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   memset(ptr->hosts, 0, sizeof(memcached_host_st) * (size_t)ptr->number_of_hosts);
  14   ptr->hosts[ptr->number_of_hosts].hostname=
  15     (char *)malloc(sizeof(char) * (strlen(hostname)+1));
  16   memset(ptr->hosts[ptr->number_of_hosts].hostname, 0, strlen(hostname)+1);
  17   memcpy(ptr->hosts[ptr->number_of_hosts].hostname, hostname, strlen(hostname));
  18   ptr->hosts[ptr->number_of_hosts].port= port;
  19   ptr->hosts[ptr->number_of_hosts].fd= -1;
  20   ptr->number_of_hosts++;
  21
  22   return MEMCACHED_SUCCESS;
  23 }
  24
  25 memcached_return memcached_connect(memcached_st *ptr)
  26 {
  27   unsigned int x;
  28   struct sockaddr_in localAddr, servAddr;
  29   struct hostent *h;
  30   memcached_host_st *host_ptr;
  31
  32   if (ptr->connected)
  33     return MEMCACHED_SUCCESS;
  34
  35   if (!ptr->hosts)
  36   {
  37     memcached_return rc;
  38     rc= memcached_server_add(ptr, NULL, 0);
  39
  40     if (rc != MEMCACHED_SUCCESS)
  41       return rc;
  42   }
  43
  44
  45   for (x= 0; x < ptr->number_of_hosts; x++)
  46   {
  47     if ((h= gethostbyname(ptr->hosts[x].hostname)) == NULL)
  48     {
  49       fprintf(stderr, "unknown host '%s'\n", ptr->hosts[x].hostname);
  50       return MEMCACHED_HOST_LOCKUP_FAILURE;
  51     }
  52
  53     servAddr.sin_family= h->h_addrtype;
  54     memcpy((char *) &servAddr.sin_addr.s_addr, h->h_addr_list[0], h->h_length);
  55     servAddr.sin_port = htons(ptr->hosts[x].port);
  56
  57     /* Create the socket */
  58     if ((ptr->hosts[0].fd= socket(AF_INET, SOCK_STREAM, 0)) < 0)
  59     {
  60       fprintf(stderr, "cannot open socket");
  61       return MEMCACHED_CONNECTION_SOCKET_CREATE_FAILURE;
  62     }
  63
  64
  65     /* bind any port number */
  66     localAddr.sin_family = AF_INET;
  67     localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
  68     localAddr.sin_port = htons(0);
  69
  70     if (bind(ptr->hosts[0].fd, (struct sockaddr *) &localAddr, sizeof(localAddr)) < 0)
  71     {
  72       fprintf(stderr, "cannot bind port TCP %u\n", ptr->hosts[x].port);
  73       return(MEMCACHED_CONNECTION_BIND_FAILURE);
  74     }
  75
  76     /* connect to server */
  77     if (connect(ptr->hosts[0].fd, (struct sockaddr *) &servAddr, sizeof(servAddr)) < 0)
  78     {
  79       fprintf(stderr, "cannot connect to host '%s' (%u)  (error: %s)\n", ptr->hosts[x].hostname,
  80               ptr->hosts[x].port,
  81               strerror(errno));
  82       return MEMCACHED_HOST_LOCKUP_FAILURE;
  83     }
  84   }
  85
  86   ptr->connected= 1;
  87
  88   return MEMCACHED_SUCCESS;
  89 }