| … | |
… | |
| 33 | |
33 | |
| 34 | =cut |
34 | =cut |
| 35 | |
35 | |
| 36 | package AnyEvent::Socket; |
36 | package AnyEvent::Socket; |
| 37 | |
37 | |
| 38 | no warnings; |
|
|
| 39 | use strict; |
|
|
| 40 | |
|
|
| 41 | use Carp (); |
38 | use Carp (); |
| 42 | use Errno (); |
39 | use Errno (); |
| 43 | use Socket qw(AF_INET AF_UNIX SOCK_STREAM SOCK_DGRAM SOL_SOCKET SO_REUSEADDR); |
40 | use Socket qw(AF_INET AF_UNIX SOCK_STREAM SOCK_DGRAM SOL_SOCKET SO_REUSEADDR); |
| 44 | |
41 | |
| 45 | use AnyEvent (); |
42 | use AnyEvent (); BEGIN { AnyEvent::common_sense } |
| 46 | use AnyEvent::Util qw(guard fh_nonblocking AF_INET6); |
43 | use AnyEvent::Util qw(guard fh_nonblocking AF_INET6); |
| 47 | use AnyEvent::DNS (); |
44 | use AnyEvent::DNS (); |
| 48 | |
45 | |
| 49 | use base 'Exporter'; |
46 | use base 'Exporter'; |
| 50 | |
47 | |
| 51 | our @EXPORT = qw( |
48 | our @EXPORT = qw( |
| 52 | parse_hostport |
49 | getprotobyname |
|
|
50 | parse_hostport format_hostport |
| 53 | parse_ipv4 parse_ipv6 |
51 | parse_ipv4 parse_ipv6 |
| 54 | parse_ip parse_address |
52 | parse_ip parse_address |
|
|
53 | format_ipv4 format_ipv6 |
| 55 | format_ip format_address |
54 | format_ip format_address |
| 56 | address_family |
55 | address_family |
| 57 | inet_aton |
56 | inet_aton |
| 58 | tcp_server |
57 | tcp_server |
| 59 | tcp_connect |
58 | tcp_connect |
| 60 | ); |
59 | ); |
| 61 | |
60 | |
| 62 | our $VERSION = 4.233; |
61 | our $VERSION = $AnyEvent::VERSION; |
|
|
62 | |
|
|
63 | # used in cases where we may return immediately but want the |
|
|
64 | # caller to do stuff first |
|
|
65 | sub _postpone { |
|
|
66 | my ($cb, @args) = (@_, $!); |
|
|
67 | |
|
|
68 | my $w; $w = AE::timer 0, 0, sub { |
|
|
69 | undef $w; |
|
|
70 | $! = pop @args; |
|
|
71 | $cb->(@args); |
|
|
72 | }; |
|
|
73 | } |
| 63 | |
74 | |
| 64 | =item $ipn = parse_ipv4 $dotted_quad |
75 | =item $ipn = parse_ipv4 $dotted_quad |
| 65 | |
76 | |
| 66 | Tries to parse the given dotted quad IPv4 address and return it in |
77 | Tries to parse the given dotted quad IPv4 address and return it in |
| 67 | octet form (or undef when it isn't in a parsable format). Supports all |
78 | octet form (or undef when it isn't in a parsable format). Supports all |
| … | |
… | |
| 98 | forms supported by parse_ipv4). Note that scope-id's are not supported |
109 | forms supported by parse_ipv4). Note that scope-id's are not supported |
| 99 | (and will not parse). |
110 | (and will not parse). |
| 100 | |
111 | |
| 101 | This function works similarly to C<inet_pton AF_INET6, ...>. |
112 | This function works similarly to C<inet_pton AF_INET6, ...>. |
| 102 | |
113 | |
|
|
114 | Example: |
|
|
115 | |
|
|
116 | print unpack "H*", parse_ipv6 "2002:5345::10.0.0.1"; |
|
|
117 | # => 2002534500000000000000000a000001 |
|
|
118 | |
| 103 | =cut |
119 | =cut |
| 104 | |
120 | |
| 105 | sub parse_ipv6($) { |
121 | sub parse_ipv6($) { |
| 106 | # quick test to avoid longer processing |
122 | # quick test to avoid longer processing |
| 107 | my $n = $_[0] =~ y/://; |
123 | my $n = $_[0] =~ y/://; |
| … | |
… | |
| 144 | ? pack "S", AF_UNIX |
160 | ? pack "S", AF_UNIX |
| 145 | : undef |
161 | : undef |
| 146 | |
162 | |
| 147 | } |
163 | } |
| 148 | |
164 | |
| 149 | =item $ipn = parse_address $text |
165 | =item $ipn = parse_address $ip |
| 150 | |
166 | |
| 151 | Combines C<parse_ipv4> and C<parse_ipv6> in one function. The address |
167 | Combines C<parse_ipv4> and C<parse_ipv6> in one function. The address |
| 152 | here refers to the host address (not socket address) in network form |
168 | here refers to the host address (not socket address) in network form |
| 153 | (binary). |
169 | (binary). |
| 154 | |
170 | |
| 155 | If the C<$text> is C<unix/>, then this function returns a special token |
171 | If the C<$text> is C<unix/>, then this function returns a special token |
| 156 | recognised by the other functions in this module to mean "UNIX domain |
172 | recognised by the other functions in this module to mean "UNIX domain |
| 157 | socket". |
173 | socket". |
| 158 | |
174 | |
|
|
175 | If the C<$text> to parse is a mapped IPv4 in IPv6 address (:ffff::<ipv4>), |
|
|
176 | then it will be treated as an IPv4 address. If you don't want that, you |
|
|
177 | have to call C<parse_ipv4> and/or C<parse_ipv6> manually. |
|
|
178 | |
|
|
179 | Example: |
|
|
180 | |
|
|
181 | print unpack "H*", parse_address "10.1.2.3"; |
|
|
182 | # => 0a010203 |
|
|
183 | |
| 159 | =item $text = AnyEvent::Socket::aton $ipn |
184 | =item $ipn = AnyEvent::Socket::aton $ip |
| 160 | |
185 | |
| 161 | Same as C<parse_address>, but not exported (think C<Socket::inet_aton> but |
186 | Same as C<parse_address>, but not exported (think C<Socket::inet_aton> but |
| 162 | I<without> name resolution). |
187 | I<without> name resolution). |
| 163 | |
188 | |
| 164 | =cut |
189 | =cut |
| 165 | |
190 | |
| 166 | sub parse_address($) { |
191 | sub parse_address($) { |
| 167 | &parse_ipv4 || &parse_ipv6 || &parse_unix |
192 | for (&parse_ipv6) { |
|
|
193 | if ($_) { |
|
|
194 | s/^\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff//; |
|
|
195 | return $_; |
|
|
196 | } else { |
|
|
197 | return &parse_ipv4 || &parse_unix |
|
|
198 | } |
|
|
199 | } |
| 168 | } |
200 | } |
| 169 | |
201 | |
| 170 | *aton = \&parse_address; |
202 | *aton = \&parse_address; |
|
|
203 | |
|
|
204 | =item ($name, $aliases, $proto) = getprotobyname $name |
|
|
205 | |
|
|
206 | Works like the builtin function of the same name, except it tries hard to |
|
|
207 | work even on broken platforms (well, that's windows), where getprotobyname |
|
|
208 | is traditionally very unreliable. |
|
|
209 | |
|
|
210 | Example: get the protocol number for TCP (usually 6) |
|
|
211 | |
|
|
212 | my $proto = getprotobyname "tcp"; |
|
|
213 | |
|
|
214 | =cut |
|
|
215 | |
|
|
216 | # microsoft can't even get getprotobyname working (the etc/protocols file |
|
|
217 | # gets lost fairly often on windows), so we have to hardcode some common |
|
|
218 | # protocol numbers ourselves. |
|
|
219 | our %PROTO_BYNAME; |
|
|
220 | |
|
|
221 | $PROTO_BYNAME{tcp} = Socket::IPPROTO_TCP () if defined &Socket::IPPROTO_TCP; |
|
|
222 | $PROTO_BYNAME{udp} = Socket::IPPROTO_UDP () if defined &Socket::IPPROTO_UDP; |
|
|
223 | $PROTO_BYNAME{icmp} = Socket::IPPROTO_ICMP() if defined &Socket::IPPROTO_ICMP; |
|
|
224 | |
|
|
225 | sub getprotobyname($) { |
|
|
226 | my $name = lc shift; |
|
|
227 | |
|
|
228 | defined (my $proton = $PROTO_BYNAME{$name} || (getprotobyname $name)[2]) |
|
|
229 | or return; |
|
|
230 | |
|
|
231 | ($name, uc $name, $proton) |
|
|
232 | } |
| 171 | |
233 | |
| 172 | =item ($host, $service) = parse_hostport $string[, $default_service] |
234 | =item ($host, $service) = parse_hostport $string[, $default_service] |
| 173 | |
235 | |
| 174 | Splitting a string of the form C<hostname:port> is a common |
236 | Splitting a string of the form C<hostname:port> is a common |
| 175 | problem. Unfortunately, just splitting on the colon makes it hard to |
237 | problem. Unfortunately, just splitting on the colon makes it hard to |
| … | |
… | |
| 191 | ipv4or6 port e.g. "::1 443", "10.0.0.1 smtp" |
253 | ipv4or6 port e.g. "::1 443", "10.0.0.1 smtp" |
| 192 | |
254 | |
| 193 | It also supports defaulting the service name in a simple way by using |
255 | It also supports defaulting the service name in a simple way by using |
| 194 | C<$default_service> if no service was detected. If neither a service was |
256 | C<$default_service> if no service was detected. If neither a service was |
| 195 | detected nor a default was specified, then this function returns the |
257 | detected nor a default was specified, then this function returns the |
| 196 | empty list. The same happens when a parse error weas detected, such as a |
258 | empty list. The same happens when a parse error was detected, such as a |
| 197 | hostname with a colon in it (the function is rather conservative, though). |
259 | hostname with a colon in it (the function is rather conservative, though). |
| 198 | |
260 | |
| 199 | Example: |
261 | Example: |
| 200 | |
262 | |
| 201 | print join ",", parse_hostport "localhost:443"; |
263 | print join ",", parse_hostport "localhost:443"; |
| … | |
… | |
| 244 | return if $host =~ /:/ && !parse_ipv6 $host; |
306 | return if $host =~ /:/ && !parse_ipv6 $host; |
| 245 | |
307 | |
| 246 | ($host, $port) |
308 | ($host, $port) |
| 247 | } |
309 | } |
| 248 | |
310 | |
|
|
311 | =item $string = format_hostport $host, $port |
|
|
312 | |
|
|
313 | Takes a host (in textual form) and a port and formats in unambigiously in |
|
|
314 | a way that C<parse_hostport> can parse it again. C<$port> can be C<undef>. |
|
|
315 | |
|
|
316 | =cut |
|
|
317 | |
|
|
318 | sub format_hostport($;$) { |
|
|
319 | my ($host, $port) = @_; |
|
|
320 | |
|
|
321 | $port = ":$port" if length $port; |
|
|
322 | $host = "[$host]" if $host =~ /:/; |
|
|
323 | |
|
|
324 | "$host$port" |
|
|
325 | } |
|
|
326 | |
| 249 | =item $sa_family = address_family $ipn |
327 | =item $sa_family = address_family $ipn |
| 250 | |
328 | |
| 251 | Returns the address family/protocol-family (AF_xxx/PF_xxx, in one value :) |
329 | Returns the address family/protocol-family (AF_xxx/PF_xxx, in one value :) |
| 252 | of the given host address in network format. |
330 | of the given host address in network format. |
| 253 | |
331 | |
| … | |
… | |
| 259 | : 16 == length $_[0] |
337 | : 16 == length $_[0] |
| 260 | ? AF_INET6 |
338 | ? AF_INET6 |
| 261 | : unpack "S", $_[0] |
339 | : unpack "S", $_[0] |
| 262 | } |
340 | } |
| 263 | |
341 | |
|
|
342 | =item $text = format_ipv4 $ipn |
|
|
343 | |
|
|
344 | Expects a four octet string representing a binary IPv4 address and returns |
|
|
345 | its textual format. Rarely used, see C<format_address> for a nicer |
|
|
346 | interface. |
|
|
347 | |
|
|
348 | =item $text = format_ipv6 $ipn |
|
|
349 | |
|
|
350 | Expects a sixteen octet string representing a binary IPv6 address and |
|
|
351 | returns its textual format. Rarely used, see C<format_address> for a |
|
|
352 | nicer interface. |
|
|
353 | |
| 264 | =item $text = format_address $ipn |
354 | =item $text = format_address $ipn |
| 265 | |
355 | |
| 266 | Covnvert a host address in network format (e.g. 4 octets for IPv4 or 16 |
356 | Covnvert a host address in network format (e.g. 4 octets for IPv4 or 16 |
| 267 | octets for IPv6) and convert it into textual form. |
357 | octets for IPv6) and convert it into textual form. |
| 268 | |
358 | |
| … | |
… | |
| 271 | This function works similarly to C<inet_ntop AF_INET || AF_INET6, ...>, |
361 | This function works similarly to C<inet_ntop AF_INET || AF_INET6, ...>, |
| 272 | except it automatically detects the address type. |
362 | except it automatically detects the address type. |
| 273 | |
363 | |
| 274 | Returns C<undef> if it cannot detect the type. |
364 | Returns C<undef> if it cannot detect the type. |
| 275 | |
365 | |
|
|
366 | If the C<$ipn> is a mapped IPv4 in IPv6 address (:ffff::<ipv4>), then just |
|
|
367 | the contained IPv4 address will be returned. If you do not want that, you |
|
|
368 | have to call C<format_ipv6> manually. |
|
|
369 | |
|
|
370 | Example: |
|
|
371 | |
|
|
372 | print format_address "\x01\x02\x03\x05"; |
|
|
373 | => 1.2.3.5 |
|
|
374 | |
| 276 | =item $text = AnyEvent::Socket::ntoa $ipn |
375 | =item $text = AnyEvent::Socket::ntoa $ipn |
| 277 | |
376 | |
| 278 | Same as format_address, but not exported (think C<inet_ntoa>). |
377 | Same as format_address, but not exported (think C<inet_ntoa>). |
| 279 | |
378 | |
| 280 | =cut |
379 | =cut |
| 281 | |
380 | |
| 282 | sub format_address; |
381 | sub format_ipv4($) { |
| 283 | sub format_address($) { |
|
|
| 284 | my $af = address_family $_[0]; |
|
|
| 285 | if ($af == AF_INET) { |
|
|
| 286 | return join ".", unpack "C4", $_[0] |
382 | join ".", unpack "C4", $_[0] |
| 287 | } elsif ($af == AF_INET6) { |
383 | } |
|
|
384 | |
|
|
385 | sub format_ipv6($) { |
|
|
386 | if ($_[0] =~ /^\x00\x00\x00\x00\x00\x00\x00\x00/) { |
| 288 | if (v0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 eq $_[0]) { |
387 | if (v0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0 eq $_[0]) { |
| 289 | return "::"; |
388 | return "::"; |
| 290 | } elsif (v0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1 eq $_[0]) { |
389 | } elsif (v0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1 eq $_[0]) { |
| 291 | return "::1"; |
390 | return "::1"; |
| 292 | } elsif (v0.0.0.0.0.0.0.0.0.0.0.0 eq substr $_[0], 0, 12) { |
391 | } elsif (v0.0.0.0.0.0.0.0.0.0.0.0 eq substr $_[0], 0, 12) { |
| 293 | # v4compatible |
392 | # v4compatible |
| 294 | return "::" . format_address substr $_[0], 12; |
393 | return "::" . format_ipv4 substr $_[0], 12; |
| 295 | } elsif (v0.0.0.0.0.0.0.0.0.0.255.255 eq substr $_[0], 0, 12) { |
394 | } elsif (v0.0.0.0.0.0.0.0.0.0.255.255 eq substr $_[0], 0, 12) { |
| 296 | # v4mapped |
395 | # v4mapped |
| 297 | return "::ffff:" . format_address substr $_[0], 12; |
396 | return "::ffff:" . format_ipv4 substr $_[0], 12; |
| 298 | } elsif (v0.0.0.0.0.0.0.0.255.255.0.0 eq substr $_[0], 0, 12) { |
397 | } elsif (v0.0.0.0.0.0.0.0.255.255.0.0 eq substr $_[0], 0, 12) { |
| 299 | # v4translated |
398 | # v4translated |
| 300 | return "::ffff:0:" . format_address substr $_[0], 12; |
399 | return "::ffff:0:" . format_ipv4 substr $_[0], 12; |
| 301 | } else { |
|
|
| 302 | my $ip = sprintf "%x:%x:%x:%x:%x:%x:%x:%x", unpack "n8", $_[0]; |
|
|
| 303 | |
|
|
| 304 | # this is rather sucky, I admit |
|
|
| 305 | $ip =~ s/^0:(?:0:)*(0$)?/::/ |
|
|
| 306 | or $ip =~ s/(:0){7}$/::/ or $ip =~ s/(:0){7}/:/ |
|
|
| 307 | or $ip =~ s/(:0){6}$/::/ or $ip =~ s/(:0){6}/:/ |
|
|
| 308 | or $ip =~ s/(:0){5}$/::/ or $ip =~ s/(:0){5}/:/ |
|
|
| 309 | or $ip =~ s/(:0){4}$/::/ or $ip =~ s/(:0){4}/:/ |
|
|
| 310 | or $ip =~ s/(:0){3}$/::/ or $ip =~ s/(:0){3}/:/ |
|
|
| 311 | or $ip =~ s/(:0){2}$/::/ or $ip =~ s/(:0){2}/:/ |
|
|
| 312 | or $ip =~ s/(:0){1}$/::/ or $ip =~ s/(:0){1}/:/; |
|
|
| 313 | return $ip |
|
|
| 314 | } |
400 | } |
| 315 | } elsif ($af == AF_UNIX) { |
401 | } |
|
|
402 | |
|
|
403 | my $ip = sprintf "%x:%x:%x:%x:%x:%x:%x:%x", unpack "n8", $_[0]; |
|
|
404 | |
|
|
405 | # this is admittedly rather sucky |
|
|
406 | $ip =~ s/(?:^|:) 0:0:0:0:0:0:0 (?:$|:)/::/x |
|
|
407 | or $ip =~ s/(?:^|:) 0:0:0:0:0:0 (?:$|:)/::/x |
|
|
408 | or $ip =~ s/(?:^|:) 0:0:0:0:0 (?:$|:)/::/x |
|
|
409 | or $ip =~ s/(?:^|:) 0:0:0:0 (?:$|:)/::/x |
|
|
410 | or $ip =~ s/(?:^|:) 0:0:0 (?:$|:)/::/x |
|
|
411 | or $ip =~ s/(?:^|:) 0:0 (?:$|:)/::/x |
|
|
412 | or $ip =~ s/(?:^|:) 0 (?:$|:)/::/x; |
|
|
413 | |
|
|
414 | $ip |
|
|
415 | } |
|
|
416 | |
|
|
417 | sub format_address($) { |
|
|
418 | if (4 == length $_[0]) { |
|
|
419 | return &format_ipv4; |
|
|
420 | } elsif (16 == length $_[0]) { |
|
|
421 | return $_[0] =~ /^\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff(....)$/s |
|
|
422 | ? format_ipv4 $1 |
|
|
423 | : &format_ipv6; |
|
|
424 | } elsif (AF_UNIX == address_family $_[0]) { |
| 316 | return "unix/" |
425 | return "unix/" |
| 317 | } else { |
426 | } else { |
| 318 | return undef |
427 | return undef |
| 319 | } |
428 | } |
| 320 | } |
429 | } |
| … | |
… | |
| 322 | *ntoa = \&format_address; |
431 | *ntoa = \&format_address; |
| 323 | |
432 | |
| 324 | =item inet_aton $name_or_address, $cb->(@addresses) |
433 | =item inet_aton $name_or_address, $cb->(@addresses) |
| 325 | |
434 | |
| 326 | Works similarly to its Socket counterpart, except that it uses a |
435 | Works similarly to its Socket counterpart, except that it uses a |
| 327 | callback. Also, if a host has only an IPv6 address, this might be passed |
436 | callback. Use the length to distinguish between ipv4 and ipv6 (4 octets |
| 328 | to the callback instead (use the length to detect this - 4 for IPv4, 16 |
437 | for IPv4, 16 for IPv6), or use C<format_address> to convert it to a more |
| 329 | for IPv6). |
438 | readable format. |
| 330 | |
439 | |
| 331 | Unlike the L<Socket> function of the same name, you can get multiple IPv4 |
440 | Note that C<resolve_sockaddr>, while initially a more complex interface, |
| 332 | and IPv6 addresses as result (and maybe even other adrdess types). |
441 | resolves host addresses, IDNs, service names and SRV records and gives you |
|
|
442 | an ordered list of socket addresses to try and should be preferred over |
|
|
443 | C<inet_aton>. |
|
|
444 | |
|
|
445 | Example. |
|
|
446 | |
|
|
447 | inet_aton "www.google.com", my $cv = AE::cv; |
|
|
448 | say unpack "H*", $_ |
|
|
449 | for $cv->recv; |
|
|
450 | # => d155e363 |
|
|
451 | # => d155e367 etc. |
|
|
452 | |
|
|
453 | inet_aton "ipv6.google.com", my $cv = AE::cv; |
|
|
454 | say unpack "H*", $_ |
|
|
455 | for $cv->recv; |
|
|
456 | # => 20014860a00300000000000000000068 |
| 333 | |
457 | |
| 334 | =cut |
458 | =cut |
| 335 | |
459 | |
| 336 | sub inet_aton { |
460 | sub inet_aton { |
| 337 | my ($name, $cb) = @_; |
461 | my ($name, $cb) = @_; |
| … | |
… | |
| 343 | } elsif ($name eq "localhost") { # rfc2606 et al. |
467 | } elsif ($name eq "localhost") { # rfc2606 et al. |
| 344 | $cb->(v127.0.0.1, v0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1); |
468 | $cb->(v127.0.0.1, v0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1); |
| 345 | } else { |
469 | } else { |
| 346 | require AnyEvent::DNS; |
470 | require AnyEvent::DNS; |
| 347 | |
471 | |
| 348 | # simple, bad suboptimal algorithm |
472 | my $ipv4 = $AnyEvent::PROTOCOL{ipv4}; |
|
|
473 | my $ipv6 = $AnyEvent::PROTOCOL{ipv6}; |
|
|
474 | |
|
|
475 | my @res; |
|
|
476 | |
|
|
477 | my $cv = AE::cv { |
|
|
478 | $cb->(map @$_, reverse @res); |
|
|
479 | }; |
|
|
480 | |
|
|
481 | $cv->begin; |
|
|
482 | |
|
|
483 | if ($ipv4) { |
|
|
484 | $cv->begin; |
| 349 | AnyEvent::DNS::a ($name, sub { |
485 | AnyEvent::DNS::a ($name, sub { |
| 350 | if (@_) { |
486 | $res[$ipv4] = [map &parse_ipv4, @_]; |
| 351 | $cb->(map +(parse_ipv4 $_), @_); |
|
|
| 352 | } else { |
|
|
| 353 | $cb->(); |
487 | $cv->end; |
| 354 | #AnyEvent::DNS::aaaa ($name, $cb); need inet_pton |
|
|
| 355 | } |
488 | }); |
| 356 | }); |
489 | }; |
| 357 | } |
|
|
| 358 | } |
|
|
| 359 | |
490 | |
|
|
491 | if ($ipv6) { |
|
|
492 | $cv->begin; |
|
|
493 | AnyEvent::DNS::aaaa ($name, sub { |
|
|
494 | $res[$ipv6] = [map &parse_ipv6, @_]; |
|
|
495 | $cv->end; |
|
|
496 | }); |
|
|
497 | }; |
|
|
498 | |
|
|
499 | $cv->end; |
|
|
500 | } |
|
|
501 | } |
|
|
502 | |
|
|
503 | BEGIN { |
|
|
504 | *sockaddr_family = $Socket::VERSION >= 1.75 |
|
|
505 | ? \&Socket::sockaddr_family |
|
|
506 | : # for 5.6.x, we need to do something much more horrible |
|
|
507 | (Socket::pack_sockaddr_in 0x5555, "\x55\x55\x55\x55" |
|
|
508 | | eval { Socket::pack_sockaddr_un "U" }) =~ /^\x00/ |
|
|
509 | ? sub { unpack "xC", $_[0] } |
|
|
510 | : sub { unpack "S" , $_[0] }; |
|
|
511 | } |
|
|
512 | |
| 360 | # check for broken platforms with extra field in sockaddr structure |
513 | # check for broken platforms with an extra field in sockaddr structure |
| 361 | # kind of a rfc vs. bsd issue, as usual (ok, normally it's a |
514 | # kind of a rfc vs. bsd issue, as usual (ok, normally it's a |
| 362 | # unix vs. bsd issue, a iso C vs. bsd issue or simply a |
515 | # unix vs. bsd issue, a iso C vs. bsd issue or simply a |
| 363 | # correctness vs. bsd issue. |
516 | # correctness vs. bsd issue.) |
| 364 | my $pack_family = (0x55 == Socket::sockaddr_family "\x55\x55") |
517 | my $pack_family = 0x55 == sockaddr_family ("\x55\x55") |
| 365 | ? "xC" : "S"; |
518 | ? "xC" : "S"; |
| 366 | |
519 | |
| 367 | =item $sa = AnyEvent::Socket::pack_sockaddr $service, $host |
520 | =item $sa = AnyEvent::Socket::pack_sockaddr $service, $host |
| 368 | |
521 | |
| 369 | Pack the given port/host combination into a binary sockaddr |
522 | Pack the given port/host combination into a binary sockaddr |
| 370 | structure. Handles both IPv4 and IPv6 host addresses, as well as UNIX |
523 | structure. Handles both IPv4 and IPv6 host addresses, as well as UNIX |
| 371 | domain sockets (C<$host> == C<unix/> and C<$service> == absolute |
524 | domain sockets (C<$host> == C<unix/> and C<$service> == absolute |
| 372 | pathname). |
525 | pathname). |
|
|
526 | |
|
|
527 | Example: |
|
|
528 | |
|
|
529 | my $bind = AnyEvent::Socket::pack_sockaddr 43, v195.234.53.120; |
|
|
530 | bind $socket, $bind |
|
|
531 | or die "bind: $!"; |
| 373 | |
532 | |
| 374 | =cut |
533 | =cut |
| 375 | |
534 | |
| 376 | sub pack_sockaddr($$) { |
535 | sub pack_sockaddr($$) { |
| 377 | my $af = address_family $_[1]; |
536 | my $af = address_family $_[1]; |
| … | |
… | |
| 404 | is a special token that is understood by the other functions in this |
563 | is a special token that is understood by the other functions in this |
| 405 | module (C<format_address> converts it to C<unix/>). |
564 | module (C<format_address> converts it to C<unix/>). |
| 406 | |
565 | |
| 407 | =cut |
566 | =cut |
| 408 | |
567 | |
|
|
568 | # perl contains a bug (imho) where it requires that the kernel always returns |
|
|
569 | # sockaddr_un structures of maximum length (which is not, AFAICS, required |
|
|
570 | # by any standard). try to 0-pad structures for the benefit of those platforms. |
|
|
571 | |
|
|
572 | my $sa_un_zero = eval { Socket::pack_sockaddr_un "" }; $sa_un_zero ^= $sa_un_zero; |
|
|
573 | |
| 409 | sub unpack_sockaddr($) { |
574 | sub unpack_sockaddr($) { |
| 410 | my $af = Socket::sockaddr_family $_[0]; |
575 | my $af = sockaddr_family $_[0]; |
| 411 | |
576 | |
| 412 | if ($af == AF_INET) { |
577 | if ($af == AF_INET) { |
| 413 | Socket::unpack_sockaddr_in $_[0] |
578 | Socket::unpack_sockaddr_in $_[0] |
| 414 | } elsif ($af == AF_INET6) { |
579 | } elsif ($af == AF_INET6) { |
| 415 | unpack "x2 n x4 a16", $_[0] |
580 | unpack "x2 n x4 a16", $_[0] |
| 416 | } elsif ($af == AF_UNIX) { |
581 | } elsif ($af == AF_UNIX) { |
| 417 | ((Socket::unpack_sockaddr_un $_[0]), pack "S", AF_UNIX) |
582 | ((Socket::unpack_sockaddr_un $_[0] ^ $sa_un_zero), pack "S", AF_UNIX) |
| 418 | } else { |
583 | } else { |
| 419 | Carp::croak "unpack_sockaddr: unsupported protocol family $af"; |
584 | Carp::croak "unpack_sockaddr: unsupported protocol family $af"; |
| 420 | } |
585 | } |
| 421 | } |
586 | } |
| 422 | |
587 | |
| … | |
… | |
| 425 | Tries to resolve the given nodename and service name into protocol families |
590 | Tries to resolve the given nodename and service name into protocol families |
| 426 | and sockaddr structures usable to connect to this node and service in a |
591 | and sockaddr structures usable to connect to this node and service in a |
| 427 | protocol-independent way. It works remotely similar to the getaddrinfo |
592 | protocol-independent way. It works remotely similar to the getaddrinfo |
| 428 | posix function. |
593 | posix function. |
| 429 | |
594 | |
| 430 | For internet addresses, C<$node> is either an IPv4 or IPv6 address or an |
595 | For internet addresses, C<$node> is either an IPv4 or IPv6 address, an |
| 431 | internet hostname, and C<$service> is either a service name (port name |
596 | internet hostname (DNS domain name or IDN), and C<$service> is either |
| 432 | from F</etc/services>) or a numerical port number. If both C<$node> and |
597 | a service name (port name from F</etc/services>) or a numerical port |
| 433 | C<$service> are names, then SRV records will be consulted to find the real |
598 | number. If both C<$node> and C<$service> are names, then SRV records |
| 434 | service, otherwise they will be used as-is. If you know that the service |
599 | will be consulted to find the real service, otherwise they will be |
| 435 | name is not in your services database, then you can specify the service in |
600 | used as-is. If you know that the service name is not in your services |
| 436 | the format C<name=port> (e.g. C<http=80>). |
601 | database, then you can specify the service in the format C<name=port> |
|
|
602 | (e.g. C<http=80>). |
| 437 | |
603 | |
| 438 | For UNIX domain sockets, C<$node> must be the string C<unix/> and |
604 | For UNIX domain sockets, C<$node> must be the string C<unix/> and |
| 439 | C<$service> must be the absolute pathname of the socket. In this case, |
605 | C<$service> must be the absolute pathname of the socket. In this case, |
| 440 | C<$proto> will be ignored. |
606 | C<$proto> will be ignored. |
| 441 | |
607 | |
| … | |
… | |
| 443 | C<sctp>. The default is currently C<tcp>, but in the future, this function |
609 | C<sctp>. The default is currently C<tcp>, but in the future, this function |
| 444 | might try to use other protocols such as C<sctp>, depending on the socket |
610 | might try to use other protocols such as C<sctp>, depending on the socket |
| 445 | type and any SRV records it might find. |
611 | type and any SRV records it might find. |
| 446 | |
612 | |
| 447 | C<$family> must be either C<0> (meaning any protocol is OK), C<4> (use |
613 | C<$family> must be either C<0> (meaning any protocol is OK), C<4> (use |
| 448 | only IPv4) or C<6> (use only IPv6). This setting might be influenced by |
614 | only IPv4) or C<6> (use only IPv6). The default is influenced by |
| 449 | C<$ENV{PERL_ANYEVENT_PROTOCOLS}>. |
615 | C<$ENV{PERL_ANYEVENT_PROTOCOLS}>. |
| 450 | |
616 | |
| 451 | C<$type> must be C<SOCK_STREAM>, C<SOCK_DGRAM> or C<SOCK_SEQPACKET> (or |
617 | C<$type> must be C<SOCK_STREAM>, C<SOCK_DGRAM> or C<SOCK_SEQPACKET> (or |
| 452 | C<undef> in which case it gets automatically chosen). |
618 | C<undef> in which case it gets automatically chosen to be C<SOCK_STREAM> |
|
|
619 | unless C<$proto> is C<udp>). |
| 453 | |
620 | |
| 454 | The callback will receive zero or more array references that contain |
621 | The callback will receive zero or more array references that contain |
| 455 | C<$family, $type, $proto> for use in C<socket> and a binary |
622 | C<$family, $type, $proto> for use in C<socket> and a binary |
| 456 | C<$sockaddr> for use in C<connect> (or C<bind>). |
623 | C<$sockaddr> for use in C<connect> (or C<bind>). |
| 457 | |
624 | |
| … | |
… | |
| 461 | |
628 | |
| 462 | resolve_sockaddr "google.com", "http", 0, undef, undef, sub { ... }; |
629 | resolve_sockaddr "google.com", "http", 0, undef, undef, sub { ... }; |
| 463 | |
630 | |
| 464 | =cut |
631 | =cut |
| 465 | |
632 | |
| 466 | # microsoft can't even get getprotobyname working (the etc/protocols file |
|
|
| 467 | # gets lost fairly often on windows), so we have to hardcode some common |
|
|
| 468 | # protocol numbers ourselves. |
|
|
| 469 | our %PROTO_BYNAME; |
|
|
| 470 | |
|
|
| 471 | $PROTO_BYNAME{tcp} = &Socket::IPPROTO_TCP if defined &Socket::IPPROTO_TCP; |
|
|
| 472 | $PROTO_BYNAME{udp} = &Socket::IPPROTO_UDP if defined &Socket::IPPROTO_UDP; |
|
|
| 473 | $PROTO_BYNAME{icmp} = &Socket::IPPROTO_ICMP if defined &Socket::IPPROTO_ICMP; |
|
|
| 474 | |
|
|
| 475 | sub resolve_sockaddr($$$$$$) { |
633 | sub resolve_sockaddr($$$$$$) { |
| 476 | my ($node, $service, $proto, $family, $type, $cb) = @_; |
634 | my ($node, $service, $proto, $family, $type, $cb) = @_; |
| 477 | |
635 | |
| 478 | if ($node eq "unix/") { |
636 | if ($node eq "unix/") { |
| 479 | return $cb->() if $family || !/^\//; # no can do |
637 | return $cb->() if $family || $service !~ /^\//; # no can do |
| 480 | |
638 | |
| 481 | return $cb->([AF_UNIX, $type, 0, Socket::pack_sockaddr_un $service]); |
639 | return $cb->([AF_UNIX, defined $type ? $type : SOCK_STREAM, 0, Socket::pack_sockaddr_un $service]); |
| 482 | } |
640 | } |
| 483 | |
641 | |
| 484 | unless (AF_INET6) { |
642 | unless (AF_INET6) { |
| 485 | $family != 6 |
643 | $family != 6 |
| 486 | or return $cb->(); |
644 | or return $cb->(); |
| … | |
… | |
| 495 | $family ||= 6 unless $AnyEvent::PROTOCOL{ipv4}; |
653 | $family ||= 6 unless $AnyEvent::PROTOCOL{ipv4}; |
| 496 | |
654 | |
| 497 | $proto ||= "tcp"; |
655 | $proto ||= "tcp"; |
| 498 | $type ||= $proto eq "udp" ? SOCK_DGRAM : SOCK_STREAM; |
656 | $type ||= $proto eq "udp" ? SOCK_DGRAM : SOCK_STREAM; |
| 499 | |
657 | |
| 500 | my $proton = $PROTO_BYNAME{lc $proto} || (getprotobyname $proto)[2] |
658 | my $proton = getprotobyname $proto |
| 501 | or Carp::croak "$proto: protocol unknown"; |
659 | or Carp::croak "$proto: protocol unknown"; |
| 502 | |
660 | |
| 503 | my $port; |
661 | my $port; |
| 504 | |
662 | |
| 505 | if ($service =~ /^(\S+)=(\d+)$/) { |
663 | if ($service =~ /^(\S+)=(\d+)$/) { |
| … | |
… | |
| 509 | } else { |
667 | } else { |
| 510 | $port = (getservbyname $service, $proto)[2] |
668 | $port = (getservbyname $service, $proto)[2] |
| 511 | or Carp::croak "$service/$proto: service unknown"; |
669 | or Carp::croak "$service/$proto: service unknown"; |
| 512 | } |
670 | } |
| 513 | |
671 | |
| 514 | my @target = [$node, $port]; |
|
|
| 515 | |
|
|
| 516 | # resolve a records / provide sockaddr structures |
672 | # resolve a records / provide sockaddr structures |
| 517 | my $resolve = sub { |
673 | my $resolve = sub { |
|
|
674 | my @target = @_; |
|
|
675 | |
| 518 | my @res; |
676 | my @res; |
| 519 | my $cv = AnyEvent->condvar (cb => sub { |
677 | my $cv = AE::cv { |
| 520 | $cb->( |
678 | $cb->( |
| 521 | map $_->[2], |
679 | map $_->[2], |
| 522 | sort { |
680 | sort { |
| 523 | $AnyEvent::PROTOCOL{$b->[1]} <=> $AnyEvent::PROTOCOL{$a->[1]} |
681 | $AnyEvent::PROTOCOL{$b->[1]} <=> $AnyEvent::PROTOCOL{$a->[1]} |
| 524 | or $a->[0] <=> $b->[0] |
682 | or $a->[0] <=> $b->[0] |
| 525 | } |
683 | } |
| 526 | @res |
684 | @res |
| 527 | ) |
685 | ) |
| 528 | }); |
686 | }; |
| 529 | |
687 | |
| 530 | $cv->begin; |
688 | $cv->begin; |
| 531 | for my $idx (0 .. $#target) { |
689 | for my $idx (0 .. $#target) { |
| 532 | my ($node, $port) = @{ $target[$idx] }; |
690 | my ($node, $port) = @{ $target[$idx] }; |
| 533 | |
691 | |
| … | |
… | |
| 568 | } |
726 | } |
| 569 | } |
727 | } |
| 570 | $cv->end; |
728 | $cv->end; |
| 571 | }; |
729 | }; |
| 572 | |
730 | |
|
|
731 | $node = AnyEvent::Util::idn_to_ascii $node |
|
|
732 | if $node =~ /[^\x00-\x7f]/; |
|
|
733 | |
| 573 | # try srv records, if applicable |
734 | # try srv records, if applicable |
| 574 | if ($node eq "localhost") { |
735 | if ($node eq "localhost") { |
| 575 | @target = (["127.0.0.1", $port], ["::1", $port]); |
736 | $resolve->(["127.0.0.1", $port], ["::1", $port]); |
| 576 | &$resolve; |
|
|
| 577 | } elsif (defined $service && !parse_address $node) { |
737 | } elsif (defined $service && !parse_address $node) { |
| 578 | AnyEvent::DNS::srv $service, $proto, $node, sub { |
738 | AnyEvent::DNS::srv $service, $proto, $node, sub { |
| 579 | my (@srv) = @_; |
739 | my (@srv) = @_; |
| 580 | |
740 | |
| 581 | # no srv records, continue traditionally |
|
|
| 582 | @srv |
741 | if (@srv) { |
| 583 | or return &$resolve; |
|
|
| 584 | |
|
|
| 585 | # the only srv record has "." ("" here) => abort |
742 | # the only srv record has "." ("" here) => abort |
| 586 | $srv[0][2] ne "" || $#srv |
743 | $srv[0][2] ne "" || $#srv |
| 587 | or return $cb->(); |
744 | or return $cb->(); |
| 588 | |
745 | |
| 589 | # use srv records then |
746 | # use srv records then |
|
|
747 | $resolve->( |
| 590 | @target = map ["$_->[3].", $_->[2]], |
748 | map ["$_->[3].", $_->[2]], |
| 591 | grep $_->[3] ne ".", |
749 | grep $_->[3] ne ".", |
| 592 | @srv; |
750 | @srv |
| 593 | |
751 | ); |
| 594 | &$resolve; |
752 | } else { |
|
|
753 | # no srv records, continue traditionally |
|
|
754 | $resolve->([$node, $port]); |
|
|
755 | } |
| 595 | }; |
756 | }; |
| 596 | } else { |
757 | } else { |
| 597 | &$resolve; |
758 | # most common case |
|
|
759 | $resolve->([$node, $port]); |
| 598 | } |
760 | } |
| 599 | } |
761 | } |
| 600 | |
762 | |
| 601 | =item $guard = tcp_connect $host, $service, $connect_cb[, $prepare_cb] |
763 | =item $guard = tcp_connect $host, $service, $connect_cb[, $prepare_cb] |
| 602 | |
764 | |
| 603 | This is a convenience function that creates a TCP socket and makes a 100% |
765 | This is a convenience function that creates a TCP socket and makes a |
| 604 | non-blocking connect to the given C<$host> (which can be a hostname or |
766 | 100% non-blocking connect to the given C<$host> (which can be a DNS/IDN |
| 605 | a textual IP address, or the string C<unix/> for UNIX domain sockets) |
767 | hostname or a textual IP address, or the string C<unix/> for UNIX domain |
| 606 | and C<$service> (which can be a numeric port number or a service name, |
768 | sockets) and C<$service> (which can be a numeric port number or a service |
| 607 | or a C<servicename=portnumber> string, or the pathname to a UNIX domain |
769 | name, or a C<servicename=portnumber> string, or the pathname to a UNIX |
| 608 | socket). |
770 | domain socket). |
| 609 | |
771 | |
| 610 | If both C<$host> and C<$port> are names, then this function will use SRV |
772 | If both C<$host> and C<$port> are names, then this function will use SRV |
| 611 | records to locate the real target(s). |
773 | records to locate the real target(s). |
| 612 | |
774 | |
| 613 | In either case, it will create a list of target hosts (e.g. for multihomed |
775 | In either case, it will create a list of target hosts (e.g. for multihomed |
| 614 | hosts or hosts with both IPv4 and IPv6 addresses) and try to connect to |
776 | hosts or hosts with both IPv4 and IPv6 addresses) and try to connect to |
| 615 | each in turn. |
777 | each in turn. |
| 616 | |
778 | |
| 617 | If the connect is successful, then the C<$connect_cb> will be invoked with |
779 | After the connection is established, then the C<$connect_cb> will be |
| 618 | the socket file handle (in non-blocking mode) as first and the peer host |
780 | invoked with the socket file handle (in non-blocking mode) as first and |
| 619 | (as a textual IP address) and peer port as second and third arguments, |
781 | the peer host (as a textual IP address) and peer port as second and third |
| 620 | respectively. The fourth argument is a code reference that you can call |
782 | arguments, respectively. The fourth argument is a code reference that you |
| 621 | if, for some reason, you don't like this connection, which will cause |
783 | can call if, for some reason, you don't like this connection, which will |
| 622 | C<tcp_connect> to try the next one (or call your callback without any |
784 | cause C<tcp_connect> to try the next one (or call your callback without |
| 623 | arguments if there are no more connections). In most cases, you can simply |
785 | any arguments if there are no more connections). In most cases, you can |
| 624 | ignore this argument. |
786 | simply ignore this argument. |
| 625 | |
787 | |
| 626 | $cb->($filehandle, $host, $port, $retry) |
788 | $cb->($filehandle, $host, $port, $retry) |
| 627 | |
789 | |
| 628 | If the connect is unsuccessful, then the C<$connect_cb> will be invoked |
790 | If the connect is unsuccessful, then the C<$connect_cb> will be invoked |
| 629 | without any arguments and C<$!> will be set appropriately (with C<ENXIO> |
791 | without any arguments and C<$!> will be set appropriately (with C<ENXIO> |
| 630 | indicating a DNS resolution failure). |
792 | indicating a DNS resolution failure). |
|
|
793 | |
|
|
794 | The callback will I<never> be invoked before C<tcp_connect> returns, even |
|
|
795 | if C<tcp_connect> was able to connect immediately (e.g. on unix domain |
|
|
796 | sockets). |
| 631 | |
797 | |
| 632 | The file handle is perfect for being plugged into L<AnyEvent::Handle>, but |
798 | The file handle is perfect for being plugged into L<AnyEvent::Handle>, but |
| 633 | can be used as a normal perl file handle as well. |
799 | can be used as a normal perl file handle as well. |
| 634 | |
800 | |
| 635 | Unless called in void context, C<tcp_connect> returns a guard object that |
801 | Unless called in void context, C<tcp_connect> returns a guard object that |
| … | |
… | |
| 674 | or die "unable to connect: $!"; |
840 | or die "unable to connect: $!"; |
| 675 | |
841 | |
| 676 | my $handle; # avoid direct assignment so on_eof has it in scope. |
842 | my $handle; # avoid direct assignment so on_eof has it in scope. |
| 677 | $handle = new AnyEvent::Handle |
843 | $handle = new AnyEvent::Handle |
| 678 | fh => $fh, |
844 | fh => $fh, |
|
|
845 | on_error => sub { |
|
|
846 | warn "error $_[2]\n"; |
|
|
847 | $_[0]->destroy; |
|
|
848 | }, |
| 679 | on_eof => sub { |
849 | on_eof => sub { |
| 680 | undef $handle; # keep it alive till eof |
850 | $handle->destroy; # destroy handle |
| 681 | warn "done.\n"; |
851 | warn "done.\n"; |
| 682 | }; |
852 | }; |
| 683 | |
853 | |
| 684 | $handle->push_write ("GET / HTTP/1.0\015\012\015\012"); |
854 | $handle->push_write ("GET / HTTP/1.0\015\012\015\012"); |
| 685 | |
855 | |
| 686 | $handle->push_read_line ("\015\012\015\012", sub { |
856 | $handle->push_read (line => "\015\012\015\012", sub { |
| 687 | my ($handle, $line) = @_; |
857 | my ($handle, $line) = @_; |
| 688 | |
858 | |
| 689 | # print response header |
859 | # print response header |
| 690 | print "HEADER\n$line\n\nBODY\n"; |
860 | print "HEADER\n$line\n\nBODY\n"; |
| 691 | |
861 | |
| … | |
… | |
| 711 | =cut |
881 | =cut |
| 712 | |
882 | |
| 713 | sub tcp_connect($$$;$) { |
883 | sub tcp_connect($$$;$) { |
| 714 | my ($host, $port, $connect, $prepare) = @_; |
884 | my ($host, $port, $connect, $prepare) = @_; |
| 715 | |
885 | |
| 716 | # see http://cr.yp.to/docs/connect.html for some background |
886 | # see http://cr.yp.to/docs/connect.html for some tricky aspects |
| 717 | # also http://advogato.org/article/672.html |
887 | # also http://advogato.org/article/672.html |
| 718 | |
888 | |
| 719 | my %state = ( fh => undef ); |
889 | my %state = ( fh => undef ); |
| 720 | |
890 | |
| 721 | # name/service to type/sockaddr resolution |
891 | # name/service to type/sockaddr resolution |
| 722 | resolve_sockaddr $host, $port, 0, 0, 0, sub { |
892 | resolve_sockaddr $host, $port, 0, 0, undef, sub { |
| 723 | my @target = @_; |
893 | my @target = @_; |
| 724 | |
894 | |
| 725 | $state{next} = sub { |
895 | $state{next} = sub { |
| 726 | return unless exists $state{fh}; |
896 | return unless exists $state{fh}; |
| 727 | |
897 | |
| 728 | my $target = shift @target |
898 | my $target = shift @target |
| 729 | or do { |
899 | or return (%state = (), _postpone $connect); |
| 730 | %state = (); |
|
|
| 731 | return $connect->(); |
|
|
| 732 | }; |
|
|
| 733 | |
900 | |
| 734 | my ($domain, $type, $proto, $sockaddr) = @$target; |
901 | my ($domain, $type, $proto, $sockaddr) = @$target; |
| 735 | |
902 | |
| 736 | # socket creation |
903 | # socket creation |
| 737 | socket $state{fh}, $domain, $type, $proto |
904 | socket $state{fh}, $domain, $type, $proto |
| … | |
… | |
| 741 | |
908 | |
| 742 | my $timeout = $prepare && $prepare->($state{fh}); |
909 | my $timeout = $prepare && $prepare->($state{fh}); |
| 743 | |
910 | |
| 744 | $timeout ||= 30 if AnyEvent::WIN32; |
911 | $timeout ||= 30 if AnyEvent::WIN32; |
| 745 | |
912 | |
| 746 | $state{to} = AnyEvent->timer (after => $timeout, cb => sub { |
913 | $state{to} = AE::timer $timeout, 0, sub { |
| 747 | $! = &Errno::ETIMEDOUT; |
914 | $! = Errno::ETIMEDOUT; |
| 748 | $state{next}(); |
915 | $state{next}(); |
| 749 | }) if $timeout; |
916 | } if $timeout; |
| 750 | |
917 | |
| 751 | # called when the connect was successful, which, |
918 | # now connect |
| 752 | # in theory, could be the case immediately (but never is in practise) |
919 | if ( |
| 753 | my $connected = sub { |
920 | (connect $state{fh}, $sockaddr) |
| 754 | delete $state{ww}; |
921 | || ($! == Errno::EINPROGRESS # POSIX |
| 755 | delete $state{to}; |
922 | || $! == Errno::EWOULDBLOCK |
| 756 | |
923 | # WSAEINPROGRESS intentionally not checked - it means something else entirely |
|
|
924 | || $! == AnyEvent::Util::WSAEINVAL # not convinced, but doesn't hurt |
|
|
925 | || $! == AnyEvent::Util::WSAEWOULDBLOCK) |
|
|
926 | ) { |
|
|
927 | $state{ww} = AE::io $state{fh}, 1, sub { |
| 757 | # we are connected, or maybe there was an error |
928 | # we are connected, or maybe there was an error |
| 758 | if (my $sin = getpeername $state{fh}) { |
929 | if (my $sin = getpeername $state{fh}) { |
| 759 | my ($port, $host) = unpack_sockaddr $sin; |
930 | my ($port, $host) = unpack_sockaddr $sin; |
| 760 | |
931 | |
|
|
932 | delete $state{ww}; delete $state{to}; |
|
|
933 | |
| 761 | my $guard = guard { |
934 | my $guard = guard { %state = () }; |
| 762 | %state = (); |
|
|
| 763 | }; |
|
|
| 764 | |
935 | |
| 765 | $connect->($state{fh}, format_address $host, $port, sub { |
936 | $connect->(delete $state{fh}, format_address $host, $port, sub { |
| 766 | $guard->cancel; |
937 | $guard->cancel; |
|
|
938 | $state{next}(); |
|
|
939 | }); |
|
|
940 | } else { |
|
|
941 | if ($! == Errno::ENOTCONN) { |
|
|
942 | # dummy read to fetch real error code if !cygwin |
|
|
943 | sysread $state{fh}, my $buf, 1; |
|
|
944 | |
|
|
945 | # cygwin 1.5 continously reports "ready' but never delivers |
|
|
946 | # an error with getpeername or sysread. |
|
|
947 | # cygwin 1.7 only reports readyness *once*, but is otherwise |
|
|
948 | # the same, which is atcually more broken. |
|
|
949 | # Work around both by using unportable SO_ERROR for cygwin. |
|
|
950 | $! = (unpack "l", getsockopt $state{fh}, Socket::SOL_SOCKET(), Socket::SO_ERROR()) || Errno::EAGAIN |
|
|
951 | if AnyEvent::CYGWIN && $! == Errno::EAGAIN; |
|
|
952 | } |
|
|
953 | |
|
|
954 | return if $! == Errno::EAGAIN; # skip spurious wake-ups |
|
|
955 | |
|
|
956 | delete $state{ww}; delete $state{to}; |
|
|
957 | |
| 767 | $state{next}(); |
958 | $state{next}(); |
| 768 | }); |
959 | } |
| 769 | } else { |
|
|
| 770 | # dummy read to fetch real error code |
|
|
| 771 | sysread $state{fh}, my $buf, 1 if $! == &Errno::ENOTCONN; |
|
|
| 772 | $state{next}(); |
|
|
| 773 | } |
960 | }; |
| 774 | }; |
|
|
| 775 | |
|
|
| 776 | # now connect |
|
|
| 777 | if (connect $state{fh}, $sockaddr) { |
|
|
| 778 | $connected->(); |
|
|
| 779 | } elsif ($! == &Errno::EINPROGRESS # POSIX |
|
|
| 780 | || $! == &Errno::EWOULDBLOCK |
|
|
| 781 | # WSAEINPROGRESS intentionally not checked - it means something else entirely |
|
|
| 782 | || $! == AnyEvent::Util::WSAEINVAL # not convinced, but doesn't hurt |
|
|
| 783 | || $! == AnyEvent::Util::WSAEWOULDBLOCK) { |
|
|
| 784 | $state{ww} = AnyEvent->io (fh => $state{fh}, poll => 'w', cb => $connected); |
|
|
| 785 | } else { |
961 | } else { |
| 786 | $state{next}(); |
962 | $state{next}(); |
| 787 | } |
963 | } |
| 788 | }; |
964 | }; |
| 789 | |
965 | |
| 790 | $! = &Errno::ENXIO; |
966 | $! = Errno::ENXIO; |
| 791 | $state{next}(); |
967 | $state{next}(); |
| 792 | }; |
968 | }; |
| 793 | |
969 | |
| 794 | defined wantarray && guard { %state = () } |
970 | defined wantarray && guard { %state = () } |
| 795 | } |
971 | } |
| … | |
… | |
| 854 | }, sub { |
1030 | }, sub { |
| 855 | my ($fh, $thishost, $thisport) = @_; |
1031 | my ($fh, $thishost, $thisport) = @_; |
| 856 | warn "bound to $thishost, port $thisport\n"; |
1032 | warn "bound to $thishost, port $thisport\n"; |
| 857 | }; |
1033 | }; |
| 858 | |
1034 | |
|
|
1035 | Example: bind a server on a unix domain socket. |
|
|
1036 | |
|
|
1037 | tcp_server "unix/", "/tmp/mydir/mysocket", sub { |
|
|
1038 | my ($fh) = @_; |
|
|
1039 | }; |
|
|
1040 | |
| 859 | =cut |
1041 | =cut |
| 860 | |
1042 | |
| 861 | sub tcp_server($$$;$) { |
1043 | sub tcp_server($$$;$) { |
| 862 | my ($host, $service, $accept, $prepare) = @_; |
1044 | my ($host, $service, $accept, $prepare) = @_; |
| 863 | |
1045 | |
| … | |
… | |
| 907 | $len ||= 128; |
1089 | $len ||= 128; |
| 908 | |
1090 | |
| 909 | listen $state{fh}, $len |
1091 | listen $state{fh}, $len |
| 910 | or Carp::croak "listen: $!"; |
1092 | or Carp::croak "listen: $!"; |
| 911 | |
1093 | |
| 912 | $state{aw} = AnyEvent->io (fh => $state{fh}, poll => 'r', cb => sub { |
1094 | $state{aw} = AE::io $state{fh}, 0, sub { |
| 913 | # this closure keeps $state alive |
1095 | # this closure keeps $state alive |
| 914 | while (my $peer = accept my $fh, $state{fh}) { |
1096 | while ($state{fh} && (my $peer = accept my $fh, $state{fh})) { |
| 915 | fh_nonblocking $fh, 1; # POSIX requires inheritance, the outside world does not |
1097 | fh_nonblocking $fh, 1; # POSIX requires inheritance, the outside world does not |
| 916 | |
1098 | |
| 917 | my ($service, $host) = unpack_sockaddr $peer; |
1099 | my ($service, $host) = unpack_sockaddr $peer; |
| 918 | $accept->($fh, format_address $host, $service); |
1100 | $accept->($fh, format_address $host, $service); |
| 919 | } |
1101 | } |
| 920 | }); |
1102 | }; |
| 921 | |
1103 | |
| 922 | defined wantarray |
1104 | defined wantarray |
| 923 | ? guard { %state = () } # clear fh and watcher, which breaks the circular dependency |
1105 | ? guard { %state = () } # clear fh and watcher, which breaks the circular dependency |
| 924 | : () |
1106 | : () |
| 925 | } |
1107 | } |
