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Full Discussion: read function
Top Forums UNIX for Dummies Questions & Answers read function Post 19562 by rwb1959 on Friday 12th of April 2002 04:55:47 PM
Old 04-12-2002
It would be better if we could see your code (excerpts) that
setup and do the message exchange. There are some operations
in which you must interleave reads and writes but if you wrote
some sort of socket (UNIX or INET) communications, this should
not be an issue. If you can't post code excerpts, try to give
as much detail about what you are doing and how you are doing
it. Maybe someone can help.
 

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Socket(3pm)						User Contributed Perl Documentation					       Socket(3pm)

NAME
Coro::Socket - non-blocking socket-I/O SYNOPSIS
use Coro::Socket; # listen on an ipv4 socket my $socket = new Coro::Socket PeerHost => "localhost", PeerPort => 'finger'; # listen on any other type of socket my $socket = Coro::Socket->new_from_fh (IO::Socket::UNIX->new Local => "/tmp/socket", Type => SOCK_STREAM, ); DESCRIPTION
This module is an AnyEvent user, you need to make sure that you use and run a supported event loop. This module implements socket-handles in a coroutine-compatible way, that is, other coroutines can run while reads or writes block on the handle. See Coro::Handle, especially the note about prefering method calls. IPV6 WARNING This module was written to imitate the IO::Socket::INET API, and derive from it. Since IO::Socket::INET does not support IPv6, this module does neither. Therefore it is not recommended to use Coro::Socket in new code. Instead, use AnyEvent::Socket and Coro::Handle, e.g.: use Coro; use Coro::Handle; use AnyEvent::Socket; # use tcp_connect from AnyEvent::Socket # and call Coro::Handle::unblock on it. tcp_connect "www.google.com", 80, Coro::rouse_cb; my $fh = unblock +(Coro::rouse_wait)[0]; # now we have a perfectly thread-safe socket handle in $fh print $fh "GET / HTTP/1.015121512"; local $/; print <$fh>; Using "AnyEvent::Socket::tcp_connect" gives you transparent IPv6, multi-homing, SRV-record etc. support. For listening sockets, use "AnyEvent::Socket::tcp_server". $fh = new Coro::Socket param => value, ... Create a new non-blocking tcp handle and connect to the given host and port. The parameter names and values are mostly the same as for IO::Socket::INET (as ugly as I think they are). The parameters officially supported currently are: "ReuseAddr", "LocalPort", "LocalHost", "PeerPort", "PeerHost", "Listen", "Timeout", "SO_RCVBUF", "SO_SNDBUF". $fh = new Coro::Socket PeerHost => "localhost", PeerPort => 'finger'; AUTHOR
Marc Lehmann <schmorp@schmorp.de> http://home.schmorp.de/ perl v5.14.2 2012-04-13 Socket(3pm)
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