// this is called for each ice candidate. if candidate is null, no additional candidates could be found.
void WebRTCOnIceCandidate(ILibWrapper_WebRTC_Connection webRTCConnection, struct sockaddr_in6* candidate) {
assert(webRTCConnection != NULL);
void* user_data = NULL;
libwebrtc_context* ctx = NULL;
libwebrtc_connection* conn = (libwebrtc_connection*)webRTCConnection;
ILibWrapper_WebRTC_Connection_GetUserData(webRTCConnection, (void**)&ctx, NULL, &user_data);
// no additional candidates found.
if( candidate == NULL )
return;
char* offer = ILibWrapper_WebRTC_Connection_AddServerReflexiveCandidateToLocalSDP( webRTCConnection, candidate );
if( offer == NULL ) {
ctx->callback(ctx, conn, NULL, LWRTC_CALLBACK_ERROR, user_data, NULL, 0 );
LOG("Offer failed, closing socket\n");
return;
}
free(offer);
char address[225];
ILibInet_ntop2((struct sockaddr*)candidate, address, 255);
const char* candidateFormat = "candidate:%d %d UDP %d %s %u typ host";
char buf[255] = {0};
snprintf(buf, sizeof(buf), candidateFormat, 0, 1, 2128609535-1, address, ntohs(candidate->sin6_port));
buf[sizeof(buf)-1] = 0;
ctx->callback(ctx, conn, NULL, LWRTC_CALLBACK_ICE_CANDIDATE, user_data, buf, strlen(buf) );
}
// If we launched this sample with "STUN", then this is called when a STUN candidate is found while setting an offer
void CandidateSink(ILibWrapper_WebRTC_Connection connection, struct sockaddr_in6* candidate)
{
printf(red"candidatesink!\n"rst);
SimpleRendezvousServer sender;
SimpleRendezvousServerToken token;
char *sdp = ILibWrapper_WebRTC_Connection_AddServerReflexiveCandidateToLocalSDP(connection, candidate);
ILibWrapper_WebRTC_Connection_GetUserData(connection, &sender, &token, NULL);
if(SimpleRendezvousServer_WebSocket_IsWebSocket(token)==0)
{
printf(red"ws is ws(token?)\n"rst);
SimpleRendezvousServer_Respond(sender, token, 1, sdp, strlen(sdp), ILibAsyncSocket_MemoryOwnership_CHAIN); // Send the SDP to the remote side
}
else
{
printf(red"not token?\n"rst);
SimpleRendezvousServer_WebSocket_Send(token, SimpleRendezvousServer_WebSocket_DataType_TEXT, sdp, strlen(sdp), ILibAsyncSocket_MemoryOwnership_CHAIN, SimpleRendezvousServer_FragmentFlag_Complete);
}
}
void PassiveCandidateSink(ILibWrapper_WebRTC_Connection connection, struct sockaddr_in6* candidate)
{
printf("While generating an offer?\n"rst);
SimpleRendezvousServer sender;
SimpleRendezvousServerToken token;
char *offer;
char *encodedOffer;
int encodedOfferLen;
char *h1;
ILibWrapper_WebRTC_Connection_GetUserData(connection, &sender, &token, (void**)&h1);
offer = ILibWrapper_WebRTC_Connection_AddServerReflexiveCandidateToLocalSDP(connection, candidate);
printf(green"ofer: \n %s\n"rst,offer);
encodedOfferLen = ILibBase64Encode((unsigned char*)offer, strlen(offer),(unsigned char**)&encodedOffer);
h1 = ILibString_Replace(passiveHtmlBody, passiveHtmlBodyLength, "/*{{{SDP}}}*/", 13, encodedOffer, encodedOfferLen);
free(offer);
free(encodedOffer);
SimpleRendezvousServer_Respond(sender, token, 1, h1, strlen(h1), ILibAsyncSocket_MemoryOwnership_CHAIN); // Send the SDP to the remote side
}
// Generate an udpated SDP offer containing the candidate specified
__declspec(dllexport) char* ILibWrapper_DLL_WebRTC_Connection_AddServerReflexiveCandidateToLocalSDP(ILibWrapper_WebRTC_Connection connection, struct sockaddr_in6* candidate)
{
return(ILibWrapper_WebRTC_Connection_AddServerReflexiveCandidateToLocalSDP(connection, candidate));
}