| /* | |
| WiFiServerStream.h | |
| An Arduino Stream extension for a WiFiClient or WiFiServer to be used | |
| 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 | |
| - WiFiStream - Copyright (C) 2015-2016 Jesse Frush. All rights reserved. | |
| published under the same license. | |
| Last updated April 23rd, 2016 | |
| */ | |
| class WiFiServerStream : public WiFiStream | |
| { | |
| protected: | |
| WiFiServer _server = WiFiServer(3030); | |
| bool _listening = false; | |
| /** | |
| * check if TCP client is connected | |
| * @return true if connected | |
| */ | |
| virtual inline bool connect_client() | |
| { | |
| if ( _connected ) | |
| { | |
| if ( _client && _client.connected() ) return true; | |
| stop(); | |
| } | |
| // passive TCP connect (accept) | |
| WiFiClient newClient = _server.available(); | |
| if ( !newClient ) return false; | |
| _client = newClient; | |
| _connected = true; | |
| if ( _currentHostConnectionCallback ) | |
| { | |
| (*_currentHostConnectionCallback)(HOST_CONNECTION_CONNECTED); | |
| } | |
| return true; | |
| } | |
| public: | |
| /** | |
| * create a WiFi stream with a TCP server | |
| */ | |
| WiFiServerStream(uint16_t server_port) : WiFiStream(server_port) {} | |
| /** | |
| * maintain WiFi and TCP connection | |
| * @return true if WiFi and TCP connection are established | |
| */ | |
| virtual inline bool maintain() | |
| { | |
| if ( connect_client() ) return true; | |
| stop(); | |
| if ( !_listening && WiFi.status() == WL_CONNECTED ) | |
| { | |
| // start TCP server after first WiFi connect | |
| _server = WiFiServer(_port); | |
| _server.begin(); | |
| _listening = true; | |
| } | |
| return false; | |
| } | |
| /** | |
| * stop client connection | |
| */ | |
| virtual inline void stop() | |
| { | |
| if ( _client) | |
| { | |
| _client.stop(); | |
| if ( _currentHostConnectionCallback ) | |
| { | |
| (*_currentHostConnectionCallback)(HOST_CONNECTION_DISCONNECTED); | |
| } | |
| } | |
| _connected = false; | |
| } | |
| }; | |