02-26-2010
Thanks abu ... is it possible to listen for broadcast as well as unicast messages.. if so how to do that ?
10 More Discussions You Might Find Interesting
1. 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
2. Programming
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
3. Programming
Can anyone plz me. I need a sample code for the following description.
Its urgent.
It is C/Socket program with the following descriptions:
NAME
coreadServer - Concurrent Readers Server.
coreadClient - Concurrent Readers Client.
SYNOPSIS
coreadServer <OutputFile>
coreadClient <n>... (1 Reply)
Discussion started by: priya.vmr
1 Replies
4. IP Networking
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
5. IP Networking
Hello Everyone
Iam working on tcp/ip programming.with some time interval server has to send data.client has to close the connection and to open the connection between the time interval.this is the scenario
when iam closing the connection in client side the connection terminates.how to... (1 Reply)
Discussion started by: sureshvaikuntam
1 Replies
6. Programming
i m using sockets for setting up a connection between a server and a client.
When the clients gets connected to the server, its ip is conveyed to the server through one of the predefined structures in c library...
i save this ip address in an array....1st client's ip address goes to the zeroth... (1 Reply)
Discussion started by: abmxla007
1 Replies
7. Programming
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
8. UNIX for Dummies Questions & Answers
in socket programming how can i : Create for example 3 blank files, namely: server, client, network
•Server: act as servers/provider, will receive all requests from different client
•Client: requesters
•Network: middle-layer of communication between server & client
any tips or... (6 Replies)
Discussion started by: kedah160
6 Replies
9. Programming
Hi everyone,
I'm new to this forum. I'm working on new project for last few days and this forum already helped me on
couple of occasions. I don't have any prior experience with network programming so I'll appreciate any advise given.
I'm trying to do the following:
1. open user... (2 Replies)
Discussion started by: _thomas
2 Replies
10. Programming
how to include socket.h in visual studio 2005.. (2 Replies)
Discussion started by: asd123
2 Replies
UDP(4P) UDP(4P)
NAME
udp - Internet User Datagram Protocol
SYNOPSIS
#include <sys/socket.h>
#include <netinet/in.h>
s = socket(AF_INET, SOCK_DGRAM, 0);
DESCRIPTION
UDP is a simple, unreliable datagram protocol which is used to support the SOCK_DGRAM abstraction for the Internet protocol family. UDP
sockets are connectionless, and are normally used with the sendto and recvfrom calls, though the connect(2) call may also be used to fix
the destination for future packets (in which case the recv(2) or read(2) and send(2) or write(2) system calls may be used).
UDP address formats are identical to those used by TCP. In particular UDP provides a port identifier in addition to the normal Internet
address format. Note that the UDP port space is separate from the TCP port space (i.e. a UDP port may not be "connected" to a TCP port).
In addition broadcast packets may be sent (assuming the underlying network supports this) by using a reserved "broadcast address"; this
address is network interface dependent.
Options at the IP transport level may be used with UDP; see ip(4P).
DIAGNOSTICS
A socket operation may fail with one of the following errors returned:
[EISCONN] when trying to establish a connection on a socket which already has one, or when trying to send a datagram with the destina-
tion address specified and the socket is already connected;
[ENOTCONN] when trying to send a datagram, but no destination address is specified, and the socket hasn't been connected;
[ENOBUFS] when the system runs out of memory for an internal data structure;
[EADDRINUSE] when an attempt is made to create a socket with a port which has already been allocated;
[EADDRNOTAVAIL]
when an attempt is made to create a socket with a network address for which no network interface exists.
SEE ALSO
getsockopt(2), recv(2), send(2), socket(2), intro(4N), inet(4F), ip(4P)
4.2 Berkeley Distribution May 16, 1986 UDP(4P)