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* libscopehal                                                                                                          *
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* Copyright (c) 2012-2024 Andrew D. Zonenberg and contributors                                                         *
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/**
	@file
	@author Andrew D. Zonenberg
	@brief Implementation of SCPIUARTTransport
	@ingroup transports
 */

#include "scopehal.h"

using namespace std;

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Construction / destruction

SCPITwinLanTransport::SCPITwinLanTransport(const string& args)
	: SCPISocketTransport(args)
	, m_dataport(5026)
	, m_secondarysocket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
{
	//Figure out the data port number
	char hostname[128] = "";
	char hostname2[128] = "";
	unsigned int port = 0;
	unsigned int dport;
	if(4 == sscanf(args.c_str(), "%127[^:]:%u:%127[^:]%u", hostname, &port, hostname2, &dport))
		m_dataport = dport;
	else if(3 == sscanf(args.c_str(), "%127[^:]:%u:%u", hostname, &port, &dport))
	{
		m_dataport = dport;
		strncpy(hostname2, hostname, sizeof(hostname));
	}
	else if(2 == sscanf(args.c_str(), "%127[^:]:%u", hostname, &port))
	{
		m_dataport = port+1;
		strncpy(hostname2, hostname, sizeof(hostname));
	}

	//Connect the secondary socket
	LogDebug("Connecting to data plane socket\n");
	m_secondarysocket.Connect(hostname2, m_dataport);
	m_secondarysocket.DisableNagle();
}

SCPITwinLanTransport::~SCPITwinLanTransport()
{
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Discovery

string SCPITwinLanTransport::GetTransportName()
{
	return "twinlan";
}

string SCPITwinLanTransport::GetConnectionString()
{
	char tmp[256];
	snprintf(tmp, sizeof(tmp), "%s:%u:%u", m_hostname.c_str(), m_port, m_dataport);
	return string(tmp);
}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// Secondary socket I/O

size_t SCPITwinLanTransport::ReadRawData(size_t len, unsigned char* buf, std::function<void(float)> /*progress*/)
{
	if(m_secondarysocket.RecvLooped(buf, len))
		return len;
	else
		return 0;
}

void SCPITwinLanTransport::SendRawData(size_t len, const unsigned char* buf)
{
	m_secondarysocket.SendLooped(buf, len);
}
