int tcp_open_client	(	char *	node,
		int	port
	)

Definition at line 98 of file test_tcp.c.

References closesock, TCP_RCV_BUF_SIZE, TCP_SND_BUF_SIZE, and ushort.

{
        /* Create connection: create and initialize socket stuff. Try
         * and make a connection with the server.
         */
        struct sockaddr_in sockname;
        struct hostent *host;
        int path, val, ret_code, ret;

#ifdef WIN32
        init_sock();
#endif
        if( (host = gethostbyname(node)) == (struct hostent *)0 ) 
        {
                return(0);
        }

        if( (path = socket(AF_INET, SOCK_STREAM, 0)) == -1 ) 
        {
                perror("socket");
                return(0);
        }

        val = 1;
      
        if ((ret_code = setsockopt(path, IPPROTO_TCP, TCP_NODELAY, 
                        (char*)&val, sizeof(val))) == -1 ) 
        {
#ifdef DEBUG
                printf("Couln't set TCP_NODELAY\n");
#endif
                closesock(path); 
                return(0);
        }

        val = TCP_SND_BUF_SIZE;      
        if ((ret_code = setsockopt(path, SOL_SOCKET, SO_SNDBUF, 
                        (char*)&val, sizeof(val))) == -1 ) 
        {
#ifdef DEBUG
                printf("Couln't set SO_SNDBUF\n");
#endif
                closesock(path); 
                return(0);
        }

        val = TCP_RCV_BUF_SIZE;
        if ((ret_code = setsockopt(path, SOL_SOCKET, SO_RCVBUF, 
                        (char*)&val, sizeof(val))) == -1 ) 
        {
#ifdef DEBUG
                printf("Couln't set SO_RCVBUF\n");
#endif
                closesock(path); 
                return(0);
        }

#if defined(__linux__) && !defined (darwin)
        val = 2;
        if ((ret_code = setsockopt(path, IPPROTO_TCP, TCP_SYNCNT, 
                        (char*)&val, sizeof(val))) == -1 ) 
        {
#ifdef DEBUG
                printf("Couln't set TCP_SYNCNT\n");
#endif
        }
#endif

        sockname.sin_family = PF_INET;
        sockname.sin_addr = *((struct in_addr *) host->h_addr);
        sockname.sin_port = htons((ushort) port); /* port number to send to */
        while((ret = connect(path, (struct sockaddr*)&sockname, sizeof(sockname))) == -1 )
        {
                if(errno != EINTR)
                {
                        closesock(path);
                        return(0);
                }
        }
        return(path);
}