Socket programming : Accept return 0.


 
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Old 10-17-2007
Quote:
Originally Posted by abc.working
char *buf;
//the below recv is non blocking, it doesn't wait for client to send.
recv(s_client,buf,100,0);
1. are you allocating buf first?

2. if the socket is non blocking you must use select or poll to notify you when to read/write/accept etc.
 
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NetSDS::App::SMTPD(3pm) 				User Contributed Perl Documentation				   NetSDS::App::SMTPD(3pm)

NAME
NetSDS::App::SMTPD SYNOPSIS
use NetSDS::App::SMTPD Packages NetSDS::App::SMTPD::Socket Needs for work with socket. This module is a parent for NetSDS::App::SMTPD and NetSDS::App::SMTPD::Client and a child of a NetSDS::APP ITEMS create_socket Creating a simple socket which could be transformed into a listening in NetSDS::App::SMTPD and could be used in NetSDS::App::SMTPD::Client for accept connection can_read This method uses for making a timeout before connections to the server: if there is no connections to accept, program would be just waiting in select while the connection appeared. close_socket Close socket NetSDS::App::SMTPD::Client Provides the smtp protocol bu using Net::Server::Mail::SMTP. Had attributes: smtp - an object of Net::Server::Mail::SMTP, ip - ip of the remote host, headers - ref hash with headers of a message, msg - a body of a message. ITEMS set_callback and process All that subs do - its only call the methods of a Net::Server::Mail::SMTP with the same name. get_mail In this sub we parse message and set headers of the object and message body. This sub is call as a callback on event DATA get_header and get_msg Get methods that make you access to a header of a msg and message body. Example: $client->get_header('FROM') or $client->get_header('to'); NetSDS::App::SMTPD This module init a smtp-server. ITEMS create_socket Init a listening socket by creating a simple socket Super::create_socket and make it listening. data Takes - a message that has been received, parses them and prepare the structure of headers, body for next actions accept Waiting for an smtp connection and that accept it. data process Example #!/usr/bin/env perl use strict; use warnings; Receiver->run( infinite => 1, debug => 1, verbose => 1, conf_file => '../conf/mts-receiver.conf', ); 1; package Receiver; use base 'NetSDS::App::SMTPD'; sub process { my $self = shift; my $client = $self->SUPER::process; #do something with msg; my $from = $client->get_header('from'); my $msg = $client->get_msg; ..... return $self; }; or you could reinit process like this: sub process { my $self = shift; my $client = $self->accept; return unless $client; $client->process; #do something ...... $client->close; return $self; }; AUTHOR
Yana Kornienko <yana@netstyle.com.ua> perl v5.10.1 2010-04-28 NetSDS::App::SMTPD(3pm)