+
+static memcached_return tcp_connect(memcached_server_st *ptr)
+{
+ if (ptr->fd == -1)
+ {
+ struct addrinfo *use;
+
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->cursor_active == 0);
+
+ if (ptr->sockaddr_inited == MEMCACHED_NOT_ALLOCATED ||
+ (!(ptr->root->flags & MEM_USE_CACHE_LOOKUPS)))
+ {
+ memcached_return rc;
+
+ rc= set_hostinfo(ptr);
+ if (rc != MEMCACHED_SUCCESS)
+ return rc;
+ ptr->sockaddr_inited= MEMCACHED_ALLOCATED;
+ }
+ use= ptr->address_info;
+
+ /* Create the socket */
+ if ((ptr->fd= socket(use->ai_family,
+ use->ai_socktype,
+ use->ai_protocol)) < 0)
+ {
+ ptr->cached_errno= errno;
+ WATCHPOINT_ERRNO(errno);
+ return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ }
+
+ if (ptr->root->flags & MEM_NO_BLOCK)
+ {
+ int error;
+ struct linger linger;
+ struct timeval waittime;
+
+ waittime.tv_sec= 10;
+ waittime.tv_usec= 0;
+
+ linger.l_onoff= 1;
+ linger.l_linger= MEMCACHED_DEFAULT_TIMEOUT;
+ error= setsockopt(ptr->fd, SOL_SOCKET, SO_LINGER,
+ &linger, (socklen_t)sizeof(struct linger));
+ WATCHPOINT_ASSERT(error == 0);
+
+ error= setsockopt(ptr->fd, SOL_SOCKET, SO_SNDTIMEO,
+ &waittime, (socklen_t)sizeof(struct timeval));
+ WATCHPOINT_ASSERT(error == 0);
+
+ error= setsockopt(ptr->fd, SOL_SOCKET, SO_RCVTIMEO,
+ &waittime, (socklen_t)sizeof(struct timeval));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ if (ptr->root->flags & MEM_TCP_NODELAY)
+ {
+ int flag= 1;
+ int error;
+
+ error= setsockopt(ptr->fd, IPPROTO_TCP, TCP_NODELAY,
+ &flag, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ if (ptr->root->send_size)
+ {
+ int error;
+
+ error= setsockopt(ptr->fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->root->send_size, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ if (ptr->root->recv_size)
+ {
+ int error;
+
+ error= setsockopt(ptr->fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->root->recv_size, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ /* For the moment, not getting a nonblocking mode will not be fatal */
+ if (ptr->root->flags & MEM_NO_BLOCK)
+ {
+ int flags;
+
+ flags= fcntl(ptr->fd, F_GETFL, 0);
+ if (flags != -1)
+ {
+ (void)fcntl(ptr->fd, F_SETFL, flags | O_NONBLOCK);
+ }
+ }
+
+
+ /* connect to server */
+test_connect:
+ if (connect(ptr->fd,
+ use->ai_addr,
+ use->ai_addrlen) < 0)
+ {
+ switch (errno) {
+ /* We are spinning waiting on connect */
+ case EALREADY:
+ case EINPROGRESS:
+ case EINTR:
+ goto test_connect;
+ case EISCONN: /* We were spinning waiting on connect */
+ break;
+ default:
+ ptr->cached_errno= errno;
+ WATCHPOINT_ASSERT(errno == ECONNREFUSED);
+ WATCHPOINT_ERRNO(ptr->cached_errno);
+ close(ptr->fd);
+ ptr->fd= -1;
+ return MEMCACHED_ERRNO;
+ }
+ }
+
+ WATCHPOINT_ASSERT(ptr->cursor_active == 0);
+ }
+
+ return MEMCACHED_SUCCESS;
+}
+
+
+memcached_return memcached_connect(memcached_server_st *ptr)
+{
+ memcached_return rc= MEMCACHED_NO_SERVERS;
+ LIBMEMCACHED_MEMCACHED_CONNECT_START();
+
+ /* We need to clean up the multi startup piece */
+ switch (ptr->type)
+ {
+ case MEMCACHED_CONNECTION_UNKNOWN:
+ WATCHPOINT_ASSERT(0);
+ rc= MEMCACHED_NOT_SUPPORTED;
+ break;
+ case MEMCACHED_CONNECTION_UDP:
+ rc= udp_connect(ptr);
+ break;
+ case MEMCACHED_CONNECTION_TCP:
+ rc= tcp_connect(ptr);
+ break;
+ case MEMCACHED_CONNECTION_UNIX_SOCKET:
+ rc= unix_socket_connect(ptr);
+ break;
+ default:
+ WATCHPOINT_ASSERT(0);
+ }
+
+ if (rc != MEMCACHED_SUCCESS)
+ WATCHPOINT_ERROR(rc);
+
+ LIBMEMCACHED_MEMCACHED_CONNECT_END();
+
+ return rc;
+}