#include "common.h"
#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
-memcached_return memcached_connect(memcached_st *ptr)
+memcached_return memcached_real_connect(memcached_st *ptr, unsigned int server_key)
{
- unsigned int x;
struct sockaddr_in localAddr, servAddr;
struct hostent *h;
- LIBMEMCACHED_MEMCACHED_CONNECT_START();
+ if (ptr->hosts[server_key].fd == -1)
+ {
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
- if (ptr->connected == ptr->number_of_hosts)
- return MEMCACHED_SUCCESS;
+ if ((h= gethostbyname(ptr->hosts[server_key].hostname)) == NULL)
+ {
+ ptr->my_errno= h_errno;
+ return MEMCACHED_HOST_LOCKUP_FAILURE;
+ }
- if (!ptr->hosts)
- return MEMCACHED_NO_SERVERS;
+ servAddr.sin_family= h->h_addrtype;
+ memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
+ servAddr.sin_port = htons(ptr->hosts[server_key].port);
- for (x= 0; x < ptr->number_of_hosts; x++)
- {
- if (ptr->hosts[x].fd == -1)
+ /* Create the socket */
+ if ((ptr->hosts[server_key].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
- int flags;
-
- if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ ptr->my_errno= errno;
+ return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ }
- servAddr.sin_family= h->h_addrtype;
- memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
- servAddr.sin_port = htons(ptr->hosts[x].port);
+ /* bind any port number */
+ localAddr.sin_family = AF_INET;
+ localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
+ localAddr.sin_port = htons(0);
- /* Create the socket */
- if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
- return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ /* For the moment, not getting a nonblocking mode will note be fatal */
+ if (ptr->flags & MEM_NO_BLOCK)
+ {
+ int flags;
+ flags= fcntl(ptr->hosts[server_key].fd, F_GETFL, 0);
+ if (flags != -1)
+ (void)fcntl(ptr->hosts[server_key].fd, F_SETFL, flags | O_NONBLOCK);
+ }
- /* bind any port number */
- localAddr.sin_family = AF_INET;
- localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
- localAddr.sin_port = htons(0);
+ if (ptr->flags & MEM_TCP_NODELAY)
+ {
+ int flag= 1;
-#ifdef NOT_YET
- /* For the moment, not getting a nonblocking mode will note be fatal */
- flags= fcntl(ptr->hosts[0].fd, F_GETFL, 0);
- if (flags != -1)
- (void)fcntl(ptr->hosts[0].fd, F_SETFL, flags | O_NONBLOCK);
-#endif
+ setsockopt(ptr->hosts[server_key].fd, IPPROTO_TCP, TCP_NODELAY,
+ &flag, (socklen_t)sizeof(int));
+ }
- /* connect to server */
- if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ if (ptr->send_size)
+ {
+ setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->send_size, (socklen_t)sizeof(int));
+ }
+
+ if (ptr->recv_size)
+ {
+ setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->recv_size, (socklen_t)sizeof(int));
+ }
+ /* connect to server */
+test_connect:
+ if (connect(ptr->hosts[server_key].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 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->my_errno= errno;
+ return MEMCACHED_ERRNO;
+ }
ptr->connected++;
}
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
}
- LIBMEMCACHED_MEMCACHED_CONNECT_END();
return MEMCACHED_SUCCESS;
}
+
+
+memcached_return memcached_connect(memcached_st *ptr, unsigned int server_key)
+{
+ memcached_return rc= MEMCACHED_NO_SERVERS;
+ LIBMEMCACHED_MEMCACHED_CONNECT_START();
+
+ if (ptr->connected == ptr->number_of_hosts)
+ return MEMCACHED_SUCCESS;
+
+ if (!ptr->hosts)
+ return MEMCACHED_NO_SERVERS;
+
+ /* We need to clean up the multi startup piece */
+ if (server_key)
+ rc= memcached_real_connect(ptr, server_key);
+ else
+ {
+ unsigned int x;
+
+ for (x= 0; x < ptr->number_of_hosts; x++)
+ {
+ memcached_return possible_rc;
+
+ possible_rc= memcached_real_connect(ptr, x);
+ rc= MEMCACHED_SUCCESS;
+
+ if (possible_rc != MEMCACHED_SUCCESS)
+ rc= MEMCACHED_SOME_ERRORS;
+ }
+ }
+ LIBMEMCACHED_MEMCACHED_CONNECT_END();
+
+ return rc;
+}