#include "common.h"
-
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/un.h>
-#include <netinet/tcp.h>
-#include <netdb.h>
+#include <poll.h>
static memcached_return set_hostinfo(memcached_server_st *server)
{
- struct hostent *h;
-#ifdef HAVE_GETHOSTBYNAME_R
- struct hostent h_static;
- char buffer[SMALL_STRING_LEN];
- int tmp_error;
-
- if (gethostbyname_r(server->hostname,
- &h_static, buffer, SMALL_STRING_LEN,
- &h, &tmp_error))
+ struct addrinfo *ai;
+ struct addrinfo hints;
+ int e;
+ char str_port[NI_MAXSERV];
+
+ sprintf(str_port, "%u", server->port);
+
+ memset(&hints, 0, sizeof(hints));
+
+ hints.ai_family= AF_INET;
+ if (server->type == MEMCACHED_CONNECTION_UDP)
{
- WATCHPOINT_STRING(server->hostname);
- WATCHPOINT_STRING(hstrerror(tmp_error));
- return MEMCACHED_HOST_LOOKUP_FAILURE;
+ hints.ai_protocol= IPPROTO_UDP;
+ hints.ai_socktype= SOCK_DGRAM;
}
-#else
- if ((h= gethostbyname(server->hostname)) == NULL)
+ else
+ {
+ hints.ai_socktype= SOCK_STREAM;
+ hints.ai_protocol= IPPROTO_TCP;
+ }
+
+ e= getaddrinfo(server->hostname, str_port, &hints, &ai);
+ if (e != 0)
{
WATCHPOINT_STRING(server->hostname);
- WATCHPOINT_STRING(hstrerror(h_errno));
+ WATCHPOINT_STRING(gai_strerror(e));
return MEMCACHED_HOST_LOOKUP_FAILURE;
}
-#endif
- server->servAddr.sin_family= h->h_addrtype;
- memcpy((char *) &server->servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
+ if (server->address_info)
+ freeaddrinfo(server->address_info);
+ server->address_info= ai;
+
+ return MEMCACHED_SUCCESS;
+}
+
+static memcached_return set_socket_options(memcached_server_st *ptr)
+{
+ if (ptr->type == MEMCACHED_CONNECTION_UDP)
+ return MEMCACHED_SUCCESS;
+
+ 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;
- server->servAddr.sin_port = htons(server->port);
+ flags= fcntl(ptr->fd, F_GETFL, 0);
+ if (flags != -1)
+ {
+ (void)fcntl(ptr->fd, F_SETFL, flags | O_NONBLOCK);
+ }
+ }
return MEMCACHED_SUCCESS;
}
-static memcached_return unix_socket_connect(memcached_st *ptr, unsigned int server_key)
+static memcached_return unix_socket_connect(memcached_server_st *ptr)
{
struct sockaddr_un servAddr;
socklen_t addrlen;
- if (ptr->hosts[server_key].fd == -1)
+ if (ptr->fd == -1)
{
- if ((ptr->hosts[server_key].fd= socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+ if ((ptr->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 */
+ strcpy(servAddr.sun_path, ptr->hostname); /* Copy filename */
addrlen= strlen(servAddr.sun_path) + sizeof(servAddr.sun_family);
test_connect:
- if (connect(ptr->hosts[server_key].fd,
+ if (connect(ptr->fd,
(struct sockaddr *)&servAddr,
sizeof(servAddr)) < 0)
{
switch (errno) {
- /* We are spinning waiting on connect */
- case EALREADY:
case EINPROGRESS:
+ case EALREADY:
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)
+static memcached_return network_connect(memcached_server_st *ptr)
{
- if (ptr->hosts[server_key].fd == -1)
+ if (ptr->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;
+ struct addrinfo *use;
- 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;
- }
- }
-
- 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);
+ WATCHPOINT_ASSERT(ptr->cursor_active == 0);
- if (ptr->hosts[server_key].servAddr.sin_family == 0)
+ if (ptr->sockaddr_inited == MEMCACHED_NOT_ALLOCATED ||
+ (!(ptr->root->flags & MEM_USE_CACHE_LOOKUPS)))
{
memcached_return rc;
- rc= set_hostinfo(&ptr->hosts[server_key]);
+ rc= set_hostinfo(ptr);
if (rc != MEMCACHED_SUCCESS)
return rc;
+ ptr->sockaddr_inited= MEMCACHED_ALLOCATED;
}
+ use= ptr->address_info;
/* 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)
+ while (use != NULL)
{
- 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->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->recv_size)
- {
- setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_SNDBUF,
- &ptr->recv_size, (socklen_t)sizeof(int));
- }
+ (void)set_socket_options(ptr);
- /* connect to server */
+ /* 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) {
+ if (connect(ptr->fd,
+ use->ai_addr,
+ use->ai_addrlen) < 0)
+ {
+ switch (errno) {
+ /* We are spinning waiting on connect */
+ case EALREADY:
+ case EINPROGRESS:
+ {
+ struct pollfd fds[1];
+ int error;
+
+ memset(&fds, 0, sizeof(struct pollfd));
+ fds[0].fd= ptr->fd;
+ fds[0].events= POLLOUT | POLLERR;
+ error= poll(fds, 1, ptr->root->connect_timeout);
+
+ if (error != 1)
+ {
+ ptr->cached_errno= errno;
+ WATCHPOINT_ERRNO(ptr->cached_errno);
+ close(ptr->fd);
+ ptr->fd= -1;
+ return MEMCACHED_ERRNO;
+ }
+
+ break;
+ }
/* 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;
+ case EINTR:
+ goto test_connect;
+ case EISCONN: /* We were spinning waiting on connect */
+ break;
+ default:
+ ptr->cached_errno= errno;
+ WATCHPOINT_ERRNO(ptr->cached_errno);
+ close(ptr->fd);
+ ptr->fd= -1;
+ if (ptr->root->retry_timeout)
+ {
+ struct timeval next_time;
+
+ gettimeofday(&next_time, NULL);
+ ptr->next_retry= next_time.tv_sec + ptr->root->retry_timeout;
+ }
+ }
+ }
+ else
+ {
+ WATCHPOINT_ASSERT(ptr->cursor_active == 0);
+ return MEMCACHED_SUCCESS;
}
- ptr->connected++;
+ use = use->ai_next;
}
- WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
}
- return MEMCACHED_SUCCESS;
+ if (ptr->fd == -1)
+ return MEMCACHED_ERRNO; /* The last error should be from connect() */
+
+ return MEMCACHED_SUCCESS; /* The last error should be from connect() */
}
-memcached_return memcached_connect(memcached_st *ptr, unsigned int server_key)
+memcached_return memcached_connect(memcached_server_st *ptr)
{
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)
+ if (ptr->root->retry_timeout)
{
- 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;
- }
+ struct timeval next_time;
- if (rc != MEMCACHED_SUCCESS)
- WATCHPOINT_ERROR(rc);
+ gettimeofday(&next_time, NULL);
+ if (next_time.tv_sec < ptr->next_retry)
+ return MEMCACHED_TIMEOUT;
}
- else
+ /* We need to clean up the multi startup piece */
+ switch (ptr->type)
{
- unsigned int x;
-
- for (x= 0; x < ptr->number_of_hosts; x++)
- {
- memcached_return possible_rc;
-
- possible_rc= MEMCACHED_NOT_SUPPORTED; /* Remove warning */
+ case MEMCACHED_CONNECTION_UNKNOWN:
+ WATCHPOINT_ASSERT(0);
+ rc= MEMCACHED_NOT_SUPPORTED;
+ break;
+ case MEMCACHED_CONNECTION_UDP:
+ case MEMCACHED_CONNECTION_TCP:
+ rc= network_connect(ptr);
+ break;
+ case MEMCACHED_CONNECTION_UNIX_SOCKET:
+ rc= unix_socket_connect(ptr);
+ break;
+ default:
+ WATCHPOINT_ASSERT(0);
+ }
- 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 (rc != MEMCACHED_SUCCESS)
+ WATCHPOINT_ERROR(rc);
- if (possible_rc != MEMCACHED_SUCCESS)
- {
- WATCHPOINT_ERROR(possible_rc);
- rc= MEMCACHED_SOME_ERRORS;
- }
- }
- }
LIBMEMCACHED_MEMCACHED_CONNECT_END();
return rc;
projects / awesomized / libmemcached / blobdiff