<html> <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-15"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hi, I'm currenting writing a project in which two nodes communicate each other and the controlling agent sends data to the other one. I've implementing my communication structure using XMPP and I'm able to let my nodes communicate. You can find my project on GitHub: <a href="https://github.com/marcoxsurf/NiceStrophe/">https://github.com/marcoxsurf/NiceStrophe/</a> Now I have to let the controlling node to share a file to the controlled one. I have followed this discussion <a href="http://lists.freedesktop.org/archives/nice/2012-September/000633.html">http://lists.freedesktop.org/archives/nice/2012-September/000633.html</a> but I have still problems. Here it is the code that I'm testing: ----------- / Connect to the signals g_signal_connect(agent, "candidate-gathering-done",G_CALLBACK(cb_candidate_gathering_done), NULL); g_signal_connect(agent, "component-state-changed", G_CALLBACK(cb_component_state_changed), NULL); if (controlling){ //find out file size stat("test.txt", &sstr); sent_byte=0; total_byte=sstr.st_size; file = fopen("test.txt", "rb"); g_signal_connect(agent, "reliable-transport-writable", G_CALLBACK(writable_cb), file); } else{ file_received = fopen("testFile-received.txt", "ab"); } ----------- void cb_nice_recv(NiceAgent * agent, guint stream_id, guint component_id, guint len, gchar * buf, gpointer user_data) { if (len == 1 && buf[0] == '\0'){ if (!file_received){ fclose(file_received); } g_main_loop_quit (gloop); return; } if (file_received) { int writen = fwrite(buf, sizeof(char), len, file_received); printf("RECEIVED FILE: buf size: %d , writen size: %d\n", len, writen); } else { perror("ERROR OPENING FILE\n"); } } void writable_cb(NiceAgent *agent, guint sid, guint cid, gpointer data) { if (!file){ file = data; } char *file_chunk = malloc(CHUNK_SIZE); size_t nbytes = 0; int sent = 0; while ((nbytes = fread(file_chunk, sizeof(char), CHUNK_SIZE, file)) > 0) { //printf("SENDING: %s\n",file_chunk); //Returns: The number of bytes sent sent = nice_agent_send(agent, stream_id, NICE_COMPONENT_TYPE_RTP,nbytes, file_chunk); /* If return value is -1 it means nothing was sent */ if (sent==-1) sent = 0; sent_byte+=sent; printf("SENT FILE: chunk size: %zu send result: %d.\n",nbytes,sent); if (sent < nbytes) { /* seek back to the last byte that was actually sent, so it gets read on the next pass */ fseek(file, -(nbytes - sent), SEEK_CUR); /* break and exit the function, wait for the next signal callback to continue sending the rest of the data */ break; } } if (sent_byte==total_byte){ printf("END"); nice_agent_send(agent, stream_id, 1, 1, "\0"); g_main_loop_quit (gloop); } } I've tried this code in a local env and it's all working fine with files of different size. (dd if=/dev/urandom of=test.txt count=1024 ibs=1 ---> 1K) The problems come when i want to use my code in real life. I've tried to send: <ul> <li>40-byte-size file: OK</li> <li>1KB-size file: OK</li> <li>+2KB-size file: problems </li> </ul> Output Controlling node with 2K size: waiting for state READY or FAILED signal...SIGNAL: state changed 1 1 connected[3] SENT FILE: chunk size: 1024 send result: 1024. SENT FILE: chunk size: 1024 send result: 1024. Output controlled node: RECEIVED FILE: buf size: 1024 , writen size: 1024 .... hunging up.... What am I missing? Could you help me please? </body> </html>