"); |
929 | } |
1086 | |
|
|
1087 | return; |
|
|
1088 | } |
|
|
1089 | |
|
|
1090 | if ( |
|
|
1091 | defined $self->{rbuf_max} |
|
|
1092 | && $self->{rbuf_max} < length $self->{rbuf} |
|
|
1093 | ) { |
|
|
1094 | $self->_error (Errno::ENOSPC, 1), return; |
930 | } |
1095 | } |
931 | |
1096 | |
932 | # may need to restart read watcher |
1097 | # may need to restart read watcher |
933 | unless ($self->{_rw}) { |
1098 | unless ($self->{_rw}) { |
934 | $self->start_read |
1099 | $self->start_read |
… | |
… | |
946 | |
1111 | |
947 | sub on_read { |
1112 | sub on_read { |
948 | my ($self, $cb) = @_; |
1113 | my ($self, $cb) = @_; |
949 | |
1114 | |
950 | $self->{on_read} = $cb; |
1115 | $self->{on_read} = $cb; |
951 | $self->_drain_rbuf if $cb && !$self->{_in_drain}; |
1116 | $self->_drain_rbuf if $cb; |
952 | } |
1117 | } |
953 | |
1118 | |
954 | =item $handle->rbuf |
1119 | =item $handle->rbuf |
955 | |
1120 | |
956 | Returns the read buffer (as a modifiable lvalue). |
1121 | Returns the read buffer (as a modifiable lvalue). |
… | |
… | |
1008 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
1173 | $cb = ($RH{$type} or Carp::croak "unsupported type passed to AnyEvent::Handle::push_read") |
1009 | ->($self, $cb, @_); |
1174 | ->($self, $cb, @_); |
1010 | } |
1175 | } |
1011 | |
1176 | |
1012 | push @{ $self->{_queue} }, $cb; |
1177 | push @{ $self->{_queue} }, $cb; |
1013 | $self->_drain_rbuf unless $self->{_in_drain}; |
1178 | $self->_drain_rbuf; |
1014 | } |
1179 | } |
1015 | |
1180 | |
1016 | sub unshift_read { |
1181 | sub unshift_read { |
1017 | my $self = shift; |
1182 | my $self = shift; |
1018 | my $cb = pop; |
1183 | my $cb = pop; |
… | |
… | |
1024 | ->($self, $cb, @_); |
1189 | ->($self, $cb, @_); |
1025 | } |
1190 | } |
1026 | |
1191 | |
1027 | |
1192 | |
1028 | unshift @{ $self->{_queue} }, $cb; |
1193 | unshift @{ $self->{_queue} }, $cb; |
1029 | $self->_drain_rbuf unless $self->{_in_drain}; |
1194 | $self->_drain_rbuf; |
1030 | } |
1195 | } |
1031 | |
1196 | |
1032 | =item $handle->push_read (type => @args, $cb) |
1197 | =item $handle->push_read (type => @args, $cb) |
1033 | |
1198 | |
1034 | =item $handle->unshift_read (type => @args, $cb) |
1199 | =item $handle->unshift_read (type => @args, $cb) |
… | |
… | |
1415 | my ($self) = @_; |
1580 | my ($self) = @_; |
1416 | |
1581 | |
1417 | unless ($self->{_rw} || $self->{_eof}) { |
1582 | unless ($self->{_rw} || $self->{_eof}) { |
1418 | Scalar::Util::weaken $self; |
1583 | Scalar::Util::weaken $self; |
1419 | |
1584 | |
1420 | $self->{_rw} = AnyEvent->io (fh => $self->{fh}, poll => "r", cb => sub { |
1585 | $self->{_rw} = AE::io $self->{fh}, 0, sub { |
1421 | my $rbuf = \($self->{tls} ? my $buf : $self->{rbuf}); |
1586 | my $rbuf = \($self->{tls} ? my $buf : $self->{rbuf}); |
1422 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1587 | my $len = sysread $self->{fh}, $$rbuf, $self->{read_size} || 8192, length $$rbuf; |
1423 | |
1588 | |
1424 | if ($len > 0) { |
1589 | if ($len > 0) { |
1425 | $self->{_activity} = AnyEvent->now; |
1590 | $self->{_activity} = $self->{_ractivity} = AE::now; |
1426 | |
1591 | |
1427 | if ($self->{tls}) { |
1592 | if ($self->{tls}) { |
1428 | Net::SSLeay::BIO_write ($self->{_rbio}, $$rbuf); |
1593 | Net::SSLeay::BIO_write ($self->{_rbio}, $$rbuf); |
1429 | |
1594 | |
1430 | &_dotls ($self); |
1595 | &_dotls ($self); |
1431 | } else { |
1596 | } else { |
1432 | $self->_drain_rbuf unless $self->{_in_drain}; |
1597 | $self->_drain_rbuf; |
1433 | } |
1598 | } |
1434 | |
1599 | |
1435 | } elsif (defined $len) { |
1600 | } elsif (defined $len) { |
1436 | delete $self->{_rw}; |
1601 | delete $self->{_rw}; |
1437 | $self->{_eof} = 1; |
1602 | $self->{_eof} = 1; |
1438 | $self->_drain_rbuf unless $self->{_in_drain}; |
1603 | $self->_drain_rbuf; |
1439 | |
1604 | |
1440 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1605 | } elsif ($! != EAGAIN && $! != EINTR && $! != WSAEWOULDBLOCK) { |
1441 | return $self->_error ($!, 1); |
1606 | return $self->_error ($!, 1); |
1442 | } |
1607 | } |
1443 | }); |
1608 | }; |
1444 | } |
1609 | } |
1445 | } |
1610 | } |
1446 | |
1611 | |
1447 | our $ERROR_SYSCALL; |
1612 | our $ERROR_SYSCALL; |
1448 | our $ERROR_WANT_READ; |
1613 | our $ERROR_WANT_READ; |
… | |
… | |
1503 | $self->{_eof} = 1; |
1668 | $self->{_eof} = 1; |
1504 | } |
1669 | } |
1505 | } |
1670 | } |
1506 | |
1671 | |
1507 | $self->{_tls_rbuf} .= $tmp; |
1672 | $self->{_tls_rbuf} .= $tmp; |
1508 | $self->_drain_rbuf unless $self->{_in_drain}; |
1673 | $self->_drain_rbuf; |
1509 | $self->{tls} or return; # tls session might have gone away in callback |
1674 | $self->{tls} or return; # tls session might have gone away in callback |
1510 | } |
1675 | } |
1511 | |
1676 | |
1512 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
1677 | $tmp = Net::SSLeay::get_error ($self->{tls}, -1); |
1513 | return $self->_tls_error ($tmp) |
1678 | return $self->_tls_error ($tmp) |
… | |
… | |
1545 | The TLS connection object will end up in C<< $handle->{tls} >>, the TLS |
1710 | The TLS connection object will end up in C<< $handle->{tls} >>, the TLS |
1546 | context in C<< $handle->{tls_ctx} >> after this call and can be used or |
1711 | context in C<< $handle->{tls_ctx} >> after this call and can be used or |
1547 | changed to your liking. Note that the handshake might have already started |
1712 | changed to your liking. Note that the handshake might have already started |
1548 | when this function returns. |
1713 | when this function returns. |
1549 | |
1714 | |
1550 | If it an error to start a TLS handshake more than once per |
1715 | Due to bugs in OpenSSL, it might or might not be possible to do multiple |
1551 | AnyEvent::Handle object (this is due to bugs in OpenSSL). |
1716 | handshakes on the same stream. Best do not attempt to use the stream after |
|
|
1717 | stopping TLS. |
1552 | |
1718 | |
1553 | =cut |
1719 | =cut |
1554 | |
1720 | |
1555 | our %TLS_CACHE; #TODO not yet documented, should we? |
1721 | our %TLS_CACHE; #TODO not yet documented, should we? |
1556 | |
1722 | |
1557 | sub starttls { |
1723 | sub starttls { |
1558 | my ($self, $ssl, $ctx) = @_; |
1724 | my ($self, $tls, $ctx) = @_; |
|
|
1725 | |
|
|
1726 | Carp::croak "It is an error to call starttls on an AnyEvent::Handle object while TLS is already active, caught" |
|
|
1727 | if $self->{tls}; |
|
|
1728 | |
|
|
1729 | $self->{tls} = $tls; |
|
|
1730 | $self->{tls_ctx} = $ctx if @_ > 2; |
|
|
1731 | |
|
|
1732 | return unless $self->{fh}; |
1559 | |
1733 | |
1560 | require Net::SSLeay; |
1734 | require Net::SSLeay; |
1561 | |
|
|
1562 | Carp::croak "it is an error to call starttls more than once on an AnyEvent::Handle object" |
|
|
1563 | if $self->{tls}; |
|
|
1564 | |
1735 | |
1565 | $ERROR_SYSCALL = Net::SSLeay::ERROR_SYSCALL (); |
1736 | $ERROR_SYSCALL = Net::SSLeay::ERROR_SYSCALL (); |
1566 | $ERROR_WANT_READ = Net::SSLeay::ERROR_WANT_READ (); |
1737 | $ERROR_WANT_READ = Net::SSLeay::ERROR_WANT_READ (); |
1567 | |
1738 | |
|
|
1739 | $tls = $self->{tls}; |
1568 | $ctx ||= $self->{tls_ctx}; |
1740 | $ctx = $self->{tls_ctx}; |
1569 | |
1741 | |
1570 | local $Carp::CarpLevel = 1; # skip ourselves when creating a new context or session |
1742 | local $Carp::CarpLevel = 1; # skip ourselves when creating a new context or session |
1571 | |
1743 | |
1572 | if ("HASH" eq ref $ctx) { |
1744 | if ("HASH" eq ref $ctx) { |
1573 | require AnyEvent::TLS; |
1745 | require AnyEvent::TLS; |
… | |
… | |
1579 | $ctx = new AnyEvent::TLS %$ctx; |
1751 | $ctx = new AnyEvent::TLS %$ctx; |
1580 | } |
1752 | } |
1581 | } |
1753 | } |
1582 | |
1754 | |
1583 | $self->{tls_ctx} = $ctx || TLS_CTX (); |
1755 | $self->{tls_ctx} = $ctx || TLS_CTX (); |
1584 | $self->{tls} = $ssl = $self->{tls_ctx}->_get_session ($ssl, $self, $self->{peername}); |
1756 | $self->{tls} = $tls = $self->{tls_ctx}->_get_session ($tls, $self, $self->{peername}); |
1585 | |
1757 | |
1586 | # basically, this is deep magic (because SSL_read should have the same issues) |
1758 | # basically, this is deep magic (because SSL_read should have the same issues) |
1587 | # but the openssl maintainers basically said: "trust us, it just works". |
1759 | # but the openssl maintainers basically said: "trust us, it just works". |
1588 | # (unfortunately, we have to hardcode constants because the abysmally misdesigned |
1760 | # (unfortunately, we have to hardcode constants because the abysmally misdesigned |
1589 | # and mismaintained ssleay-module doesn't even offer them). |
1761 | # and mismaintained ssleay-module doesn't even offer them). |
… | |
… | |
1596 | # and we drive openssl fully in blocking mode here. Or maybe we don't - openssl seems to |
1768 | # and we drive openssl fully in blocking mode here. Or maybe we don't - openssl seems to |
1597 | # have identity issues in that area. |
1769 | # have identity issues in that area. |
1598 | # Net::SSLeay::CTX_set_mode ($ssl, |
1770 | # Net::SSLeay::CTX_set_mode ($ssl, |
1599 | # (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
1771 | # (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ENABLE_PARTIAL_WRITE () } || 1) |
1600 | # | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
1772 | # | (eval { local $SIG{__DIE__}; Net::SSLeay::MODE_ACCEPT_MOVING_WRITE_BUFFER () } || 2)); |
1601 | Net::SSLeay::CTX_set_mode ($ssl, 1|2); |
1773 | Net::SSLeay::CTX_set_mode ($tls, 1|2); |
1602 | |
1774 | |
1603 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1775 | $self->{_rbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1604 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1776 | $self->{_wbio} = Net::SSLeay::BIO_new (Net::SSLeay::BIO_s_mem ()); |
1605 | |
1777 | |
|
|
1778 | Net::SSLeay::BIO_write ($self->{_rbio}, delete $self->{rbuf}); |
|
|
1779 | |
1606 | Net::SSLeay::set_bio ($ssl, $self->{_rbio}, $self->{_wbio}); |
1780 | Net::SSLeay::set_bio ($tls, $self->{_rbio}, $self->{_wbio}); |
1607 | |
1781 | |
1608 | $self->{_on_starttls} = sub { $_[0]{on_starttls}(@_) } |
1782 | $self->{_on_starttls} = sub { $_[0]{on_starttls}(@_) } |
1609 | if $self->{on_starttls}; |
1783 | if $self->{on_starttls}; |
1610 | |
1784 | |
1611 | &_dotls; # need to trigger the initial handshake |
1785 | &_dotls; # need to trigger the initial handshake |
… | |
… | |
1614 | |
1788 | |
1615 | =item $handle->stoptls |
1789 | =item $handle->stoptls |
1616 | |
1790 | |
1617 | Shuts down the SSL connection - this makes a proper EOF handshake by |
1791 | Shuts down the SSL connection - this makes a proper EOF handshake by |
1618 | sending a close notify to the other side, but since OpenSSL doesn't |
1792 | sending a close notify to the other side, but since OpenSSL doesn't |
1619 | support non-blocking shut downs, it is not possible to re-use the stream |
1793 | support non-blocking shut downs, it is not guarenteed that you can re-use |
1620 | afterwards. |
1794 | the stream afterwards. |
1621 | |
1795 | |
1622 | =cut |
1796 | =cut |
1623 | |
1797 | |
1624 | sub stoptls { |
1798 | sub stoptls { |
1625 | my ($self) = @_; |
1799 | my ($self) = @_; |
… | |
… | |
1638 | sub _freetls { |
1812 | sub _freetls { |
1639 | my ($self) = @_; |
1813 | my ($self) = @_; |
1640 | |
1814 | |
1641 | return unless $self->{tls}; |
1815 | return unless $self->{tls}; |
1642 | |
1816 | |
1643 | $self->{tls_ctx}->_put_session (delete $self->{tls}); |
1817 | $self->{tls_ctx}->_put_session (delete $self->{tls}) |
|
|
1818 | if $self->{tls} > 0; |
1644 | |
1819 | |
1645 | delete @$self{qw(_rbio _wbio _tls_wbuf _on_starttls)}; |
1820 | delete @$self{qw(_rbio _wbio _tls_wbuf _on_starttls)}; |
1646 | } |
1821 | } |
1647 | |
1822 | |
1648 | sub DESTROY { |
1823 | sub DESTROY { |
… | |
… | |
1656 | my $fh = delete $self->{fh}; |
1831 | my $fh = delete $self->{fh}; |
1657 | my $wbuf = delete $self->{wbuf}; |
1832 | my $wbuf = delete $self->{wbuf}; |
1658 | |
1833 | |
1659 | my @linger; |
1834 | my @linger; |
1660 | |
1835 | |
1661 | push @linger, AnyEvent->io (fh => $fh, poll => "w", cb => sub { |
1836 | push @linger, AE::io $fh, 1, sub { |
1662 | my $len = syswrite $fh, $wbuf, length $wbuf; |
1837 | my $len = syswrite $fh, $wbuf, length $wbuf; |
1663 | |
1838 | |
1664 | if ($len > 0) { |
1839 | if ($len > 0) { |
1665 | substr $wbuf, 0, $len, ""; |
1840 | substr $wbuf, 0, $len, ""; |
1666 | } else { |
1841 | } else { |
1667 | @linger = (); # end |
1842 | @linger = (); # end |
1668 | } |
1843 | } |
1669 | }); |
1844 | }; |
1670 | push @linger, AnyEvent->timer (after => $linger, cb => sub { |
1845 | push @linger, AE::timer $linger, 0, sub { |
1671 | @linger = (); |
1846 | @linger = (); |
1672 | }); |
1847 | }; |
1673 | } |
1848 | } |
1674 | } |
1849 | } |
1675 | |
1850 | |
1676 | =item $handle->destroy |
1851 | =item $handle->destroy |
1677 | |
1852 | |
1678 | Shuts down the handle object as much as possible - this call ensures that |
1853 | Shuts down the handle object as much as possible - this call ensures that |
1679 | no further callbacks will be invoked and as many resources as possible |
1854 | no further callbacks will be invoked and as many resources as possible |
1680 | will be freed. You must not call any methods on the object afterwards. |
1855 | will be freed. Any method you will call on the handle object after |
|
|
1856 | destroying it in this way will be silently ignored (and it will return the |
|
|
1857 | empty list). |
1681 | |
1858 | |
1682 | Normally, you can just "forget" any references to an AnyEvent::Handle |
1859 | Normally, you can just "forget" any references to an AnyEvent::Handle |
1683 | object and it will simply shut down. This works in fatal error and EOF |
1860 | object and it will simply shut down. This works in fatal error and EOF |
1684 | callbacks, as well as code outside. It does I<NOT> work in a read or write |
1861 | callbacks, as well as code outside. It does I<NOT> work in a read or write |
1685 | callback, so when you want to destroy the AnyEvent::Handle object from |
1862 | callback, so when you want to destroy the AnyEvent::Handle object from |
… | |
… | |
1699 | sub destroy { |
1876 | sub destroy { |
1700 | my ($self) = @_; |
1877 | my ($self) = @_; |
1701 | |
1878 | |
1702 | $self->DESTROY; |
1879 | $self->DESTROY; |
1703 | %$self = (); |
1880 | %$self = (); |
|
|
1881 | bless $self, "AnyEvent::Handle::destroyed"; |
|
|
1882 | } |
|
|
1883 | |
|
|
1884 | sub AnyEvent::Handle::destroyed::AUTOLOAD { |
|
|
1885 | #nop |
1704 | } |
1886 | } |
1705 | |
1887 | |
1706 | =item AnyEvent::Handle::TLS_CTX |
1888 | =item AnyEvent::Handle::TLS_CTX |
1707 | |
1889 | |
1708 | This function creates and returns the AnyEvent::TLS object used by default |
1890 | This function creates and returns the AnyEvent::TLS object used by default |