-#include <memcached.h>
+#include "common.h"
-memcached_return memcached_server_add(memcached_st *ptr, char *hostname, unsigned int port)
-{
- memcached_host_st *host_ptr, *prev_ptr;
-
- if (!port)
- port= MEMCACHED_DEFAULT_PORT;
-
- if (!hostname)
- hostname= "localhost";
-
- if (ptr->hosts)
- {
- for (host_ptr= ptr->hosts; host_ptr; host_ptr= host_ptr->next)
- prev_ptr= host_ptr;
- host_ptr= (memcached_host_st *)malloc(sizeof(memcached_host_st));
- if (!host_ptr)
- return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
- prev_ptr->next= host_ptr;
- }
- else
- {
- ptr->hosts=
- host_ptr= (memcached_host_st *)malloc(sizeof(memcached_host_st));
- if (!host_ptr)
- return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
- }
-
- memset(host_ptr, 0, sizeof(memcached_host_st));
- host_ptr->hostname= (char *)malloc(sizeof(char) * strlen(hostname));
-
- if (!host_ptr->hostname)
- {
- free(host_ptr);
- return MEMCACHED_MEMORY_ALLOCATION_FAILURE;
- }
- memcpy(host_ptr->hostname, hostname, strlen(hostname));
- host_ptr->port= port;
-
- return MEMCACHED_SUCCESS;
-}
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
-memcached_return memcached_connect(memcached_st *ptr)
+memcached_return memcached_real_connect(memcached_st *ptr, unsigned int server_key)
{
struct sockaddr_in localAddr, servAddr;
struct hostent *h;
- memcached_host_st *host_ptr;
-
- if (ptr->connected)
- return MEMCACHED_SUCCESS;
- if (!ptr->hosts)
+ if (ptr->hosts[server_key].fd == -1)
{
- memcached_return rc;
- rc= memcached_server_add(ptr, NULL, 0);
-
- if (rc != MEMCACHED_SUCCESS)
- return rc;
- }
+ /* Old connection junk still is in the structure */
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
-
- for (host_ptr= ptr->hosts; host_ptr; host_ptr= host_ptr->next)
- {
- if ((h= gethostbyname(host_ptr->hostname)) == NULL)
+ if ((h= gethostbyname(ptr->hosts[server_key].hostname)) == NULL)
{
- fprintf(stderr, "unknown host '%s'\n", host_ptr->hostname);
+ ptr->my_errno= h_errno;
return MEMCACHED_HOST_LOCKUP_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(host_ptr->port);
+ servAddr.sin_port = htons(ptr->hosts[server_key].port);
/* Create the socket */
- if ((ptr->fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
+ if ((ptr->hosts[server_key].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
- fprintf(stderr, "cannot open socket");
+ ptr->my_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);
- if (bind(ptr->fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
+ /* For the moment, not getting a nonblocking mode will note be fatal */
+ if (ptr->flags & MEM_NO_BLOCK)
{
- fprintf(stderr, "cannot bind port TCP %u\n", host_ptr->port);
- return(MEMCACHED_CONNECTION_BIND_FAILURE);
+ 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->recv_size)
+ {
+ setsockopt(ptr->hosts[server_key].fd, SOL_SOCKET, SO_SNDBUF,
+ &ptr->recv_size, (socklen_t)sizeof(int));
}
/* connect to server */
- if (connect(ptr->fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
+test_connect:
+ if (connect(ptr->hosts[server_key].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
{
- fprintf(stderr, "cannot connect to host '%s' (%u) (error: %s)\n", host_ptr->hostname,
- host_ptr->port,
- strerror(errno));
- return MEMCACHED_HOST_LOCKUP_FAILURE;
+ 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->my_errno= errno;
+ return MEMCACHED_ERRNO;
+ }
+ ptr->connected++;
}
+ WATCHPOINT_ASSERT(ptr->hosts[server_key].stack_responses == 0);
}
- ptr->connected= 1;
-
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)
+ return MEMCACHED_SUCCESS;
+
+ if (!ptr->hosts)
+ return MEMCACHED_NO_SERVERS;
+
+ /* We need to clean up the multi startup piece */
+ if (server_key)
+ rc= memcached_real_connect(ptr, server_key);
+ else
+ {
+ unsigned int x;
+
+ for (x= 0; x < ptr->number_of_hosts; x++)
+ {
+ memcached_return possible_rc;
+
+ possible_rc= memcached_real_connect(ptr, x);
+ rc= MEMCACHED_SUCCESS;
+
+ if (possible_rc != MEMCACHED_SUCCESS)
+ rc= MEMCACHED_SOME_ERRORS;
+ }
+ }
+ LIBMEMCACHED_MEMCACHED_CONNECT_END();
+
+ return rc;
+}