Login or Register to Ask a Question and Join Our Community


Socket programming : Accept return 0.


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Socket programming : Accept return 0.
# 8  
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.
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to write a shell script to automatically accept return key with out user intervention?

Hi Friends, i am creating a shell script which is accepting file name as input parameter from Java and invoking finacle service. The service will accpet text file,B2k_session id,etc and upload the text file data in finacle database. My shell script looks like this:- #! /bin/ksh... (2 Replies)
Discussion started by: vadlamudy
2 Replies

2. Programming

socket programming

how to include socket.h in visual studio 2005.. (2 Replies)
Discussion started by: asd123
2 Replies

3. Programming

socket accept() keeps looping

I'm using C/ C++ with gcc on Linux. I've a server socket where accept() is called on the socket inside a while() loop. The problem I am facing is that the first call to accept is blocking (i.e., the program waits for the first connection) but as soon as I fork afterwards (so that the child process... (2 Replies)
Discussion started by: jaywalker
2 Replies

4. Programming

Help with socket programming in C

hi guys i got this code trying to make connection between the server and multi clients but when i do ./server i got message server waiting then when i run ./client it says client 1 nosuch file i dont know whats that should i use any argument plz help how to compile and run and whats the expected... (1 Reply)
Discussion started by: kedah160
1 Replies

5. UNIX for Advanced & Expert Users

socket programming

can we send udp message to a destination ip address .. without having an ip address configured in our machine using recvfrom ? (2 Replies)
Discussion started by: Gopi Krishna P
2 Replies

6. IP Networking

Port number of socket returned by accept()

Hi, I typed a few tcp/ip client/server examples from a book and it works - sort of - but I noticed something strange. When I run my server I set it to use port 3001 and the client uses the same port to connect to server. They succeed, but the server prints something that doesn't really make much... (0 Replies)
Discussion started by: idelovski
0 Replies

7. Programming

Please help! accept function problems in Socket programming

Hi, I have a client-server socket program. It has been working fine for over a year, but recently it started to show strange behavior.:confused: After the server program runs for a while, it will show in the top command saying it is using lots of CPU, MEM. I assume it means the server code is... (1 Reply)
Discussion started by: natxie
1 Replies

8. IP Networking

socket programming

my system is a stand alone system... i want to try doing socket porgramming..ihave heard that this is usually done during testing... how can i do that....? (6 Replies)
Discussion started by: damn_bkb
6 Replies

9. Programming

Socket Programming socket

Hello, I actually try to make client-server program. I'm using SCO OpenServer Release 5.0.0 and when I try to compile my code (by TELNET) I've got this error : I'm just using this simple code : and I get the same error if I use : If someone can help me, Thanks (2 Replies)
Discussion started by: soshell
2 Replies

10. Programming

Socket Programming

Dear Reader, Is there any way to check up socket status other than 'netstatus ' Thanks in advance, (1 Reply)
Discussion started by: joseph_shibu
1 Replies
Login or Register to Ask a Question
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)

Featured Tech Videos