106 lines
2.4 KiB
C++
106 lines
2.4 KiB
C++
/*
|
|
WiFiClientStream.h
|
|
|
|
An Arduino Stream that wraps an instance of a WiFiClient. For use
|
|
with legacy Arduino WiFi shield and other boards and shields that
|
|
are compatible with the Arduino WiFi library.
|
|
|
|
Copyright (C) 2016 Jens B. 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.
|
|
|
|
Parts of this class are based on
|
|
|
|
- EthernetClientStream - Copyright (C) 2013 Norbert Truchsess. All rights reserved.
|
|
|
|
published under the same license.
|
|
|
|
Last updated April 23rd, 2016
|
|
*/
|
|
|
|
#ifndef WIFI_CLIENT_STREAM_H
|
|
#define WIFI_CLIENT_STREAM_H
|
|
|
|
#include "WiFiStream.h"
|
|
|
|
#define MILLIS_RECONNECT 5000
|
|
|
|
class WiFiClientStream : public WiFiStream
|
|
{
|
|
protected:
|
|
uint32_t _time_connect = 0;
|
|
|
|
/**
|
|
* check if TCP client is connected
|
|
* @return true if connected
|
|
*/
|
|
virtual inline bool connect_client()
|
|
{
|
|
if ( _connected )
|
|
{
|
|
if ( _client && _client.connected() ) return true;
|
|
stop();
|
|
}
|
|
|
|
// active TCP connect
|
|
if ( WiFi.status() == WL_CONNECTED )
|
|
{
|
|
// if the client is disconnected, try to reconnect every 5 seconds
|
|
if ( millis() - _time_connect >= MILLIS_RECONNECT )
|
|
{
|
|
_connected = _client.connect( _remote_ip, _port );
|
|
if ( !_connected )
|
|
{
|
|
_time_connect = millis();
|
|
}
|
|
else if ( _currentHostConnectionCallback )
|
|
{
|
|
(*_currentHostConnectionCallback)(HOST_CONNECTION_CONNECTED);
|
|
}
|
|
}
|
|
}
|
|
|
|
return _connected;
|
|
}
|
|
|
|
public:
|
|
/**
|
|
* create a WiFi stream with a TCP client
|
|
*/
|
|
WiFiClientStream(IPAddress server_ip, uint16_t server_port) : WiFiStream(server_ip, server_port) {}
|
|
|
|
/**
|
|
* maintain WiFi and TCP connection
|
|
* @return true if WiFi and TCP connection are established
|
|
*/
|
|
virtual inline bool maintain()
|
|
{
|
|
return connect_client();
|
|
}
|
|
|
|
/**
|
|
* stop client connection
|
|
*/
|
|
virtual inline void stop()
|
|
{
|
|
if ( _client)
|
|
{
|
|
_client.stop();
|
|
if ( _currentHostConnectionCallback )
|
|
{
|
|
(*_currentHostConnectionCallback)(HOST_CONNECTION_DISCONNECTED);
|
|
}
|
|
}
|
|
_connected = false;
|
|
_time_connect = millis();
|
|
}
|
|
|
|
};
|
|
|
|
#endif //WIFI_CLIENT_STREAM_H
|