src/libtransport/transport_client.c

   1 #include "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, char* unix_path, 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, unix_path, client, component );
  62
  63         client->session->message_callback = client_message_handler;
  64
  65         return client;
  66 }
  67
  68
  69 int client_connect( transport_client* client,
  70                 char* username, char* password, char* resource,
  71                 int connect_timeout, enum TRANSPORT_AUTH_TYPE  auth_type ) {
  72         if(client == NULL) return 0;
  73         return session_connect( client->session, username,
  74                         password, resource, connect_timeout, auth_type );
  75 }
  76
  77
  78 int client_disconnect( transport_client* client ) {
  79         if( client == NULL ) { return 0; }
  80         return session_disconnect( client->session );
  81 }
  82
  83 int client_connected( transport_client* client ) {
  84         if(client == NULL) return 0;
  85         return client->session->state_machine->connected;
  86 }
  87
  88 int client_send_message( transport_client* client, transport_message* msg ) {
  89         if(client == NULL) return 0;
  90         return session_send_msg( client->session, msg );
  91 }
  92
  93
  94 transport_message* client_recv( transport_client* client, int timeout ) {
  95         if( client == NULL ) { return NULL; }
  96
  97         transport_message_node* node;
  98         transport_message* msg;
  99
 100
 101         /* see if there are any message in the messages queue */
 102         if( client->m_list->next != NULL ) {
 103                 /* pop off the first one... */
 104                 node = client->m_list->next;
 105                 client->m_list->next = node->next;
 106                 msg = node->message;
 107                 free( node );
 108                 return msg;
 109         }
 110
 111         if( timeout == -1 ) {  /* wait potentially forever for data to arrive */
 112
 113                 while( client->m_list->next == NULL ) {
 114                 //      if( ! session_wait( client->session, -1 ) ) {
 115                         int x;
 116                         if( (x = session_wait( client->session, -1 )) ) {
 117                                 osrfLogWarning(OSRF_LOG_MARK, "session_wait returned failure code %d\n", x);
 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
 163         } else {
 164                 return NULL;
 165         }
 166 }
 167
 168 /* throw the message into the message queue */
 169 void client_message_handler( void* client, transport_message* msg ){
 170
 171         if(client == NULL) return;
 172         if(msg == NULL) return;
 173
 174         transport_client* cli = (transport_client*) client;
 175
 176         size_t len = sizeof(transport_message_node);
 177         transport_message_node* node =
 178                 (transport_message_node*) safe_malloc(len);
 179         node->type = MESSAGE_LIST_ITEM;
 180         node->message = msg;
 181
 182
 183         /* find the last node and put this onto the end */
 184         transport_message_node* tail = cli->m_list;
 185         transport_message_node* current = tail->next;
 186
 187         while( current != NULL ) {
 188                 tail = current;
 189                 current = current->next;
 190         }
 191         tail->next = node;
 192 }
 193
 194
 195 int client_free( transport_client* client ){
 196         if(client == NULL) return 0;
 197
 198         session_free( client->session );
 199         transport_message_node* current = client->m_list->next;
 200         transport_message_node* next;
 201
 202         /* deallocate the list of messages */
 203         while( current != NULL ) {
 204                 next = current->next;
 205                 message_free( current->message );
 206                 free(current);
 207                 current = next;
 208         }
 209
 210         free( client->m_list );
 211         free( client );
 212         return 1;
 213 }
 214