# define TCP_KEEPIDLE 0
#endif
-static memcached_return_t connect_poll(org::libmemcached::Instance* server)
+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= POLLOUT;
+ 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);
+ 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)) <= 0)
+ if ((number_of= poll(fds, 1, server->root->connect_timeout)) == -1)
{
- if (number_of == -1)
+ int local_errno= get_socket_errno(); // We cache in case closesocket() modifies errno
+ switch (local_errno)
{
- int local_errno= get_socket_errno(); // We cache in case closesocket() modifies errno
- switch (local_errno)
- {
-#ifdef TARGET_OS_LINUX
- case ERESTART:
+#ifdef __linux__
+ case ERESTART:
#endif
- case EINTR:
- continue;
+ 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);
+ }
- 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
- if (fds[0].revents & POLLERR)
- {
- int err;
- socklen_t len= sizeof(err);
- if (getsockopt(server->fd, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == 0)
- {
- if (err == 0)
- {
- // This should never happen, if it does? Punt.
- continue;
- }
- local_errno= err;
- }
- }
-
- assert_msg(server->fd != INVALID_SOCKET, "poll() was passed an invalid file descriptor");
- (void)closesocket(server->fd);
- server->fd= INVALID_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."));
}
}
- assert(number_of == 0);
- server->io_wait_count.timeouts++;
- return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT);
+ 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) == 0)
+ if (getsockopt(fds[0].fd, SOL_SOCKET, SO_ERROR, (char*)&err, &len) == -1)
{
- // We check the value to see what happened wth the socket.
- if (err == 0)
- {
- return MEMCACHED_SUCCESS;
- }
- errno= err;
+ return memcached_set_errno(*server, errno, MEMCACHED_AT, memcached_literal_param("getsockopt() errored while looking up error state from poll()"));
}
- return memcached_set_errno(*server, err, MEMCACHED_AT);
+ // We check the value to see what happened wth 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 & POLLIN or fds[0].revents & POLLOUT);
+ assert(fds[0].revents & POLLOUT);
- return MEMCACHED_SUCCESS;
+ 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, get_socket_errno(), MEMCACHED_AT);
+ return memcached_set_errno(*server, connection_error, MEMCACHED_AT, memcached_literal_param("connect_poll() was exhausted"));
}
-static memcached_return_t set_hostinfo(org::libmemcached::Instance* server)
+static memcached_return_t set_hostinfo(memcached_instance_st* server)
{
assert(server->type != MEMCACHED_CONNECTION_UNIX_SOCKET);
- if (server->address_info)
- {
- freeaddrinfo(server->address_info);
- server->address_info= NULL;
- server->address_info_next= NULL;
- }
+ server->clear_addrinfo();
- char str_port[MEMCACHED_NI_MAXSERV];
+ 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)
+ 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));
-#if 0
- hints.ai_family= AF_INET;
-#endif
+ hints.ai_family= AF_UNSPEC;
if (memcached_is_udp(server->root))
{
hints.ai_protocol= IPPROTO_UDP;
assert(server->address_info == NULL);
assert(server->address_info_next == NULL);
int errcode;
- switch(errcode= getaddrinfo(server->hostname, str_port, &hints, &server->address_info))
+ 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:
- if (server->address_info)
- {
- freeaddrinfo(server->address_info);
- server->address_info= NULL;
- server->address_info_next= NULL;
- }
return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT, memcached_string_make_from_cstr(gai_strerror(errcode)));
case EAI_SYSTEM:
- if (server->address_info)
- {
- freeaddrinfo(server->address_info);
- server->address_info= NULL;
- server->address_info_next= NULL;
- }
+ server->clear_addrinfo();
return memcached_set_errno(*server, errno, MEMCACHED_AT, memcached_literal_param("getaddrinfo(EAI_SYSTEM)"));
case EAI_BADFLAGS:
- if (server->address_info)
- {
- freeaddrinfo(server->address_info);
- server->address_info= NULL;
- server->address_info_next= NULL;
- }
+ server->clear_addrinfo();
return memcached_set_error(*server, MEMCACHED_INVALID_ARGUMENTS, MEMCACHED_AT, memcached_literal_param("getaddrinfo(EAI_BADFLAGS)"));
case EAI_MEMORY:
- if (server->address_info)
- {
- freeaddrinfo(server->address_info);
- server->address_info= NULL;
- server->address_info_next= NULL;
- }
+ server->clear_addrinfo();
return memcached_set_error(*server, MEMCACHED_MEMORY_ALLOCATION_FAILURE, MEMCACHED_AT, memcached_literal_param("getaddrinfo(EAI_MEMORY)"));
default:
{
- if (server->address_info)
- {
- freeaddrinfo(server->address_info);
- server->address_info= NULL;
- server->address_info_next= NULL;
- }
+ server->clear_addrinfo();
return memcached_set_error(*server, MEMCACHED_HOST_LOOKUP_FAILURE, MEMCACHED_AT, memcached_string_make_from_cstr(gai_strerror(errcode)));
}
}
- server->address_info_next= server->address_info;
- server->state= MEMCACHED_SERVER_STATE_ADDRINFO;
return MEMCACHED_SUCCESS;
}
-static inline void set_socket_nonblocking(org::libmemcached::Instance* server)
+static inline void set_socket_nonblocking(memcached_instance_st* server)
{
-#ifdef WIN32
+#if defined(_WIN32)
u_long arg= 1;
if (ioctlsocket(server->fd, FIONBIO, &arg) == SOCKET_ERROR)
{
#endif
}
-static bool set_socket_options(org::libmemcached::Instance* server)
+static bool set_socket_options(memcached_instance_st* server)
{
assert_msg(server->fd != INVALID_SOCKET, "invalid socket was passed to set_socket_options()");
// If SOCK_CLOEXEC exists then we don't need to call the following
if (SOCK_CLOEXEC == 0)
{
- if (FD_CLOEXEC)
+ if (FD_CLOEXEC != 0)
{
int flags;
do
#endif
-#if defined(__MACH__) && defined(__APPLE__) || defined(__FreeBSD__)
+#if defined(_WIN32)
+#else
+# if defined(SO_NOSIGPIPE)
if (SO_NOSIGPIPE)
{
int set= 1;
#endif
}
}
-#endif
+# endif // SO_NOSIGPIPE
+#endif // _WIN32
if (server->root->flags.no_block)
{
return true;
}
-static memcached_return_t unix_socket_connect(org::libmemcached::Instance* server)
+static memcached_return_t unix_socket_connect(memcached_instance_st* server)
{
-#ifndef WIN32
+#ifndef _WIN32
WATCHPOINT_ASSERT(server->fd == INVALID_SOCKET);
- int type= SOCK_STREAM;
- if (SOCK_CLOEXEC)
- {
- type|= SOCK_CLOEXEC;
- }
+ do {
+ int type= SOCK_STREAM;
+ if (SOCK_CLOEXEC != 0)
+ {
+ type|= SOCK_CLOEXEC;
+ }
- if (SOCK_NONBLOCK)
- {
- type|= SOCK_NONBLOCK;
- }
+ if (SOCK_NONBLOCK != 0)
+ {
+ type|= SOCK_NONBLOCK;
+ }
- if ((server->fd= socket(AF_UNIX, type, 0)) < 0)
- {
- memcached_set_errno(*server, errno, NULL);
- return MEMCACHED_CONNECTION_FAILURE;
- }
+ if ((server->fd= socket(AF_UNIX, type, 0)) == -1)
+ {
+ return memcached_set_errno(*server, errno, NULL);
+ }
- struct sockaddr_un servAddr;
+ struct sockaddr_un servAddr;
- memset(&servAddr, 0, sizeof (struct sockaddr_un));
- servAddr.sun_family= AF_UNIX;
- strncpy(servAddr.sun_path, server->hostname, sizeof(servAddr.sun_path)); /* Copy filename */
+ 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 */
- do {
- if (connect(server->fd, (struct sockaddr *)&servAddr, sizeof(servAddr)) < 0)
+ if (connect(server->fd, (struct sockaddr *)&servAddr, sizeof(servAddr)) == -1)
{
switch (errno)
{
case EINPROGRESS:
case EALREADY:
+ server->events(POLLOUT);
+ break;
+
case EINTR:
+ server->reset_socket();
continue;
case EISCONN: /* We were spinning waiting on connect */
{
assert(0); // Programmer error
- break;
+ server->reset_socket();
+ continue;
}
default:
WATCHPOINT_ERRNO(errno);
- memcached_set_errno(*server, errno, MEMCACHED_AT);
- return MEMCACHED_CONNECTION_FAILURE;
+ server->reset_socket();
+ return memcached_set_errno(*server, errno, MEMCACHED_AT);
}
}
} while (0);
#endif
}
-static memcached_return_t network_connect(org::libmemcached::Instance* server)
+static memcached_return_t network_connect(memcached_instance_st* server)
{
bool timeout_error_occured= false;
}
}
- if (server->address_info_next == NULL)
- {
- server->address_info_next= server->address_info;
- server->state= MEMCACHED_SERVER_STATE_ADDRINFO;
- }
+ assert(server->address_info_next);
+ assert(server->address_info);
/* Create the socket */
while (server->address_info_next and server->fd == INVALID_SOCKET)
{
- /* Memcache server does not support IPV6 in udp mode, so skip if not ipv4 */
- if (memcached_is_udp(server->root) and server->address_info_next->ai_family != AF_INET)
- {
- server->address_info_next= server->address_info_next->ai_next;
- continue;
- }
-
int type= server->address_info_next->ai_socktype;
- if (SOCK_CLOEXEC)
+ if (SOCK_CLOEXEC != 0)
{
type|= SOCK_CLOEXEC;
}
- if (SOCK_NONBLOCK)
+ if (SOCK_NONBLOCK != 0)
{
type|= SOCK_NONBLOCK;
}
if (set_socket_options(server) == false)
{
- (void)closesocket(server->fd);
+ server->reset_socket();
return MEMCACHED_CONNECTION_FAILURE;
}
}
/* An error occurred */
- switch (get_socket_errno())
+ int local_error= get_socket_errno();
+ switch (local_error)
{
case ETIMEDOUT:
timeout_error_occured= true;
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);
+ memcached_return_t rc= connect_poll(server, local_error);
if (memcached_success(rc))
{
case EINTR: // Special case, we retry ai_addr
WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
- (void)closesocket(server->fd);
- server->fd= INVALID_SOCKET;
+ server->reset_socket();
continue;
+ case ECONNREFUSED:
+ // Probably not running service
+
default:
break;
}
WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
- (void)closesocket(server->fd);
- server->fd= INVALID_SOCKET;
+ server->reset_socket();
server->address_info_next= server->address_info_next->ai_next;
}
if (timeout_error_occured)
{
- if (server->fd != INVALID_SOCKET)
- {
- (void)closesocket(server->fd);
- server->fd= INVALID_SOCKET;
- }
+ server->reset_socket();
}
WATCHPOINT_STRING("Never got a good file descriptor");
if (timeout_error_occured and server->state < MEMCACHED_SERVER_STATE_IN_PROGRESS)
{
- return memcached_set_error(*server, MEMCACHED_TIMEOUT, MEMCACHED_AT);
+ 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() */
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(org::libmemcached::Instance* server, bool& in_timeout)
+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 (_gettime_success and server->next_retry < curr_time.tv_sec)
{
server->state= MEMCACHED_SERVER_STATE_NEW;
+ server->server_timeout_counter= 0;
}
else
{
return MEMCACHED_SUCCESS;
}
-static memcached_return_t _memcached_connect(org::libmemcached::Instance* server, const bool set_last_disconnected)
+static memcached_return_t _memcached_connect(memcached_instance_st* server, const bool set_last_disconnected)
{
assert(server);
if (server->fd != INVALID_SOCKET)
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] == '/')
+ if (server->hostname()[0] == '/')
{
server->type= MEMCACHED_CONNECTION_UNIX_SOCKET;
}
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);
- fprintf(stderr, "%s:%d %s\n", __FILE__, __LINE__, memcached_strerror(NULL, rc));
if (memcached_failed(rc) and server->fd != INVALID_SOCKET)
{
WATCHPOINT_ASSERT(server->fd != INVALID_SOCKET);
- (void)closesocket(server->fd);
- server->fd= INVALID_SOCKET;
+ server->reset_socket();
}
}
}
+#endif
break;
case MEMCACHED_CONNECTION_UNIX_SOCKET:
if (in_timeout)
{
char buffer[1024];
- int snprintf_length= snprintf(buffer, sizeof(buffer), "%s:%d", server->hostname, int(server->port()));
+ 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_try(org::libmemcached::Instance* server)
-{
- if (server and server->root and server->root->state.is_parsing)
- {
- return MEMCACHED_SUCCESS;
- }
-
- return _memcached_connect(server, false);
-}
-
-memcached_return_t memcached_connect(org::libmemcached::Instance* server)
+memcached_return_t memcached_connect(memcached_instance_st* server)
{
return _memcached_connect(server, true);
}
projects / awesomized / libmemcached / blobdiff