-#include <memcached.h>
+#include "common.h"
-memcached_return memcached_server_add(memcached_st *ptr, char *hostname, unsigned int port)
+static memcached_return set_hostinfo(memcached_server_st *server)
{
- memcached_host_st *new_host_list;
- char *new_hostname;
+ struct addrinfo *ai;
+ struct addrinfo hints;
+ int e;
+ char str_port[NI_MAXSERV];
- if (!port)
- port= MEMCACHED_DEFAULT_PORT;
+ sprintf(str_port, "%u", server->port);
- if (!hostname)
- hostname= "localhost";
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family= AF_INET;
+ if (server->type == MEMCACHED_CONNECTION_UDP)
+ {
+ hints.ai_protocol= IPPROTO_UDP;
+ hints.ai_socktype= SOCK_DGRAM;
+ }
+ else
+ {
+ hints.ai_socktype= SOCK_STREAM;
+ hints.ai_protocol= IPPROTO_TCP;
+ }
- new_host_list= (memcached_host_st *)realloc(ptr->hosts, sizeof(memcached_host_st) * (ptr->number_of_hosts+1));
- memset((new_host_list + (sizeof(memcached_host_st) * ptr->number_of_hosts)) - sizeof(memcached_host_st),
- 0, sizeof(memcached_host_st));
-
- if (!new_host_list)
- return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
-
- ptr->hosts= new_host_list;
-
- new_hostname=
- (char *)malloc(sizeof(char) * (strlen(hostname)+1));
- if (!new_hostname)
- return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
+ e= getaddrinfo(server->hostname, str_port, &hints, &ai);
+ if (e != 0)
+ {
+ WATCHPOINT_STRING(server->hostname);
+ WATCHPOINT_STRING(gai_strerror(e));
+ return MEMCACHED_HOST_LOOKUP_FAILURE;
+ }
- memset(new_hostname, 0, strlen(hostname)+1);
- memcpy(new_hostname, hostname, strlen(hostname));
- ptr->hosts[ptr->number_of_hosts].hostname= new_hostname;
- ptr->hosts[ptr->number_of_hosts].port= port;
- ptr->hosts[ptr->number_of_hosts].fd= -1;
- ptr->number_of_hosts++;
+ if (server->address_info)
+ freeaddrinfo(server->address_info);
+ server->address_info= ai;
return MEMCACHED_SUCCESS;
}
-memcached_return memcached_connect(memcached_st *ptr)
+static memcached_return set_socket_options(memcached_server_st *ptr)
{
- unsigned int x;
- struct sockaddr_in localAddr, servAddr;
- struct hostent *h;
-
- if (ptr->connected)
+ if (ptr->type == MEMCACHED_CONNECTION_UDP)
return MEMCACHED_SUCCESS;
- if (!ptr->hosts)
+ if (ptr->root->flags & MEM_NO_BLOCK)
{
- memcached_return rc;
- rc= memcached_server_add(ptr, NULL, 0);
+ 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);
- if (rc != MEMCACHED_SUCCESS)
- return rc;
+ 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);
+ }
- for (x= 0; x < ptr->number_of_hosts; x++)
+ if (ptr->root->send_size)
{
- if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ int error;
- 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);
+ error= setsockopt(ptr->fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->root->send_size, (socklen_t)sizeof(int));
+ WATCHPOINT_ASSERT(error == 0);
+ }
- /* Create the socket */
- if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 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;
+
+ 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_server_st *ptr)
+{
+ struct sockaddr_un servAddr;
+ socklen_t addrlen;
+
+ if (ptr->fd == -1)
+ {
+ 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->hostname); /* Copy filename */
- /* bind any port number */
- localAddr.sin_family = AF_INET;
- localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
- localAddr.sin_port = htons(0);
+ addrlen= strlen(servAddr.sun_path) + sizeof(servAddr.sun_family);
- if (bind(ptr->hosts[0].fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
- return(MEMCACHED_CONNECTION_BIND_FAILURE);
+test_connect:
+ if (connect(ptr->fd,
+ (struct sockaddr *)&servAddr,
+ sizeof(servAddr)) < 0)
+ {
+ switch (errno) {
+ case EINPROGRESS:
+ {
+ struct timeval tm = { ptr->root->connect_timeout, 0 };
+ socklen_t len= sizeof(int);
+ fd_set wset;
+ int error=0, value;
- /* connect to server */
- if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
- return MEMCACHED_HOST_LOCKUP_FAILURE;
- }
+ FD_ZERO(&wset);
+ FD_SET(ptr->fd, &wset);
+
+ select(ptr->fd+1, NULL, &wset, NULL, &tm);
+ if (FD_ISSET(ptr->fd, &wset) != 0)
+ {
+ if (getsockopt(ptr->fd, SOL_SOCKET, SO_ERROR, &value, &len) == 0)
+ {
+ if (value)
+ {
+ error= 1;
+ }
+ }
+ else
+ {
+ error= 1;
+ }
+ }
+ else
+ {
+ error= 1;
+ }
- ptr->connected= 1;
+ if (error)
+ {
+ 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 EINTR:
+ goto test_connect;
+ case EISCONN: /* We were spinning waiting on connect */
+ break;
+ default:
+ WATCHPOINT_ERRNO(errno);
+ ptr->cached_errno= errno;
+ return MEMCACHED_ERRNO;
+ }
+ }
+ }
return MEMCACHED_SUCCESS;
}
+
+static memcached_return network_connect(memcached_server_st *ptr)
+{
+ if (ptr->fd == -1)
+ {
+ struct addrinfo *use;
+
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->cursor_active == 0);
+
+ if (ptr->sockaddr_inited == MEMCACHED_NOT_ALLOCATED ||
+ (!(ptr->root->flags & MEM_USE_CACHE_LOOKUPS)))
+ {
+ memcached_return rc;
+
+ rc= set_hostinfo(ptr);
+ if (rc != MEMCACHED_SUCCESS)
+ return rc;
+ ptr->sockaddr_inited= MEMCACHED_ALLOCATED;
+ }
+
+ use= ptr->address_info;
+ /* Create the socket */
+ while (use != NULL)
+ {
+ 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;
+ }
+
+ (void)set_socket_options(ptr);
+
+ /* connect to server */
+test_connect:
+ if (connect(ptr->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);
+ 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;
+ }
+ use = use->ai_next;
+ }
+ }
+
+ 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_server_st *ptr)
+{
+ memcached_return rc= MEMCACHED_NO_SERVERS;
+ LIBMEMCACHED_MEMCACHED_CONNECT_START();
+
+ if (ptr->root->retry_timeout)
+ {
+ struct timeval next_time;
+
+ gettimeofday(&next_time, NULL);
+ if (next_time.tv_sec < ptr->next_retry)
+ return MEMCACHED_TIMEOUT;
+ }
+ /* We need to clean up the multi startup piece */
+ switch (ptr->type)
+ {
+ 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);
+ }
+
+ if (rc != MEMCACHED_SUCCESS)
+ WATCHPOINT_ERROR(rc);
+
+ LIBMEMCACHED_MEMCACHED_CONNECT_END();
+
+ return rc;
+}
projects / awesomized / libmemcached / blobdiff