148 lines
2.7 KiB
C
148 lines
2.7 KiB
C
|
/*
|
||
|
|
EthernetServerStream.h
|
||
|
|
|
||
|
|
Copyright (C) 2017 Marc Josef Pees. All rights reserved.
|
||
|
|
|
||
|
|
This library is free software; you can redistribute it and/or
|
||
|
|
modify it under the terms of the GNU Lesser General Public
|
||
|
|
License as published by the Free Software Foundation; either
|
||
|
|
version 2.1 of the License, or (at your option) any later version.
|
||
|
|
|
||
|
|
See file LICENSE.txt for further informations on licensing terms.
|
||
|
|
|
||
|
|
Last updated July 10th, 2017
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef ETHERNETSERVERSTREAM_H
|
||
|
|
#define ETHERNETSERVERSTREAM_H
|
||
|
|
|
||
|
|
#include <inttypes.h>
|
||
|
|
#include <Stream.h>
|
||
|
|
#include <Ethernet.h>
|
||
|
|
|
||
|
|
//#define SERIAL_DEBUG
|
||
|
|
#include "firmataDebug.h"
|
||
|
|
|
||
|
|
class EthernetServerStream : public Stream
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
EthernetServerStream(IPAddress localip, uint16_t port);
|
||
|
|
int available();
|
||
|
|
int read();
|
||
|
|
int peek();
|
||
|
|
void flush();
|
||
|
|
size_t write(uint8_t);
|
||
|
|
void maintain(IPAddress localip);
|
||
|
|
|
||
|
|
private:
|
||
|
|
EthernetClient client;
|
||
|
|
IPAddress localip;
|
||
|
|
uint16_t port;
|
||
|
|
bool connected;
|
||
|
|
bool maintain();
|
||
|
|
void stop();
|
||
|
|
|
||
|
|
protected:
|
||
|
|
EthernetServer server = EthernetServer(3030);
|
||
|
|
bool listening = false;
|
||
|
|
bool connect_client();
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* EthernetServerStream.cpp
|
||
|
|
* Copied here as a hack to linker issues with 3rd party board packages that don't properly
|
||
|
|
* implement the Arduino network APIs.
|
||
|
|
*/
|
||
|
|
EthernetServerStream::EthernetServerStream(IPAddress localip, uint16_t port)
|
||
|
|
: localip(localip),
|
||
|
|
port(port),
|
||
|
|
connected(false)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
bool EthernetServerStream::connect_client()
|
||
|
|
{
|
||
|
|
if ( connected )
|
||
|
|
{
|
||
|
|
if ( client && client.connected() ) return true;
|
||
|
|
stop();
|
||
|
|
}
|
||
|
|
|
||
|
|
EthernetClient newClient = server.available();
|
||
|
|
if ( !newClient ) return false;
|
||
|
|
client = newClient;
|
||
|
|
connected = true;
|
||
|
|
DEBUG_PRINTLN("Connected");
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
EthernetServerStream::available()
|
||
|
|
{
|
||
|
|
return maintain() ? client.available() : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
EthernetServerStream::read()
|
||
|
|
{
|
||
|
|
return maintain() ? client.read() : -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
EthernetServerStream::peek()
|
||
|
|
{
|
||
|
|
return maintain() ? client.peek() : -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
void EthernetServerStream::flush()
|
||
|
|
{
|
||
|
|
if (maintain())
|
||
|
|
client.flush();
|
||
|
|
}
|
||
|
|
|
||
|
|
size_t
|
||
|
|
EthernetServerStream::write(uint8_t c)
|
||
|
|
{
|
||
|
|
return maintain() ? client.write(c) : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
EthernetServerStream::maintain(IPAddress localip)
|
||
|
|
{
|
||
|
|
// ensure the local IP is updated in the case that it is changed by the DHCP server
|
||
|
|
if (this->localip != localip) {
|
||
|
|
this->localip = localip;
|
||
|
|
if (connected)
|
||
|
|
stop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
EthernetServerStream::stop()
|
||
|
|
{
|
||
|
|
if(client)
|
||
|
|
{
|
||
|
|
client.stop();
|
||
|
|
}
|
||
|
|
connected = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool
|
||
|
|
EthernetServerStream::maintain()
|
||
|
|
{
|
||
|
|
if (connect_client()) return true;
|
||
|
|
|
||
|
|
stop();
|
||
|
|
|
||
|
|
if(!listening)
|
||
|
|
{
|
||
|
|
server = EthernetServer(port);
|
||
|
|
server.begin();
|
||
|
|
listening = true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* ETHERNETSERVERSTREAM_H */
|