src/libtransport/transport_client.c

   1 #include "opensrf/transport_client.h"
   2
   3
   4 //int main( int argc, char** argv );
   5
   6 /*
   7 int main( int argc, char** argv ) {
   8
   9         transport_message* recv;
  10         transport_message* send;
  11
  12         transport_client* client = client_init( "spacely.georgialibraries.org", 5222 );
  13
  14         // try to connect, allow 15 second connect timeout
  15         if( client_connect( client, "admin", "asdfjkjk", "system", 15 ) ) {
  16                 printf("Connected...\n");
  17         } else {
  18                 printf( "NOT Connected...\n" ); exit(99);
  19         }
  20
  21         while( (recv = client_recv( client, -1 )) ) {
  22
  23                 if( recv->body ) {
  24                         int len = strlen(recv->body);
  25                         char buf[len + 20];
  26                         memset( buf, 0, len + 20);
  27                         sprintf( buf, "Echoing...%s", recv->body );
  28                         send = message_init( buf, "Echoing Stuff", "12345", recv->sender, "" );
  29                 } else {
  30                         send = message_init( " * ECHOING * ", "Echoing Stuff", "12345", recv->sender, "" );
  31                 }
  32
  33                 if( send == NULL ) { printf("something's wrong"); }
  34                 client_send_message( client, send );
  35
  36                 message_free( send );
  37                 message_free( recv );
  38         }
  39
  40         printf( "ended recv loop\n" );
  41
  42         return 0;
  43
  44 }
  45 */
  46
  47
  48 transport_client* client_init( char* server, int port, int component ) {
  49
  50         if(server == NULL) return NULL;
  51
  52         /* build and clear the client object */
  53         size_t c_size = sizeof( transport_client);
  54         transport_client* client = (transport_client*) safe_malloc( c_size );
  55
  56         /* build and clear the message list */
  57         size_t l_size = sizeof( transport_message_list );
  58         client->m_list = (transport_message_list*) safe_malloc( l_size );
  59
  60         client->m_list->type = MESSAGE_LIST_HEAD;
  61         client->session = init_transport( server, port, client, component );
  62
  63
  64         if(client->session == NULL) {
  65                 fatal_handler( "client_init(): Out of Memory");
  66                 return NULL;
  67         }
  68         client->session->message_callback = client_message_handler;
  69
  70         return client;
  71 }
  72
  73 int client_connect( transport_client* client,
  74                 char* username, char* password, char* resource,
  75                 int connect_timeout, enum TRANSPORT_AUTH_TYPE  auth_type ) {
  76         if(client == NULL) return 0;
  77         return session_connect( client->session, username,
  78                         password, resource, connect_timeout, auth_type );
  79 }
  80
  81 int client_disconnect( transport_client* client ) {
  82         if( client == NULL ) { return 0; }
  83         return session_disconnect( client->session );
  84 }
  85
  86 int client_connected( transport_client* client ) {
  87         if(client == NULL) return 0;
  88         return client->session->state_machine->connected;
  89 }
  90
  91 int client_send_message( transport_client* client, transport_message* msg ) {
  92         if(client == NULL) return 0;
  93         return session_send_msg( client->session, msg );
  94 }
  95
  96
  97 transport_message* client_recv( transport_client* client, int timeout ) {
  98         if( client == NULL ) { return NULL; }
  99
 100         transport_message_node* node;
 101         transport_message* msg;
 102
 103
 104         /* see if there are any message in the messages queue */
 105         if( client->m_list->next != NULL ) {
 106                 /* pop off the first one... */
 107                 node = client->m_list->next;
 108                 client->m_list->next = node->next;
 109                 msg = node->message;
 110                 free( node );
 111                 return msg;
 112         }
 113
 114         if( timeout == -1 ) {  /* wait potentially forever for data to arrive */
 115
 116                 while( client->m_list->next == NULL ) {
 117                         if( ! session_wait( client->session, -1 ) ) {
 118                                 return NULL;
 119                         }
 120                 }
 121
 122         } else { /* wait at most timeout seconds */
 123
 124
 125                 /* if not, loop up to 'timeout' seconds waiting for data to arrive */
 126                 time_t start = time(NULL);
 127                 time_t remaining = (time_t) timeout;
 128
 129                 int counter = 0;
 130
 131                 int wait_ret;
 132                 while( client->m_list->next == NULL && remaining >= 0 ) {
 133
 134                         if( ! (wait_ret= session_wait( client->session, remaining)) )
 135                                 return NULL;
 136
 137                         ++counter;
 138
 139 #ifdef _ROUTER
 140                         // session_wait returns -1 if there is no more data and we're a router
 141                         if( remaining == 0 && wait_ret == -1 ) {
 142                                 break;
 143                         }
 144 #else
 145                         if( remaining == 0 ) // or infinite loop
 146                                 break;
 147 #endif
 148
 149                         remaining -= (int) (time(NULL) - start);
 150                 }
 151
 152         }
 153
 154         /* again, see if there are any messages in the message queue */
 155         if( client->m_list->next != NULL ) {
 156                 /* pop off the first one... */
 157                 node = client->m_list->next;
 158                 client->m_list->next = node->next;
 159                 msg = node->message;
 160                 free( node );
 161                 return msg;
 162         } else {
 163                 return NULL;
 164         }
 165 }
 166
 167 /* throw the message into the message queue */
 168 void client_message_handler( void* client, transport_message* msg ){
 169
 170         if(client == NULL) return;
 171         if(msg == NULL) return;
 172
 173         transport_client* cli = (transport_client*) client;
 174
 175         size_t len = sizeof(transport_message_node);
 176         transport_message_node* node =
 177                 (transport_message_node*) safe_malloc(len);
 178         node->type = MESSAGE_LIST_ITEM;
 179         node->message = msg;
 180
 181
 182         /* find the last node and put this onto the end */
 183         transport_message_node* tail = cli->m_list;
 184         transport_message_node* current = tail->next;
 185
 186         while( current != NULL ) {
 187                 tail = current;
 188                 current = current->next;
 189         }
 190         tail->next = node;
 191 }
 192
 193
 194 int client_free( transport_client* client ){
 195         if(client == NULL) return 0;
 196
 197         session_free( client->session );
 198         transport_message_node* current = client->m_list->next;
 199         transport_message_node* next;
 200
 201         /* deallocate the list of messages */
 202         while( current != NULL ) {
 203                 next = current->next;
 204                 message_free( current->message );
 205                 free(current);
 206                 current = next;
 207         }
 208
 209         free( client->m_list );
 210         free( client );
 211         return 1;
 212 }
 213