On Mon, Sep 21, 2009 at 6:45 AM, Vlad Yasevich
<vladislav.yasevich@xxxxxx> wrote:
> colin wen wrote:
>> I wrote a simple sctp server and client to test sctp in linux.
>> after client call connect, server accept return a socket,
>> but after client call send(fd, "hello", 5, 0) server's recv call
>> does not return, server's recv return after client close and
>> re-connect to server.
>> I wonder if someone could tell me what's the problem.
>> Thanks,
>
>
> What kernel version are you using?
>
> Can you post the source to your client and server?
>
> -vlad
>
I am using 2.6.28-13-generic (debian-5.0) and also
tested the kernel 2.6.31 downloaded from kernel.org.
Please find the following test code.
Client:
------------------------------------------------------------
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <linux/in.h>
int main()
{
int fd;
struct sockaddr_in addr;
int len;
fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (fd < 0) {
printf("socket failed\n");
return -1;
}
printf("socket ok\n");
addr.sin_family = AF_INET;
addr.sin_port = htons(5060);
addr.sin_addr.s_addr = inet_addr("172.16.80.234");
if (connect(fd, (struct sockaddr*)&addr, sizeof addr)) {
printf("connect failed\n");
return -1;
}
printf("connect \n");
len = send(fd, "hello", 5, 0);
printf("send %d\n", len);
close(fd);
return 0;
}
Server:
--------------------------------------------------------------------
#include <stdio.h>
#include <string.h>
#include <sys/socket.h>
#include <linux/in.h>
int main()
{
int fd, fd_client;
struct sockaddr_in addr;
char buf[128];
int len;
fd = socket(AF_INET, SOCK_STREAM, IPPROTO_SCTP);
if (fd < 0) {
printf("socket failed\n");
return -1;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(5060);
addr.sin_addr.s_addr = INADDR_ANY;
if (bind(fd, (struct sockaddr*)&addr, sizeof addr)) {
printf("bind failed\n");
return -1;
}
if (listen(fd, 10)) {
printf("listen failed\n");
return -1;
}
while (1) {
len = sizeof(addr);
fd_client = accept(fd, (struct sockaddr*)&addr, &len);
if (fd_client < 0) {
printf("accept failed\n");
break;
}
printf("accept %d\n", fd_client);
while(1) {
len = recv(fd_client, buf, sizeof(buf), 0);
if (len <= 0)
break;
buf[len] = 0;
printf("%s\n", buf);
}
close(fd_client);
}
return 0;
}
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