Retro68/LaunchAPPL/Server/OpenTptStream.cc

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2019-01-23 18:41:12 +00:00
/*
Copyright 2019 Wolfgang Thaller.
This file is part of Retro68.
Retro68 is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Retro68 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Retro68. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ConditionalMacros.h>
#if TARGET_API_MAC_CARBON
#define OTCARBONAPPLICATION 1
#endif
#include "OpenTptStream.h"
#include <OpenTransport.h>
#include <OpenTransportProviders.h>
#include <string.h>
#include <TextUtils.h>
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#ifdef DEBUG_CONSOLE
#include <stdio.h>
#endif
OpenTptStream::OpenTptStream()
{
InitOpenTransport();
OSStatus err;
listenerEndpoint = OTOpenEndpoint(OTCreateConfiguration(kTCPName), 0, nullptr, &err);
endpoint = nullptr;
InetAddress addr, retAddr;
OTInitInetAddress(&addr, 1984, 0);
TBind req, ret;
req.addr.len = sizeof(addr);
req.addr.buf = (UInt8*) &addr;
req.qlen = 1;
ret.addr.maxlen = sizeof(retAddr);
ret.addr.buf = (UInt8*) &retAddr;
listenerEndpoint->Bind(&req, &ret);
listenerEndpoint->SetSynchronous();
tryListening();
}
void OpenTptStream::tryListening()
{
if(connected)
DebugStr("\pDouble connect");
InetAddress clientAddr;
memset(&call, 0, sizeof(call));
call.addr.maxlen = sizeof(clientAddr);
call.addr.len = sizeof(clientAddr);
call.addr.buf = (UInt8*) &clientAddr;
OSStatus err;
listenerEndpoint->SetNonBlocking();
err = listenerEndpoint->Listen(&call);
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#ifdef DEBUG_CONSOLE
printf("Listen: err = %d.\n", (int)err);
#endif
if(err < 0)
return; // hopefully, kOTNoData
if(!endpoint)
{
endpoint = OTOpenEndpoint(OTCreateConfiguration(kTCPName), 0, nullptr, &err);
endpoint->SetSynchronous();
}
listenerEndpoint->SetBlocking();
err = listenerEndpoint->Accept(endpoint, &call);
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#ifdef DEBUG_CONSOLE
printf("Accept: err = %d.\n", (int)err);
#endif
endpoint->SetNonBlocking();
connected = true;
tryReading();
}
OpenTptStream::~OpenTptStream()
{
if(endpoint)
{
endpoint->SetNonBlocking();
if(connected)
endpoint->SndDisconnect(&call);
endpoint->Unbind();
OTCloseProvider(endpoint);
}
listenerEndpoint->SetNonBlocking();
listenerEndpoint->Unbind();
OTCloseProvider(listenerEndpoint);
CloseOpenTransport();
}
void OpenTptStream::write(const void* p, size_t n)
{
endpoint->SetBlocking();
endpoint->Snd((void*)p, n, 0);
endpoint->SetNonBlocking();
}
void OpenTptStream::tryReading()
{
OTResult result;
OTFlags flags;
do
{
result = endpoint->Rcv(readBuffer, kReadBufferSize, &flags);
if(result > 0)
{
notifyReceive(readBuffer, result);
}
} while(result > 0);
}
void OpenTptStream::idle()
{
OSStatus err;
if(connected)
{
switch(endpoint->Look())
{
case T_DISCONNECT:
endpoint->RcvDisconnect(nullptr);
connected = false;
tryListening();
break;
case T_ORDREL:
err = endpoint->RcvOrderlyDisconnect();
if(err == noErr)
endpoint->SndOrderlyDisconnect();
connected = false;
tryListening();
break;
case T_DATA:
tryReading();
break;
}
}
else
{
switch(listenerEndpoint->Look())
{
case T_LISTEN:
tryListening();
break;
}
}
}