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cwEuCon.h/cpp : Added heart-beat logic.

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This commit is contained in:
kevin.larke 2020-04-17 11:16:52 -04:00
parent 03d24fbbdc
commit e9ca9b08ca
2 changed files with 71 additions and 26 deletions
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96
cwEuCon.cpp
View File

@ -16,6 +16,8 @@
#include "dns_sd/dns_sd_const.h"
#define HEART_BEAT "\x04\x00\x00\x00"
#define RESPONSE_1 "\x0a\x00\x00\x00\x6d\x62\x70\x31\x39\x00\x00\x00\x44\x45" \
"\x00\x00\x78\x3f\x39\xe5\xfe\x7f\x00\x00\xc0\x32\x17\x49\xe2\x7f" \
"\x00\x00\xe0\x7d\x2e\x01\x00\x60\x00\x00\x00\x00\x00\x00\x00\x00" \
@ -320,7 +322,8 @@ namespace cw
unsigned sockUserId;
unsigned protoState;
unsigned cbCnt;
time::spec_t t0;
time::spec_t nextRecvHbTs;
time::spec_t nextSendHbTs;
struct fbank_str* link;
uint32_t remoteAddr;
} fbank_t;
@ -332,7 +335,8 @@ namespace cw
fbank_t* fbankL; // List of fader banks
unsigned maxFaderBankN; // maximum number of fader banks
unsigned sockTimeOutMs; // socket time out
unsigned faderTcpPort; // Fader TCP port TODO: we shouuld be getting this from the MDNS SRV record
unsigned faderTcpPort; // Fader TCP port TODO: we shouuld be getting this from the MDNS SRV record
unsigned heartBeatPeriodMs;
} eucon_t;
inline eucon_t* _handleToPtr( handle_t h )
@ -374,14 +378,29 @@ namespace cw
return rc;
}
rc_t _send_response( fbank_t* fb, const char* packet, unsigned packetN )
rc_t _disconnect( fbank_t* fb )
{
rc_t rc = kOkRC;
if((rc = sock::destroy(fb->eucon->sockMgrH, fb->sockUserId)) != kOkRC )
rc = cwLogError(rc,"Socket destroy failed on disconnect attempt on fader bank index:%i.",fb->fbIndex);
fb->protoState = kSendHandshake_0_Id;
return rc;
}
rc_t _send_response( fbank_t* fb, const char* buf, unsigned bufByteN )
{
rc_t rc = kOkRC;
// send the initial handshake
if((rc = sock::send( fb->eucon->sockMgrH, fb->sockUserId, kInvalidId, packet, packetN )) != kOkRC )
if((rc = sock::send( fb->eucon->sockMgrH, fb->sockUserId, kInvalidId, buf, bufByteN )) != kOkRC )
{
rc = cwLogError(rc,"TCP '%s' send failed on fader bank index:%i.",fb->fbIndex);
rc = cwLogError(rc,"TCP '%s' send failed on fader bank index:%i. Disconnecting.",fb->fbIndex);
_disconnect(fb);
}
return rc;
@ -515,11 +534,21 @@ namespace cw
break;
case kResponse_4_B_Id:
_send_response(fb,RESPONSE_4_B,sizeof(RESPONSE_4_B)-1);
_send_response(fb,RESPONSE_4_B,sizeof(RESPONSE_4_B)-1);
fb->protoState = kRunning_Id;
// set the initial next heart-beat times for this fader bank
time::futureMs(fb->nextSendHbTs,fb->eucon->heartBeatPeriodMs);
time::futureMs(fb->nextRecvHbTs,fb->eucon->heartBeatPeriodMs*2);
break;
case kRunning_Id:
// if this is a heart-beat
if( ((uint8_t*)data)[0] == 0x03 )
time::futureMs(fb->nextRecvHbTs,fb->eucon->heartBeatPeriodMs+1000);
printf("%i : Rcv: %i : ",fb->fbIndex, dataByteCnt );
for(unsigned i=0; i<dataByteCnt; ++i)
printf("0x%02x ",((uint8_t*)data)[i]);
@ -527,15 +556,6 @@ namespace cw
}
fb->cbCnt+=1;
if( fb->cbCnt % 20 == 0 )
{
time::spec_t t1;
time::get(t1);
//unsigned ms = time::elapsedMs( &p->t0, &t1 );
//printf("cb: %i %i\n",p->cbCnt,ms);
}
}
rc_t _on_McMix_DNS_SD_TXT( eucon_t* p, const char* numberText, unsigned numberTextCharN, const struct sockaddr_in* fromAddr )
@ -581,7 +601,7 @@ namespace cw
return cwLogError(rc,"The TCP socket for fader bank index %i failed. ", fbIndex);
fb->remoteAddr = fromAddr->sin_addr.s_addr;
// Send the initial handshake to the fader bank
_sendHandshake_0( fb );
@ -662,9 +682,10 @@ cw::rc_t cw::eucon::create( handle_t& hRef, const args_t& args )
goto errLabel;
}
p->maxFaderBankN = args.maxFaderBankN;
p->sockTimeOutMs = args.sockTimeOutMs;
p->faderTcpPort = args.faderTcpPort;
p->maxFaderBankN = args.maxFaderBankN;
p->sockTimeOutMs = args.sockTimeOutMs;
p->faderTcpPort = args.faderTcpPort;
p->heartBeatPeriodMs = args.heartBeatPeriodMs;
hRef.set(p);
errLabel:
@ -692,10 +713,12 @@ cw::rc_t cw::eucon::destroy( handle_t& hRef )
cw::rc_t cw::eucon::exec( handle_t h, unsigned sockTimeOutMs )
{
rc_t rc = kOkRC;
eucon_t* p = _handleToPtr(h);
unsigned totalReadByteN = 0;
rc_t rc = kOkRC;
eucon_t* p = _handleToPtr(h);
unsigned totalReadByteN = 0;
time::spec_t t0;
// poll sockets for incoming EuCon messages
if((rc = sock::receive_all(p->sockMgrH, sockTimeOutMs, totalReadByteN )) != kOkRC )
return rc;
@ -707,9 +730,30 @@ cw::rc_t cw::eucon::exec( handle_t h, unsigned sockTimeOutMs )
break;
default:
cwLogError(rc,"EuCon network receive failed.");
rc = cwLogError(rc,"EuCon network receive failed.");
};
// get the current time
time::get(t0);
// check the health of each fader bank
for(fbank_t* fb = p->fbankL; fb!=nullptr; fb=fb->link)
if( fb->protoState == kRunning_Id )
{
// has it been more than 'heartBeatPerioMs' millisecnods since we received a heart beat from this fader bank
if( time::isGTE( t0, fb->nextRecvHbTs ) )
{
cwLogInfo("Missed heart-beat disconnecting fader bank index %i.",fb->fbIndex );
_disconnect(fb);
}
// is it time to send a heart-beat to this fader bank
if( time::isGTE( t0, fb->nextSendHbTs ) )
{
_send_response( fb, HEART_BEAT, sizeof(HEART_BEAT)-1 );
time::futureMs(fb->nextSendHbTs,fb->eucon->heartBeatPeriodMs);
}
}
return rc;
@ -820,7 +864,7 @@ cw::rc_t cw::eucon::test()
args.maxFaderBankN = 8;
args.faderTcpPort = 49168;
args.maxSockN = 50;
args.heartBeatPeriodMs = 4000;
if((rc = appBegin(args,app)) != kOkRC )
return 1;

1
cwEuCon.h
View File

@ -23,6 +23,7 @@ namespace cw
sock::portNumber_t faderTcpPort; // Fader TCP port (e.g. 49168)
unsigned maxSockN; // maximum number of socket to allow in the socket manager
unsigned maxFaderBankN; // maximum number of fader banks to support
unsigned heartBeatPeriodMs; // time between heart-beat messages from/to the fader banks
} args_t;
// Create the EuCon simulation manager.