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* Problem with sockets an 2.6.21-rc5 kernel
@ 2007-03-26 21:03 Jose Alberto Reguero
  2007-03-27 13:12 ` Evgeniy Polyakov
  0 siblings, 1 reply; 7+ messages in thread
From: Jose Alberto Reguero @ 2007-03-26 21:03 UTC (permalink / raw)
  To: netdev

[-- Attachment #1: Type: text/plain, Size: 444 bytes --]

I had two python programs, server.py and client.py(attached)

With server.py in  a kernel 2.6.21-rc5 x86_64 and client.py in the same 
machine,  server.py get the message.

With server.py in  a kerner 2.6.21-rc5 x86_64 and client.py in another 
machine, server.py don't get the message.

The same with the programs in c(attached).

With kernel 2.6.20.3 the programs work well.

There are something wrong in the programs?

Thanks.

Jose Alberto

[-- Attachment #2: client.py --]
[-- Type: application/x-python, Size: 212 bytes --]

[-- Attachment #3: client.c --]
[-- Type: text/x-csrc, Size: 499 bytes --]

#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>

main()
{
	int sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
	struct sockaddr_in ClientAddr;
	memset(&ClientAddr, 0, sizeof(ClientAddr));
	ClientAddr.sin_family = AF_INET;
	ClientAddr.sin_addr.s_addr = inet_addr("227.234.253.9");
	int port = 15922;
	ClientAddr.sin_port = htons((short) port);
	char str[] = "Hello, world";
	sendto(sock, str, strlen(str), 0, (struct sockaddr *)&ClientAddr, sizeof(ClientAddr));
	close(sock);
}

[-- Attachment #4: server.c --]
[-- Type: text/x-csrc, Size: 1002 bytes --]

#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdio.h>

main()
{
        struct sockaddr_in ServerAddr;
        int sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
        int reuse = 1;
        setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(int));
        memset(&ServerAddr, 0, sizeof(ServerAddr));
        ServerAddr.sin_family = AF_INET;
        ServerAddr.sin_addr.s_addr = htonl(INADDR_ANY);
        int port = 15922;
        ServerAddr.sin_port = htons((short) port);
        bind(sock, (struct sockaddr *)&ServerAddr, sizeof(ServerAddr));
        struct ip_mreq mreq;
	memset(&mreq, 0, sizeof(mreq));
        mreq.imr_multiaddr.s_addr = inet_addr("227.234.253.9");
	mreq.imr_interface.s_addr = htonl(INADDR_ANY);
        setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq));
        char str[100];
	memset(&str, 0, sizeof(str));
        recv(sock, str, 100, 0);
        printf(":%s:\n", str);
	close (sock);
}

[-- Attachment #5: server.py --]
[-- Type: application/x-python, Size: 555 bytes --]

^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2007-03-27 22:09 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2007-03-26 21:03 Problem with sockets an 2.6.21-rc5 kernel Jose Alberto Reguero
2007-03-27 13:12 ` Evgeniy Polyakov
2007-03-27 14:29   ` Jose Alberto Reguero
2007-03-27 14:46     ` Evgeniy Polyakov
2007-03-27 15:41       ` Jose Alberto Reguero
2007-03-27 18:30         ` Jose Alberto Reguero
2007-03-27 22:06           ` Jose Alberto Reguero

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