C++ (Cpp) probe_max_sock_buff Exemples

Exemple #1

Fichier : net_tcp.c Projet : Danfx/opensips

/*! \brief Set all socket/fd options:  disable nagle, tos lowdelay,
 * non-blocking
 * \return -1 on error */
int tcp_init_sock_opt(int s)
{
	int flags;
	int optval;

#ifdef DISABLE_NAGLE
	flags=1;
	if ( (tcp_proto_no!=-1) && (setsockopt(s, tcp_proto_no , TCP_NODELAY,
					&flags, sizeof(flags))<0) ){
		LM_WARN("could not disable Nagle: %s\n", strerror(errno));
	}
#endif
	/* tos*/
	optval = tos;
	if (setsockopt(s, IPPROTO_IP, IP_TOS, (void*)&optval,sizeof(optval)) ==-1){
		LM_WARN("setsockopt tos: %s\n",	strerror(errno));
		/* continue since this is not critical */
	}

	if (probe_max_sock_buff(s,1,MAX_SEND_BUFFER_SIZE,BUFFER_INCREMENT)) {
		LM_WARN("setsockopt tcp snd buff: %s\n",	strerror(errno));
		/* continue since this is not critical */
	}

	init_sock_keepalive(s);

	/* non-blocking */
	flags=fcntl(s, F_GETFL);
	if (flags==-1){
		LM_ERR("fcntl failed: (%d) %s\n", errno, strerror(errno));
		goto error;
	}
	if (fcntl(s, F_SETFL, flags|O_NONBLOCK)==-1){
		LM_ERR("set non-blocking failed: (%d) %s\n", errno, strerror(errno));
		goto error;
	}
	return 0;
error:
	return -1;
}

Exemple #2

int tcp_init(struct socket_info* sock_info)
{
	union sockaddr_union* addr;
	int optval;
#ifdef DISABLE_NAGLE
	int flag;
	struct protoent* pe;

	if (tcp_proto_no==-1){ /* if not already set */
		pe=getprotobyname("tcp");
		if (pe==0){
			LM_ERR("could not get TCP protocol number\n");
			tcp_proto_no=-1;
		}else{
			tcp_proto_no=pe->p_proto;
		}
	}
#endif
	
	addr=&sock_info->su;
	/* sock_info->proto=PROTO_TCP; */
	if (init_su(addr, &sock_info->address, sock_info->port_no)<0){
		LM_ERR("could no init sockaddr_union\n");
		goto error;
	}
	sock_info->socket=socket(AF2PF(addr->s.sa_family), SOCK_STREAM, 0);
	if (sock_info->socket==-1){
		LM_ERR("socket: %s\n", strerror(errno));
		goto error;
	}
#ifdef DISABLE_NAGLE
	flag=1;
	if ( (tcp_proto_no!=-1) &&
		 (setsockopt(sock_info->socket, tcp_proto_no , TCP_NODELAY,
					 &flag, sizeof(flag))<0) ){
		LM_ERR("could not disable Nagle: %s\n",	strerror(errno));
	}
#endif


#if  !defined(TCP_DONT_REUSEADDR) 
	/* Stevens, "Network Programming", Section 7.5, "Generic Socket
	 * Options": "...server started,..a child continues..on existing
	 * connection..listening server is restarted...call to bind fails
	 * ... ALL TCP servers should specify the SO_REUSEADDRE option 
	 * to allow the server to be restarted in this situation
	 *
	 * Indeed, without this option, the server can't restart.
	 *   -jiri
	 */
	optval=1;
	if (setsockopt(sock_info->socket, SOL_SOCKET, SO_REUSEADDR,
				(void*)&optval, sizeof(optval))==-1) {
		LM_ERR("setsockopt %s\n", strerror(errno));
		goto error;
	}
#endif
	/* tos */
	optval = tos;
	if (setsockopt(sock_info->socket, IPPROTO_IP, IP_TOS, (void*)&optval, 
				sizeof(optval)) ==-1){
		LM_WARN("setsockopt tos: %s\n", strerror(errno));
		/* continue since this is not critical */
	}

	if (probe_max_sock_buff(sock_info->socket,1,MAX_SEND_BUFFER_SIZE,
				BUFFER_INCREMENT))
	{
		LM_WARN("setsockopt tcp snd buff: %s\n",	strerror(errno));
		/* continue since this is not critical */
	}

	if (bind(sock_info->socket, &addr->s, sockaddru_len(*addr))==-1){
		LM_ERR("bind(%x, %p, %d) on %s:%d : %s\n",
 				sock_info->socket, &addr->s, 
 				(unsigned)sockaddru_len(*addr),
 				sock_info->address_str.s,
				sock_info->port_no,
 				strerror(errno));
		goto error;
	}
	if (listen(sock_info->socket, 10)==-1){
		LM_ERR("listen(%x, %p, %d) on %s: %s\n",
				sock_info->socket, &addr->s, 
				(unsigned)sockaddru_len(*addr),
				sock_info->address_str.s,
				strerror(errno));
		goto error;
	}
	
	return 0;
error:
	if (sock_info->socket!=-1){
		close(sock_info->socket);
		sock_info->socket=-1;
	}
	return -1;
}