-#include <memcached.h>
+#include "common.h"
-memcached_return memcached_connect(memcached_st *ptr)
+static memcached_return set_hostinfo(memcached_server_st *server)
{
- int rc;
- struct sockaddr_in localAddr, servAddr;
- struct hostent *h;
- char *server_name= "localhost";
+ struct addrinfo *ai;
+ struct addrinfo hints;
+ int e;
+ char str_port[NI_MAXSERV];
- if (ptr->connected)
- return MEMCACHED_SUCCESS;
+ sprintf(str_port, "%u", server->port);
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family= AF_INET;
+ hints.ai_socktype= SOCK_STREAM;
+ hints.ai_protocol= 0;
- if ((h= gethostbyname(server_name)) == NULL)
+ e= getaddrinfo(server->hostname, str_port, &hints, &ai);
+ if (e != 0)
{
- fprintf(stderr, "unknown host '%s'\n", server_name);
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ WATCHPOINT_STRING(server->hostname);
+ WATCHPOINT_STRING(gai_strerror(e));
+ return MEMCACHED_HOST_LOOKUP_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(MEMCACHED_DEFAULT_PORT);
+ if (server->address_info)
+ freeaddrinfo(server->address_info);
+ server->address_info= ai;
+
+ return MEMCACHED_SUCCESS;
+}
+
+static memcached_return unix_socket_connect(memcached_st *ptr, unsigned int server_key)
+{
+ struct sockaddr_un servAddr;
+ socklen_t addrlen;
- /* Create the socket */
- if ((ptr->fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ if (ptr->hosts[server_key].fd == -1)
{
- fprintf(stderr, "cannot open socket");
- return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
+ 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:
+ WATCHPOINT_ERRNO(errno);
+ ptr->cached_errno= errno;
+ return MEMCACHED_ERRNO;
+ }
+ ptr->connected++;
+ }
}
+ return MEMCACHED_SUCCESS;
+}
+
+static memcached_return udp_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);
+
+ /*
+ 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)))
+ {
+ memcached_return rc;
+ 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;
+ }
+ }
- /* bind any port number */
- localAddr.sin_family = AF_INET;
- localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
- localAddr.sin_port = htons(0);
+ return MEMCACHED_SUCCESS;
+}
- if (bind(ptr->fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
+static memcached_return tcp_connect(memcached_st *ptr, unsigned int server_key)
+{
+ if (ptr->hosts[server_key].fd == -1)
{
- fprintf(stderr, "cannot bind port TCP %u\n", MEMCACHED_DEFAULT_PORT);
- return(MEMCACHED_CONNECTION_BIND_FAILURE);
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
+ struct addrinfo *use;
+
+ if (ptr->hosts[server_key].sockaddr_inited == MEMCACHED_NOT_ALLOCATED ||
+ (!(ptr->flags & MEM_USE_CACHE_LOOKUPS)))
+ {
+ memcached_return rc;
+
+ rc= set_hostinfo(&ptr->hosts[server_key]);
+ if (rc != MEMCACHED_SUCCESS)
+ return rc;
+ ptr->hosts[server_key].sockaddr_inited= MEMCACHED_ALLOCATED;
+ }
+ use= ptr->hosts[server_key].address_info;
+
+ /* Create the socket */
+ if ((ptr->hosts[server_key].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->flags & MEM_NO_BLOCK)
+ {
+ int error;
+ struct linger linger;
+
+ linger.l_onoff= 1;
+ linger.l_linger= MEMCACHED_DEFAULT_TIMEOUT;
+ error= setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_LINGER,
+ &linger, (socklen_t)sizeof(struct linger));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ if (ptr->flags & MEM_TCP_NODELAY)
+ {
+ int flag= 1;
+ int error;
+
+ error= setsockopt(ptr->hosts[server_key].fd, IPPROTO_TCP, TCP_NODELAY,
+ &flag, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ if (ptr->send_size)
+ {
+ int error;
+
+ error= setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->send_size, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ if (ptr->recv_size)
+ {
+ int error;
+
+ error= setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->recv_size, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
+
+ /* For the moment, not getting a nonblocking mode will not 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);
+ }
+ }
+
+
+ /* connect to server */
+test_connect:
+ if (connect(ptr->hosts[server_key].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_ERRNO(ptr->cached_errno);
+ return MEMCACHED_ERRNO;
+ }
+ ptr->connected++;
+ }
+
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
}
- /* connect to server */
- if (connect(ptr->fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
+ 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 */
+ switch (ptr->hosts[server_key].type)
{
- fprintf(stderr, "cannot connect to host '%s'\n", server_name);
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ 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;
}
- ptr->connected= 1;
+ if (rc != MEMCACHED_SUCCESS)
+ WATCHPOINT_ERROR(rc);
- return MEMCACHED_SUCCESS;
+ LIBMEMCACHED_MEMCACHED_CONNECT_END();
+
+ return rc;
}
projects / m6w6 / libmemcached / blobdiff