+++ /dev/null
-/* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
- *
- * Libmemcached library
- *
- * Copyright (C) 2011 Data Differential, http://datadifferential.com/
- * Copyright (C) 2006-2010 Brian Aker All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *
- * * The names of its contributors may not be used to endorse or
- * promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-
-#include <libmemcached/common.h>
-
-#include <cassert>
-
-#ifndef SOCK_CLOEXEC
-# define SOCK_CLOEXEC 0
-#endif
-
-#ifndef SOCK_NONBLOCK
-# define SOCK_NONBLOCK 0
-#endif
-
-#ifndef FD_CLOEXEC
-# define FD_CLOEXEC 0
-#endif
-
-#ifndef SO_NOSIGPIPE
-# define SO_NOSIGPIPE 0
-#endif
-
-#ifndef TCP_NODELAY
-# define TCP_NODELAY 0
-#endif
-
-#ifndef TCP_KEEPIDLE
-# define TCP_KEEPIDLE 0
-#endif
-
-static memcached_return_t connect_poll(memcached_instance_st* server, const int connection_error)
-{
- struct pollfd fds[1];
- fds[0].fd= server->fd;
- fds[0].events= server->events();
- fds[0].revents= 0;
-
- size_t loop_max= 5;
-
- if (server->root->poll_timeout == 0)
- {
- return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT,
- memcached_literal_param("The time to wait for a connection to be established was set to zero which produces a timeout to every call to poll()."));
- }
-
- while (--loop_max) // Should only loop on cases of ERESTART or EINTR
- {
- int number_of;
- if ((number_of= poll(fds, 1, server->root->connect_timeout)) == -1)
- {
- int local_errno= get_socket_errno(); // We cache in case closesocket() modifies errno
- switch (local_errno)
- {
-#ifdef __linux__
- case ERESTART:
-#endif
- case EINTR:
- continue;
-
- case EFAULT:
- case ENOMEM:
- return memcached_set_error(*server, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT);
-
- case EINVAL:
- return memcached_set_error(*server, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT,
- memcached_literal_param("RLIMIT_NOFILE exceeded, or if OSX the timeout value was invalid"));
-
- default: // This should not happen
- break;
- }
-
- assert_msg(server->fd != INVALID_SOCKET, "poll() was passed an invalid file descriptor");
- server->reset_socket();
- server->state= MEMCACHED_SERVER_STATE_NEW;
-
- return memcached_set_errno(*server, local_errno, MEMCACHED_AT);
- }
-
- if (number_of == 0)
- {
- if (connection_error == EINPROGRESS)
- {
- int err;
- socklen_t len= sizeof(err);
- if (getsockopt(server->fd, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == -1)
- {
- return memcached_set_errno(*server, errno, MEMCACHED_AT, memcached_literal_param("getsockopt() error'ed while looking for error connect_poll(EINPROGRESS)"));
- }
-
- // If Zero, my hero, we just fail to a generic MEMCACHED_TIMEOUT error
- if (err != 0)
- {
- return memcached_set_errno(*server, err, MEMCACHED_AT, memcached_literal_param("getsockopt() found the error from poll() after connect() returned EINPROGRESS."));
- }
- }
-
- return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT, memcached_literal_param("(number_of == 0)"));
- }
-
- assert (number_of == 1);
-
- if (fds[0].revents & POLLERR or
- fds[0].revents & POLLHUP or
- fds[0].revents & POLLNVAL)
- {
- int err;
- socklen_t len= sizeof (err);
- if (getsockopt(fds[0].fd, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == -1)
- {
- return memcached_set_errno(*server, errno, MEMCACHED_AT, memcached_literal_param("getsockopt() errored while looking up error state from poll()"));
- }
-
- // We check the value to see what happened with the socket.
- if (err == 0) // Should not happen
- {
- return MEMCACHED_SUCCESS;
- }
- errno= err;
-
- return memcached_set_errno(*server, err, MEMCACHED_AT, memcached_literal_param("getsockopt() found the error from poll() during connect."));
- }
- assert(fds[0].revents & POLLOUT);
-
- if (fds[0].revents & POLLOUT and connection_error == EINPROGRESS)
- {
- int err;
- socklen_t len= sizeof(err);
- if (getsockopt(server->fd, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == -1)
- {
- return memcached_set_errno(*server, errno, MEMCACHED_AT);
- }
-
- if (err == 0)
- {
- return MEMCACHED_SUCCESS;
- }
-
- return memcached_set_errno(*server, err, MEMCACHED_AT, memcached_literal_param("getsockopt() found the error from poll() after connect() returned EINPROGRESS."));
- }
-
- break; // We only have the loop setup for errno types that require restart
- }
-
- // This should only be possible from ERESTART or EINTR;
- return memcached_set_errno(*server, connection_error, MEMCACHED_AT, memcached_literal_param("connect_poll() was exhausted"));
-}
-
-static memcached_return_t set_hostinfo(memcached_instance_st* server)
-{
- assert(server->type != MEMCACHED_CONNECTION_UNIX_SOCKET);
- server->clear_addrinfo();
-
- char str_port[MEMCACHED_NI_MAXSERV]= { 0 };
- errno= 0;
- int length= snprintf(str_port, MEMCACHED_NI_MAXSERV, "%u", uint32_t(server->port()));
- if (length >= MEMCACHED_NI_MAXSERV or length <= 0 or errno != 0)
- {
- return memcached_set_error(*server, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT,
- memcached_literal_param("snprintf(NI_MAXSERV)"));
- }
-
- struct addrinfo hints;
- memset(&hints, 0, sizeof(struct addrinfo));
-
- hints.ai_family= AF_UNSPEC;
- if (memcached_is_udp(server->root))
- {
- hints.ai_protocol= IPPROTO_UDP;
- hints.ai_socktype= SOCK_DGRAM;
- }
- else
- {
- hints.ai_socktype= SOCK_STREAM;
- hints.ai_protocol= IPPROTO_TCP;
- }
-
- assert(server->address_info == NULL);
- assert(server->address_info_next == NULL);
- int errcode;
- assert(server->hostname());
- switch(errcode= getaddrinfo(server->hostname(), str_port, &hints, &server->address_info))
- {
- case 0:
- server->address_info_next= server->address_info;
- server->state= MEMCACHED_SERVER_STATE_ADDRINFO;
- break;
-
- case EAI_AGAIN:
- return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT, memcached_string_make_from_cstr(gai_strerror(errcode)));
-
- case EAI_SYSTEM:
- server->clear_addrinfo();
- return memcached_set_errno(*server, errno, MEMCACHED_AT, memcached_literal_param("getaddrinfo(EAI_SYSTEM)"));
-
- case EAI_BADFLAGS:
- server->clear_addrinfo();
- return memcached_set_error(*server, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("getaddrinfo(EAI_BADFLAGS)"));
-
- case EAI_MEMORY:
- server->clear_addrinfo();
- return memcached_set_error(*server, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, memcached_literal_param("getaddrinfo(EAI_MEMORY)"));
-
- default:
- {
- server->clear_addrinfo();
- return memcached_set_error(*server, MEMCACHED_HOST_LOOKUP_FAILURE, MEMCACHED_AT, memcached_string_make_from_cstr(gai_strerror(errcode)));
- }
- }
-
- return MEMCACHED_SUCCESS;
-}
-
-static inline void set_socket_nonblocking(memcached_instance_st* server)
-{
-#if defined(_WIN32)
- u_long arg= 1;
- if (ioctlsocket(server->fd, FIONBIO, &arg) == SOCKET_ERROR)
- {
- memcached_set_errno(*server, get_socket_errno(), NULL);
- }
-#else
- int flags;
-
- if (SOCK_NONBLOCK == 0)
- {
- do
- {
- flags= fcntl(server->fd, F_GETFL, 0);
- } while (flags == -1 && (errno == EINTR || errno == EAGAIN));
-
- if (flags == -1)
- {
- memcached_set_errno(*server, errno, NULL);
- }
- else if ((flags & O_NONBLOCK) == 0)
- {
- int rval;
-
- do
- {
- rval= fcntl(server->fd, F_SETFL, flags | O_NONBLOCK);
- } while (rval == -1 && (errno == EINTR or errno == EAGAIN));
-
- if (rval == -1)
- {
- memcached_set_errno(*server, errno, NULL);
- }
- }
- }
-#endif
-}
-
-static bool set_socket_options(memcached_instance_st* server)
-{
- assert_msg(server->fd != INVALID_SOCKET, "invalid socket was passed to set_socket_options()");
-
-#ifdef HAVE_FCNTL
- // If SOCK_CLOEXEC exists then we don't need to call the following
- if (SOCK_CLOEXEC == 0)
- {
- if (FD_CLOEXEC != 0)
- {
- int flags;
- do
- {
- flags= fcntl(server->fd, F_GETFD, 0);
- } while (flags == -1 and (errno == EINTR or errno == EAGAIN));
-
- if (flags != -1)
- {
- int rval;
- do
- {
- rval= fcntl (server->fd, F_SETFD, flags | FD_CLOEXEC);
- } while (rval == -1 && (errno == EINTR or errno == EAGAIN));
- // we currently ignore the case where rval is -1
- }
- }
- }
-#endif
-
- if (memcached_is_udp(server->root))
- {
- return true;
- }
-
-#ifdef HAVE_SNDTIMEO
- if (server->root->snd_timeout > 0)
- {
- struct timeval waittime;
-
- waittime.tv_sec= server->root->snd_timeout / 1000000;
- waittime.tv_usec= server->root->snd_timeout % 1000000;
-
- int error= setsockopt(server->fd, SOL_SOCKET, SO_SNDTIMEO,
- (char*)&waittime, (socklen_t)sizeof(struct timeval));
- (void)error;
- assert(error == 0);
- }
-#endif
-
-#ifdef HAVE_RCVTIMEO
- if (server->root->rcv_timeout > 0)
- {
- struct timeval waittime;
-
- waittime.tv_sec= server->root->rcv_timeout / 1000000;
- waittime.tv_usec= server->root->rcv_timeout % 1000000;
-
- int error= setsockopt(server->fd, SOL_SOCKET, SO_RCVTIMEO,
- (char*)&waittime, (socklen_t)sizeof(struct timeval));
- (void)(error);
- assert(error == 0);
- }
-#endif
-
-
-#if defined(_WIN32)
-#else
-# if defined(SO_NOSIGPIPE)
- if (SO_NOSIGPIPE)
- {
- int set= 1;
- int error= setsockopt(server->fd, SOL_SOCKET, SO_NOSIGPIPE, (void *)&set, sizeof(int));
-
- assert(error == 0);
-
- // This is not considered a fatal error
- if (error == -1)
- {
-#if 0
- perror("setsockopt(SO_NOSIGPIPE)");
-#endif
- }
- }
-# endif // SO_NOSIGPIPE
-#endif // _WIN32
-
- if (server->root->flags.no_block)
- {
- struct linger linger;
-
- linger.l_onoff= 1;
- linger.l_linger= 0; /* By default on close() just drop the socket */
- int error= setsockopt(server->fd, SOL_SOCKET, SO_LINGER,
- (char*)&linger, (socklen_t)sizeof(struct linger));
- (void)(error);
- assert(error == 0);
- }
-
- if (TCP_NODELAY)
- {
- if (server->root->flags.tcp_nodelay)
- {
- int flag= 1;
-
- int error= setsockopt(server->fd, IPPROTO_TCP, TCP_NODELAY,
- (char*)&flag, (socklen_t)sizeof(int));
- (void)(error);
- assert(error == 0);
- }
- }
-
- if (server->root->flags.tcp_keepalive)
- {
- int flag= 1;
-
- int error= setsockopt(server->fd, SOL_SOCKET, SO_KEEPALIVE,
- (char*)&flag, (socklen_t)sizeof(int));
- (void)(error);
- assert(error == 0);
- }
-
- if (TCP_KEEPIDLE)
- {
- if (server->root->tcp_keepidle > 0)
- {
- int error= setsockopt(server->fd, IPPROTO_TCP, TCP_KEEPIDLE,
- (char*)&server->root->tcp_keepidle, (socklen_t)sizeof(int));
- (void)(error);
- assert(error == 0);
- }
- }
-
- if (server->root->send_size > 0)
- {
- int error= setsockopt(server->fd, SOL_SOCKET, SO_SNDBUF,
- (char*)&server->root->send_size, (socklen_t)sizeof(int));
- (void)(error);
- assert(error == 0);
- }
-
- if (server->root->recv_size > 0)
- {
- int error= setsockopt(server->fd, SOL_SOCKET, SO_RCVBUF,
- (char*)&server->root->recv_size, (socklen_t)sizeof(int));
- (void)(error);
- assert(error == 0);
- }
-
- /* libmemcached will always use nonblocking IO to avoid write deadlocks */
- set_socket_nonblocking(server);
-
- return true;
-}
-
-static memcached_return_t unix_socket_connect(memcached_instance_st* server)
-{
-#ifndef _WIN32
- WATCHPOINT_ASSERT(server->fd == INVALID_SOCKET);
-
- do {
- int type= SOCK_STREAM;
- if (SOCK_CLOEXEC != 0)
- {
- type|= SOCK_CLOEXEC;
- }
-
- if (SOCK_NONBLOCK != 0)
- {
- type|= SOCK_NONBLOCK;
- }
-
- if ((server->fd= socket(AF_UNIX, type, 0)) == -1)
- {
- return memcached_set_errno(*server, errno, NULL);
- }
-
- struct sockaddr_un servAddr;
-
- memset(&servAddr, 0, sizeof (struct sockaddr_un));
- servAddr.sun_family= AF_UNIX;
- if (strlen(server->hostname()) >= sizeof(servAddr.sun_path)) {
- return memcached_set_error(*server, MEMCACHED_UNIX_SOCKET_PATH_TOO_BIG, MEMCACHED_AT);
- }
- strncpy(servAddr.sun_path, server->hostname(), sizeof(servAddr.sun_path)-1); /* Copy filename */
-
- if (connect(server->fd, (struct sockaddr *)&servAddr, sizeof(servAddr)) == -1)
- {
- switch (errno)
- {
- case EINPROGRESS:
- case EALREADY:
- case EAGAIN:
- server->events(POLLOUT);
- break;
-
- case EINTR:
- server->reset_socket();
- continue;
-
- case EISCONN: /* We were spinning waiting on connect */
- {
- assert(0); // Programmer error
- server->reset_socket();
- continue;
- }
-
- default:
- WATCHPOINT_ERRNO(errno);
- server->reset_socket();
- return memcached_set_errno(*server, errno, MEMCACHED_AT);
- }
- }
- } while (0);
- server->state= MEMCACHED_SERVER_STATE_CONNECTED;
-
- WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
-
- return MEMCACHED_SUCCESS;
-#else
- (void)server;
- return MEMCACHED_NOT_SUPPORTED;
-#endif
-}
-
-static memcached_return_t network_connect(memcached_instance_st* server)
-{
- bool timeout_error_occured= false;
-
- WATCHPOINT_ASSERT(server->fd == INVALID_SOCKET);
- WATCHPOINT_ASSERT(server->cursor_active_ == 0);
-
- /*
- We want to check both of these because if address_info_next has been fully tried, we want to do a new lookup to make sure we have picked up on any new DNS information.
- */
- if (server->address_info == NULL or server->address_info_next == NULL)
- {
- WATCHPOINT_ASSERT(server->state == MEMCACHED_SERVER_STATE_NEW);
- server->address_info_next= NULL;
- memcached_return_t rc= set_hostinfo(server);
-
- if (memcached_failed(rc))
- {
- return rc;
- }
- }
-
- assert(server->address_info_next);
- assert(server->address_info);
-
- /* Create the socket */
- while (server->address_info_next and server->fd == INVALID_SOCKET)
- {
- int type= server->address_info_next->ai_socktype;
- if (SOCK_CLOEXEC != 0)
- {
- type|= SOCK_CLOEXEC;
- }
-
- if (SOCK_NONBLOCK != 0)
- {
- type|= SOCK_NONBLOCK;
- }
-
- server->fd= socket(server->address_info_next->ai_family,
- type,
- server->address_info_next->ai_protocol);
-
- if (int(server->fd) == SOCKET_ERROR)
- {
- return memcached_set_errno(*server, get_socket_errno(), NULL);
- }
-
- if (set_socket_options(server) == false)
- {
- server->reset_socket();
- return MEMCACHED_CONNECTION_FAILURE;
- }
-
- /* connect to server */
- if ((connect(server->fd, server->address_info_next->ai_addr, server->address_info_next->ai_addrlen) != SOCKET_ERROR))
- {
- server->state= MEMCACHED_SERVER_STATE_CONNECTED;
- return MEMCACHED_SUCCESS;
- }
-
- /* An error occurred */
- int local_error= get_socket_errno();
- switch (local_error)
- {
- case ETIMEDOUT:
- timeout_error_occured= true;
- break;
-
-#if EWOULDBLOCK != EAGAIN
- case EWOULDBLOCK:
-#endif
- case EINPROGRESS: // nonblocking mode - first return
- case EALREADY: // nonblocking mode - subsequent returns
- {
- server->events(POLLOUT);
- server->state= MEMCACHED_SERVER_STATE_IN_PROGRESS;
- memcached_return_t rc= connect_poll(server, local_error);
-
- if (memcached_success(rc))
- {
- server->state= MEMCACHED_SERVER_STATE_CONNECTED;
- return MEMCACHED_SUCCESS;
- }
-
- // A timeout here is treated as an error, we will not retry
- if (rc == MEMCACHED_TIMEOUT)
- {
- timeout_error_occured= true;
- }
- }
- break;
-
- case EISCONN: // we are connected :-)
- WATCHPOINT_ASSERT(0); // This is a programmer's error
- break;
-
- case EINTR: // Special case, we retry ai_addr
- WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
- server->reset_socket();
- continue;
-
- case ECONNREFUSED:
- // Probably not running service
-
- default:
- memcached_set_errno(*server, local_error, MEMCACHED_AT);
- break;
- }
-
- WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
- server->reset_socket();
- server->address_info_next= server->address_info_next->ai_next;
- }
-
- WATCHPOINT_ASSERT(server->fd == INVALID_SOCKET);
-
- if (timeout_error_occured)
- {
- server->reset_socket();
- }
-
- WATCHPOINT_STRING("Never got a good file descriptor");
-
- if (memcached_has_current_error(*server))
- {
- return memcached_instance_error_return(server);
- }
-
- if (timeout_error_occured and server->state < MEMCACHED_SERVER_STATE_IN_PROGRESS)
- {
- return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT,
- memcached_literal_param("if (timeout_error_occured and server->state < MEMCACHED_SERVER_STATE_IN_PROGRESS)"));
- }
-
- return memcached_set_error(*server, MEMCACHED_CONNECTION_FAILURE, MEMCACHED_AT); /* The last error should be from connect() */
-}
-
-
-/*
- backoff_handling()
-
- Based on time/failure count fail the connect without trying. This prevents waiting in a state where
- we get caught spending cycles just waiting.
-*/
-static memcached_return_t backoff_handling(memcached_instance_st* server, bool& in_timeout)
-{
- struct timeval curr_time;
- bool _gettime_success= (gettimeofday(&curr_time, NULL) == 0);
-
- /*
- If we hit server_failure_limit then something is completely wrong about the server.
-
- 1) If autoeject is enabled we do that.
- 2) If not? We go into timeout again, there is much else to do :(
- */
- if (server->server_failure_counter >= server->root->server_failure_limit)
- {
- /*
- We just auto_eject if we hit this point
- */
- if (_is_auto_eject_host(server->root))
- {
- set_last_disconnected_host(server);
-
- // Retry dead servers if requested
- if (_gettime_success and server->root->dead_timeout > 0)
- {
- server->next_retry= curr_time.tv_sec +server->root->dead_timeout;
-
- // We only retry dead servers once before assuming failure again
- server->server_failure_counter= server->root->server_failure_limit -1;
- }
-
- memcached_return_t rc;
- if (memcached_failed(rc= run_distribution((memcached_st *)server->root)))
- {
- return memcached_set_error(*server, rc, MEMCACHED_AT, memcached_literal_param("Backoff handling failed during run_distribution"));
- }
-
- return memcached_set_error(*server, MEMCACHED_SERVER_MARKED_DEAD, MEMCACHED_AT);
- }
-
- server->state= MEMCACHED_SERVER_STATE_IN_TIMEOUT;
-
- // Sanity check/setting
- if (server->next_retry == 0)
- {
- server->next_retry= 1;
- }
- }
-
- if (server->state == MEMCACHED_SERVER_STATE_IN_TIMEOUT)
- {
- /*
- If next_retry is less then our current time, then we reset and try everything again.
- */
- if (_gettime_success and server->next_retry < curr_time.tv_sec)
- {
- server->state= MEMCACHED_SERVER_STATE_NEW;
- server->server_timeout_counter= 0;
- }
- else
- {
- return memcached_set_error(*server, MEMCACHED_SERVER_TEMPORARILY_DISABLED, MEMCACHED_AT);
- }
-
- in_timeout= true;
- }
-
- return MEMCACHED_SUCCESS;
-}
-
-static memcached_return_t _memcached_connect(memcached_instance_st* server, const bool set_last_disconnected)
-{
- assert(server);
- if (server->fd != INVALID_SOCKET)
- {
- return MEMCACHED_SUCCESS;
- }
-
- LIBMEMCACHED_MEMCACHED_CONNECT_START();
-
- bool in_timeout= false;
- memcached_return_t rc;
- if (memcached_failed(rc= backoff_handling(server, in_timeout)))
- {
- set_last_disconnected_host(server);
- return rc;
- }
-
- if (LIBMEMCACHED_WITH_SASL_SUPPORT and server->root->sasl.callbacks and memcached_is_udp(server->root))
- {
- return memcached_set_error(*server, MEMCACHED_INVALID_HOST_PROTOCOL, MEMCACHED_AT, memcached_literal_param("SASL is not supported for UDP connections"));
- }
-
- if (server->hostname()[0] == '/')
- {
- server->type= MEMCACHED_CONNECTION_UNIX_SOCKET;
- }
-
- /* We need to clean up the multi startup piece */
- switch (server->type)
- {
- case MEMCACHED_CONNECTION_UDP:
- case MEMCACHED_CONNECTION_TCP:
- rc= network_connect(server);
-
-#if defined(LIBMEMCACHED_WITH_SASL_SUPPORT)
- if (LIBMEMCACHED_WITH_SASL_SUPPORT)
- {
- if (server->fd != INVALID_SOCKET and server->root->sasl.callbacks)
- {
- rc= memcached_sasl_authenticate_connection(server);
- if (memcached_failed(rc) and server->fd != INVALID_SOCKET)
- {
- WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
- server->reset_socket();
- }
- }
- }
-#endif
- break;
-
- case MEMCACHED_CONNECTION_UNIX_SOCKET:
- rc= unix_socket_connect(server);
- break;
- }
-
- if (memcached_success(rc))
- {
- server->mark_server_as_clean();
- memcached_version_instance(server);
- return rc;
- }
- else if (set_last_disconnected)
- {
- set_last_disconnected_host(server);
- if (memcached_has_current_error(*server))
- {
- memcached_mark_server_for_timeout(server);
- assert(memcached_failed(memcached_instance_error_return(server)));
- }
- else
- {
- memcached_set_error(*server, rc, MEMCACHED_AT);
- memcached_mark_server_for_timeout(server);
- }
-
- LIBMEMCACHED_MEMCACHED_CONNECT_END();
-
- if (in_timeout)
- {
- char buffer[1024];
- int snprintf_length= snprintf(buffer, sizeof(buffer), "%s:%d", server->hostname(), int(server->port()));
- return memcached_set_error(*server, MEMCACHED_SERVER_TEMPORARILY_DISABLED, MEMCACHED_AT, buffer, snprintf_length);
- }
- }
-
- return rc;
-}
-
-memcached_return_t memcached_connect(memcached_instance_st* server)
-{
- return _memcached_connect(server, true);
-}
projects / awesomized / libmemcached / blobdiff