Date: Sat, 3 Dec 2011 08:29:37 +0100 From: =?iso-8859-1?Q?Michael_T=FCxen?= <Michael.Tuexen@lurchi.franken.de> To: jyl_2006 <yilinjing2006@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: the return value of sctp_connectx do not match any error Message-ID: <C6A45788-E86B-4825-A4A6-2859B74D110B@lurchi.franken.de> In-Reply-To: <1322888085250-5043901.post@n5.nabble.com> References: <1322834879026-5041952.post@n5.nabble.com> <0D6FA7F2-1462-44EF-98F4-3B6AFC856757@lurchi.franken.de> <1322888085250-5043901.post@n5.nabble.com>
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On Dec 3, 2011, at 5:54 AM, jyl_2006 wrote:
> First, I use the return value of sctp_connectx, and I do not use errno, so
> the return value does not match the errors gived in manual. Now,I know it is
> my mistake.
>
> However, I write a simple program to test sctp_connectx, it still show
> error.The errno is "EINVAL", I am sure that the paraments are set properly.
>
> One more thing, I also test these programs in other platform, the result is
> OK, but under FreeBSD, it does not work.
In BSD you need to set the sin_len field of the sockaddr_in structure.
So if you add
server_ipaddress . sin_len = sizeof(struct sockaddr_in);
the client works (at least it does for me).
You should do the same for the server...
Please let me know if your problem persists.
Best regards
Michael
>
> /*Here are programs.*/
>
> #include <sys/errno.h>
> #include <stdio.h>
> #include <string.h>
>
> #include <netinet/in.h>
> #include <netinet/sctp.h>
> #include <sys/types.h>
> #include <sys/socket.h>
> #define PORT 63000
> #define MTU 1500
>
> int main()
> {
> int _listenfd, _sctp_socket, _connfd;
> struct sockaddr_in servaddr;
> int ret, msg_flag;
> char message[MTU];
> struct sctp_sndrcvinfo sndrcvinfo;
>
> _sctp_socket = socket( AF_INET , SOCK_SEQPACKET , IPPROTO_SCTP );
>
> bzero( (void *)&servaddr, sizeof(servaddr) );
> servaddr.sin_family = AF_INET;
> servaddr.sin_addr.s_addr = htonl( INADDR_ANY );
> servaddr.sin_port = htons(PORT);
>
> ret = bind(_sctp_socket, (struct sockaddr *)&servaddr, sizeof(servaddr));
> if( ret )
> {
> printf("Server bind error" );
> }
>
> _listenfd= listen(_sctp_socket, 10);
> if(0 != _listenfd)
> {
> printf("Server listen error" );
> }
>
> ret = sctp_recvmsg(_sctp_socket, (void *)message , MTU, NULL, 0 ,
> &sndrcvinfo , &msg_flag);
> if(ret >= 0)
> {
> printf("Receive message:%s", message);
> }
> }
>
>
> #include <sys/errno.h>
> #include <stdio.h>
> #include <string.h>
>
> #include <netinet/in.h>
> #include <netinet/sctp.h>
> #include <sys/types.h>
> #include <sys/socket.h>
> #define PORT 63000
>
> int main()
> {
> int _sctp_socket, _sctp_associd, ret;
> _sctp_socket = socket( AF_INET , SOCK_SEQPACKET , IPPROTO_SCTP );
>
> struct sockaddr_in server_ipaddress;
> server_ipaddress . sin_family = AF_INET;
> server_ipaddress . sin_port = htons(PORT);
> server_ipaddress . sin_addr.s_addr = inet_addr("127.0.0.1");
>
> ret = sctp_connectx(_sctp_socket , (struct sockaddr*) &server_ipaddress ,
> 1, &_sctp_associd);
> if( ret < 0)
> {
> printf("sctp_connectx error");
> }
> }
>
>
>
>
>
>
> --
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