static int uh_socket_bind(
fd_set *serv_fds, int *max_fd, const char *host, const char *port,
struct addrinfo *hints, int do_tls, struct config *conf
) {
int sock = -1;
int yes = 1;
int status;
int bound = 0;
int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt;
struct listener *l = NULL;
struct addrinfo *addrs = NULL, *p = NULL;
if( (status = getaddrinfo(host, port, hints, &addrs)) != 0 )
{
fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(status));
}
/* try to bind a new socket to each found address */
for( p = addrs; p; p = p->ai_next )
{
/* get the socket */
if( (sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1 )
{
perror("socket()");
goto error;
}
/* "address already in use" */
if( setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) )
{
perror("setsockopt()");
goto error;
}
/* TCP keep-alive */
if( conf->tcp_keepalive > 0 )
{
tcp_ka_idl = 1;
tcp_ka_cnt = 3;
tcp_ka_int = conf->tcp_keepalive;
if( setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) ||
setsockopt(sock, SOL_TCP, TCP_KEEPIDLE, &tcp_ka_idl, sizeof(tcp_ka_idl)) ||
setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int)) ||
setsockopt(sock, SOL_TCP, TCP_KEEPCNT, &tcp_ka_cnt, sizeof(tcp_ka_cnt)) )
{
fprintf(stderr, "Notice: Unable to enable TCP keep-alive: %s\n",
strerror(errno));
}
}
/* required to get parallel v4 + v6 working */
if( p->ai_family == AF_INET6 )
{
if( setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) == -1 )
{
perror("setsockopt()");
goto error;
}
}
/* bind */
if( bind(sock, p->ai_addr, p->ai_addrlen) == -1 )
{
perror("bind()");
goto error;
}
/* listen */
if( listen(sock, UH_LIMIT_CLIENTS) == -1 )
{
perror("listen()");
goto error;
}
/* add listener to global list */
if( ! (l = uh_listener_add(sock, conf)) )
{
fprintf(stderr, "uh_listener_add(): Failed to allocate memory\n");
goto error;
}
#ifdef HAVE_TLS
/* init TLS */
l->tls = do_tls ? conf->tls : NULL;
#endif
/* add socket to server fd set */
FD_SET(sock, serv_fds);
fd_cloexec(sock);
*max_fd = max(*max_fd, sock);
bound++;
continue;
error:
if( sock > 0 )
close(sock);
}
freeaddrinfo(addrs);
return bound;
}
static int uh_socket_bind(
fd_set *serv_fds, int *max_fd, const char *host, const char *port,
struct addrinfo *hints, int do_tls, struct config *conf
) {
int sock = -1;
int yes = 1;
int status;
int bound = 0;
struct listener *l = NULL;
struct addrinfo *addrs = NULL, *p = NULL;
if( (status = getaddrinfo(host, port, hints, &addrs)) != 0 )
{
fprintf(stderr, "getaddrinfo(): %s\n", gai_strerror(status));
}
/* try to bind a new socket to each found address */
for( p = addrs; p; p = p->ai_next )
{
/* get the socket */
if( (sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1 )
{
perror("socket()");
goto error;
}
/* "address already in use" */
if( setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(yes)) == -1 )
{
perror("setsockopt()");
goto error;
}
/* required to get parallel v4 + v6 working */
if( p->ai_family == AF_INET6 )
{
if( setsockopt(sock, IPPROTO_IPV6, IPV6_V6ONLY, &yes, sizeof(yes)) == -1 )
{
perror("setsockopt()");
goto error;
}
}
/* bind */
if( bind(sock, p->ai_addr, p->ai_addrlen) == -1 )
{
perror("bind()");
goto error;
}
/* listen */
if( listen(sock, UH_LIMIT_CLIENTS) == -1 )
{
perror("listen()");
goto error;
}
/* add listener to global list */
if( ! (l = uh_listener_add(sock, conf)) )
{
fprintf(stderr,
"uh_listener_add(): Can not create more than "
"%i listen sockets\n", UH_LIMIT_LISTENERS
);
goto error;
}
#ifdef HAVE_TLS
/* init TLS */
l->tls = do_tls ? conf->tls : NULL;
#endif
/* add socket to server fd set */
FD_SET(sock, serv_fds);
fd_cloexec(sock);
*max_fd = max(*max_fd, sock);
bound++;
continue;
error:
if( sock > 0 )
close(sock);
}
freeaddrinfo(addrs);
return bound;
}
