git.m6w6.name Git - m6w6/libmemcached/blob - lib/memcached_connect.c

   1 #include <memcached.h>
   2
   3 memcached_return memcached_server_add(memcached_st *ptr, char *hostname, unsigned int port)
   4 {
   5   if (!port)
   6     port= MEMCACHED_DEFAULT_PORT;
   7
   8   if (!hostname)
   9     hostname= "localhost";
  10
  11
  12   ptr->hosts= (memcached_host_st *)realloc(ptr->hosts, sizeof(memcached_host_st) * (ptr->number_of_hosts+1));
  13   ptr->hosts[ptr->number_of_hosts].hostname=
  14     (char *)malloc(sizeof(char) * (strlen(hostname)+1));
  15   memset(ptr->hosts[ptr->number_of_hosts].hostname, 0, strlen(hostname)+1);
  16   memcpy(ptr->hosts[ptr->number_of_hosts].hostname, hostname, strlen(hostname));
  17   ptr->hosts[ptr->number_of_hosts].port= port;
  18   ptr->hosts[ptr->number_of_hosts].fd= -1;
  19   ptr->number_of_hosts++;
  20
  21   return MEMCACHED_SUCCESS;
  22 }
  23
  24 memcached_return memcached_connect(memcached_st *ptr)
  25 {
  26   unsigned int x;
  27   struct sockaddr_in localAddr, servAddr;
  28   struct hostent *h;
  29
  30   if (ptr->connected)
  31     return MEMCACHED_SUCCESS;
  32
  33   if (!ptr->hosts)
  34   {
  35     memcached_return rc;
  36     rc= memcached_server_add(ptr, NULL, 0);
  37
  38     if (rc != MEMCACHED_SUCCESS)
  39       return rc;
  40   }
  41
  42
  43   for (x= 0; x < ptr->number_of_hosts; x++)
  44   {
  45     if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
  46       return MEMCACHED_HOST_LOCKUP_FAILURE;
  47
  48     servAddr.sin_family= h->h_addrtype;
  49     memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
  50     servAddr.sin_port = htons(ptr->hosts[x].port);
  51
  52     /* Create the socket */
  53     if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
  54       return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
  55
  56
  57     /* bind any port number */
  58     localAddr.sin_family = AF_INET;
  59     localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  60     localAddr.sin_port = htons(0);
  61
  62     if (bind(ptr->hosts[0].fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
  63       return(MEMCACHED_CONNECTION_BIND_FAILURE);
  64
  65     /* connect to server */
  66     if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
  67       return MEMCACHED_HOST_LOCKUP_FAILURE;
  68   }
  69
  70   ptr->connected= 1;
  71
  72   return MEMCACHED_SUCCESS;
  73 }