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cwMdns.cpp : Many changes to investigate MC Mix protocol.

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This commit is contained in:
kpl 2020-02-12 13:44:06 -05:00
parent 969f1778fd
commit 107a6b7756
1 changed files with 94 additions and 82 deletions
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106
cwMdns.cpp
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@ -1029,6 +1029,21 @@ namespace cw
return rc; return rc;
} }
rc_t send_heart_beat( mdns_app_t* app, socket::handle_t sockH )
{
rc_t rc = kOkRC;
unsigned char buf[] = { 0x03,0x00,0x00,0x00 };
unsigned bufByteN = sizeof(buf);
if((rc = socket::send( sockH, buf, bufByteN )) != kOkRC )
{
error(&app->mdns,"Send failed.");
}
return rc;
}
bool tcpReceiveCallback( void* arg ) bool tcpReceiveCallback( void* arg )
{ {
mdns_app_t* app = static_cast<mdns_app_t*>(arg); mdns_app_t* app = static_cast<mdns_app_t*>(arg);
@ -1036,85 +1051,70 @@ namespace cw
char buf[ app->recvBufByteN ]; char buf[ app->recvBufByteN ];
unsigned readByteN = 0; unsigned readByteN = 0;
rc_t rc = kOkRC; rc_t rc = kOkRC;
time::spec_t t1;
if( !socket::isConnected(sockH) ) if( !socket::isConnected(sockH) )
{ {
if((rc = socket::accept( sockH )) == kOkRC ) if((rc = socket::accept( sockH )) == kOkRC )
{ {
log(&app->mdns,"TCP connected.\n"); printf("TCP connected.\n");
} }
} }
else else
{ {
if((rc = socket::recieve( sockH, buf, app->recvBufByteN, &readByteN, nullptr )) == kOkRC || rc == kTimeOutRC ) if((rc = socket::receive( sockH, buf, app->recvBufByteN, &readByteN, nullptr )) == kOkRC || rc == kTimeOutRC )
{
if( rc == kTimeOutRC )
{ {
//printf("."); }
//fflush(stdout); else
if( readByteN > 0 )
//printf("msg: %i\n",msg_idx++); {
//print_hex(buf,readByteN); unsigned* h = (unsigned*)buf;
if( readByteN > 0 && app->protocolState == 0) unsigned id = h[0];
switch( app->protocolState )
{
case 0:
if( id == 10 )
{ {
if( app->protocolState == 0 )
send_response1(app,sockH); send_response1(app,sockH);
sleepMs(20);
send_heart_beat(app,sockH);
app->protocolState+=1; app->protocolState+=1;
printf("PROTO:%i\n",app->protocolState);
} }
else break;
case 1:
{ {
if( app->protocolState == 1 ) if( buf[0] == 0x0c )
{ {
send_response2(app,sockH); send_response2(app,sockH);
app->protocolState+=1; app->protocolState+=1;
printf("PROTO:%i\n",app->protocolState);
}
else
{
if( app->protocolState == 2 )
{
time::get(app->t0); time::get(app->t0);
//send_txt(app);
app->protocolState+=1;
printf("PROTO:%i\n",app->protocolState);
} }
else }
{ break;
if( app->protocolState > 2 && app->txtXmtN < 20 )
{
time::spec_t t1; case 2:
time::get(t1);
if( time::elapsedMs( &app->t0, &t1 ) >= 2500 )
{ {
//send_txt(app); time::get(t1);
app->txtXmtN+=1; if( time::elapsedMs( &app->t0, &t1 ) >= 4000 )
printf("TXT:%i\n",app->txtXmtN); {
send_heart_beat(app,sockH);
app->t0 = t1; app->t0 = t1;
} }
} }
} break;
}
}
// if the server disconnects then recvBufByteN
if( isConnected( sockH ) )
{
//log(&app->mdns,"TCP disconnected.");
}
else
{
// handle recv'd TCP messages here.
//send_response( app, sockH );
} }
} }
}
} }
return true; return true;
} }
rc_t sendMsg1( mdns_app_t* p ) rc_t sendMsg1( mdns_app_t* p )
{ {
rc_t rc = kOkRC; rc_t rc = kOkRC;
@ -1174,6 +1174,7 @@ namespace cw
else else
{ {
/* THIS MESSAGE IS NOT NECESSARY
char* buf0 = alloc_msg( &bufByteN, transId, 0, char* buf0 = alloc_msg( &bufByteN, transId, 0,
kQuestionRecdTId, "MC Mix - 1._EuConProxy._tcp.local", kANY_DnsTId, kInClassFl, 0, 0, nullptr, kQuestionRecdTId, "MC Mix - 1._EuConProxy._tcp.local", kANY_DnsTId, kInClassFl, 0, 0, nullptr,
kNameServerRecdTId, "\xc0\x0c", kSRV_DnsTId, kInClassFl, 120, 49168, "Euphonix-MC-38C9863744E7.local", kNameServerRecdTId, "\xc0\x0c", kSRV_DnsTId, kInClassFl, 120, 49168, "Euphonix-MC-38C9863744E7.local",
@ -1185,6 +1186,7 @@ namespace cw
free(buf0); free(buf0);
sleepMs(500); sleepMs(500);
*/
bufByteN = 0; bufByteN = 0;
@ -1196,6 +1198,15 @@ namespace cw
kAnswerRecdTId, "_services._dns-sd._udp.local", kPTR_DnsTId, kInClassFl, 4500, 0, "\xc0\x17", kAnswerRecdTId, "_services._dns-sd._udp.local", kPTR_DnsTId, kInClassFl, 4500, 0, "\xc0\x17",
kInvalidRecdTId ); kInvalidRecdTId );
/*
char* buf = alloc_msg( &bufByteN, transId, flags,
kAnswerRecdTId, "MC Mix._EuConProxy._tcp.local", kSRV_DnsTId, kFlushClassFl | kInClassFl, 120, 49168, "Euphonix-MC-38C9863744E7.local",
kAnswerRecdTId, "\xc0\x3b", kA_DnsTId, kFlushClassFl | kInClassFl, 120, addr.sin_addr, nullptr,
kAnswerRecdTId, "\xc0\x13", kPTR_DnsTId, kInClassFl, 4500, 0, "\xc0\x0c",
kAnswerRecdTId, "\xc0\x0c", kTXT_DnsTId, kFlushClassFl | kInClassFl, 4500, 0, "lmac=38-C9-86-37-44-E7\ndummy=1",
kAnswerRecdTId, "_services._dns-sd._udp.local", kPTR_DnsTId, kInClassFl, 4500, 0, "\xc0\x13",
kInvalidRecdTId );
*/
//print_hex(buf,bufByteN); //print_hex(buf,bufByteN);
//parse_msg( nullptr, buf, bufByteN ); //parse_msg( nullptr, buf, bufByteN );
@ -1256,7 +1267,7 @@ cw::rc_t cw::net::mdns::test()
rc_t rc; rc_t rc;
socket::portNumber_t mdnsPort = 5353; socket::portNumber_t mdnsPort = 5353;
socket::portNumber_t tcpPort = 49168; socket::portNumber_t tcpPort = 49168;
unsigned udpTimeOutMs = 0; // if timeOutMs==0 server uses recv_from() unsigned udpTimeOutMs = 50; // if timeOutMs==0 server uses recv_from()
unsigned tcpTimeOutMs = 50; unsigned tcpTimeOutMs = 50;
const unsigned sbufN = 31; const unsigned sbufN = 31;
char sbuf[ sbufN+1 ]; char sbuf[ sbufN+1 ];
@ -1272,6 +1283,7 @@ cw::rc_t cw::net::mdns::test()
app.mdnsH, app.mdnsH,
mdnsPort, mdnsPort,
socket::kNonBlockingFl | socket::kReuseAddrFl | socket::kReusePortFl | socket::kMultiCastTtlFl | socket::kMultiCastLoopFl, socket::kNonBlockingFl | socket::kReuseAddrFl | socket::kReusePortFl | socket::kMultiCastTtlFl | socket::kMultiCastLoopFl,
srv::kUseRecvFromFl,
udpReceiveCallback, udpReceiveCallback,
&app, &app,
app.recvBufByteN, app.recvBufByteN,