#include "common.h"
-memcached_return memcached_connect(memcached_st *ptr)
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+
+static memcached_return set_hostinfo(memcached_server_st *server)
{
- unsigned int x;
- struct sockaddr_in localAddr, servAddr;
struct hostent *h;
- LIBMEMCACHED_MEMCACHED_CONNECT_START();
+ if ((h= gethostbyname(server->hostname)) == NULL)
+ {
+ return MEMCACHED_HOST_LOCKUP_FAILURE;
+ }
- if (ptr->connected == ptr->number_of_hosts)
- return MEMCACHED_SUCCESS;
+ server->servAddr.sin_family= h->h_addrtype;
+ memcpy((char *) &server->servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
+ server->servAddr.sin_port = htons(server->port);
- if (!ptr->hosts)
- return MEMCACHED_NO_SERVERS;
+ return MEMCACHED_SUCCESS;
+}
+
+static memcached_return unix_socket_connect(memcached_st *ptr, unsigned int server_key)
+{
+ struct sockaddr_un servAddr;
+ socklen_t addrlen;
+
+ if (ptr->hosts[server_key].fd == -1)
+ {
+ if ((ptr->hosts[server_key].fd= socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+ {
+ ptr->cached_errno= errno;
+ return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ }
+
+ memset(&servAddr, 0, sizeof (struct sockaddr_un));
+ servAddr.sun_family= AF_UNIX;
+ strcpy(servAddr.sun_path, ptr->hosts[server_key].hostname); /* Copy filename */
+
+ addrlen= strlen(servAddr.sun_path) + sizeof(servAddr.sun_family);
+
+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->cached_errno= errno;
+ return MEMCACHED_ERRNO;
+ }
+ ptr->connected++;
+ }
+ }
+ return MEMCACHED_SUCCESS;
+}
- for (x= 0; x < ptr->number_of_hosts; x++)
+static memcached_return udp_connect(memcached_st *ptr, unsigned int server_key)
+{
+ if (ptr->hosts[server_key].fd == -1)
{
- if (ptr->hosts[x].fd == -1)
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
+
+ /*
+ If we have not allocated the hosts object.
+ Or if the cache has not been set.
+ */
+ if (ptr->hosts[server_key].sockaddr_inited == MEMCACHED_NOT_ALLOCATED ||
+ (!(ptr->flags & MEM_USE_CACHE_LOOKUPS)))
{
- if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ memcached_return rc;
- 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);
+ rc= set_hostinfo(&ptr->hosts[server_key]);
+ if (rc != MEMCACHED_SUCCESS)
+ return rc;
+
+ ptr->hosts[server_key].sockaddr_inited= MEMCACHED_ALLOCATED;
+ }
+
+ /* Create the socket */
+ if ((ptr->hosts[server_key].fd= socket(AF_INET, SOCK_DGRAM, 0)) < 0)
+ {
+ ptr->cached_errno= errno;
+ return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ }
+ }
- /* Create the socket */
- if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
- return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ return MEMCACHED_SUCCESS;
+}
+static memcached_return tcp_connect(memcached_st *ptr, unsigned int server_key)
+{
+ if (ptr->hosts[server_key].fd == -1)
+ {
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
- /* bind any port number */
- localAddr.sin_family = AF_INET;
- localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
- localAddr.sin_port = htons(0);
+ if (ptr->hosts[server_key].servAddr.sin_family == 0)
+ {
+ memcached_return rc;
- if (bind(ptr->hosts[0].fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
- return(MEMCACHED_CONNECTION_BIND_FAILURE);
+ rc= set_hostinfo(&ptr->hosts[server_key]);
+ if (rc != MEMCACHED_SUCCESS)
+ return rc;
+ }
- /* connect to server */
- if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ /* Create the socket */
+ if ((ptr->hosts[server_key].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ {
+ ptr->cached_errno= errno;
+ 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);
+ }
+
+ if (ptr->flags & MEM_TCP_NODELAY)
+ {
+ int flag= 1;
+
+ setsockopt(ptr->hosts[server_key].fd, IPPROTO_TCP, TCP_NODELAY,
+ &flag, (socklen_t)sizeof(int));
+ }
+
+ 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 *)&ptr->hosts[server_key].servAddr,
+ sizeof(struct sockaddr)) < 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;
+ 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 && ptr->number_of_hosts)
+ return MEMCACHED_SUCCESS;
+
+ if (ptr->hosts == NULL || ptr->number_of_hosts == 0)
+ return MEMCACHED_NO_SERVERS;
+
+ /* We need to clean up the multi startup piece */
+ if (server_key)
+ {
+ rc= tcp_connect(ptr, server_key);
+ switch (ptr->hosts[server_key].type)
+ {
+ case MEMCACHED_CONNECTION_UNKNOWN:
+ WATCHPOINT_ASSERT(0);
+ rc= MEMCACHED_NOT_SUPPORTED;
+ break;
+ case MEMCACHED_CONNECTION_UDP:
+ rc= udp_connect(ptr, server_key);
+ break;
+ case MEMCACHED_CONNECTION_TCP:
+ rc= tcp_connect(ptr, server_key);
+ break;
+ case MEMCACHED_CONNECTION_UNIX_SOCKET:
+ rc= unix_socket_connect(ptr, server_key);
+ break;
+ }
+ }
+ else
+ {
+ unsigned int x;
+
+ for (x= 0; x < ptr->number_of_hosts; x++)
+ {
+ memcached_return possible_rc;
+
+ possible_rc= MEMCACHED_NOT_SUPPORTED; /* Remove warning */
+
+ switch (ptr->hosts[x].type)
+ {
+ case MEMCACHED_CONNECTION_UNKNOWN:
+ WATCHPOINT_ASSERT(0);
+ possible_rc= MEMCACHED_NOT_SUPPORTED;
+ break;
+ case MEMCACHED_CONNECTION_UDP:
+ possible_rc= udp_connect(ptr, x);
+ break;
+ case MEMCACHED_CONNECTION_TCP:
+ possible_rc= tcp_connect(ptr, x);
+ break;
+ case MEMCACHED_CONNECTION_UNIX_SOCKET:
+ possible_rc= unix_socket_connect(ptr, x);
+ break;
+ }
+ rc= MEMCACHED_SUCCESS;
+
+ if (possible_rc != MEMCACHED_SUCCESS)
+ rc= MEMCACHED_SOME_ERRORS;
+ }
+ }
+ LIBMEMCACHED_MEMCACHED_CONNECT_END();
+
+ return rc;
+}
projects / awesomized / libmemcached / blobdiff