SocketWrapper - MbedServer modernization (without available() and Print)

MbedServer didn't manage clients for proper available() and
print-to-all-clients. Now available() in derived server classes is
deprecated and accept() is added with the same implementation.
Inheriting from Print (Server) is removed. write methods for Print
implementation are removed. They never worked.
New are constructor without parameters, begin with parameter port and
operator bool.

Author: JAndrassy

libraries/Ethernet/examples/AdvancedChatServer/AdvancedChatServer.ino

@@ -67,7 +67,7 @@ void setup() {
 
 void loop() {
   // check for any new client connecting, and say hello (before any incoming data)
-  EthernetClient newClient = server.available();
+  EthernetClient newClient = server.accept();
   if (newClient) {
     for (byte i=0; i < 8; i++) {
       if (!clients[i]) {

libraries/Ethernet/examples/BarometricPressureWebServer/BarometricPressureWebServer.ino

@@ -141,7 +141,7 @@ void getData() {
 
 void listenForEthernetClients() {
   // listen for incoming clients
-  EthernetClient client = server.available();
+  EthernetClient client = server.accept();
   if (client) {
     Serial.println("Got a client");
     // an http request ends with a blank line

libraries/Ethernet/examples/ChatServer/ChatServer.ino

@@ -61,7 +61,7 @@ void setup() {
 
 void loop() {
   // listen for incoming clients
-  EthernetClient client = server.available();
+  EthernetClient client = server.accept();
   if (client) {
     Serial.println("new client");
     // an http request ends with a blank line

libraries/Ethernet/examples/DhcpChatServer/DhcpChatServer.ino

@@ -1,6 +1,10 @@
 #include "EthernetServer.h"
 
 arduino::EthernetClient arduino::EthernetServer::available(uint8_t* status) {
+  return accept(status);
+}
+
+arduino::EthernetClient arduino::EthernetServer::accept(uint8_t* status) {
   EthernetClient client;
   nsapi_error_t error;
 

libraries/Ethernet/examples/WebServer/WebServer.ino

@@ -31,9 +31,11 @@ class EthernetServer : public MbedServer {
   }
 
 public:
+  EthernetServer() {}
   EthernetServer(uint16_t port)
     : MbedServer(port) {}
-  EthernetClient available(uint8_t* status = nullptr);
+  EthernetClient accept(uint8_t* status = nullptr);
+  EthernetClient available(uint8_t* status = nullptr) __attribute__((deprecated("Use accept().")));
 };
 
 }

libraries/Ethernet/src/EthernetServer.cpp

@@ -5,39 +5,29 @@ uint8_t arduino::MbedServer::status() {
   return 0;
 }
 
+void arduino::MbedServer::begin(uint16_t port) {
+  _port = port;
+  begin();
+}
+
 void arduino::MbedServer::begin() {
   if (sock == nullptr) {
     sock = new TCPSocket();
     ((TCPSocket *)sock)->open(getNetwork());
   }
   if (sock) {
+    int enable = 1;
+    sock->setsockopt(NSAPI_SOCKET, NSAPI_REUSEADDR, &enable, sizeof(int));
     sock->bind(_port);
     sock->listen(5);
     sock->set_blocking(false);
   }
 }
 
-size_t arduino::MbedServer::write(uint8_t c) {
-  if (sock) {
-    sock->send(&c, 1);
-    return 1;
-  }
-  return 0;
-}
-
-size_t arduino::MbedServer::write(const uint8_t *buf, size_t size) {
-  if (sock) {
-    sock->send(buf, size);
-    return size;
-  }
-  return 0;
-}
-
-
 // MUST be reimplemented (just copy/paste and replace MbedClient to *Client) since MbedClient is abstract
 
 /*
-arduino::MbedClient arduino::MbedServer::available(uint8_t* status) {
+arduino::MbedClient arduino::MbedServer::accept(uint8_t* status) {
 	MbedClient client;
 	nsapi_error_t error;
 	if (sock == nullptr) {

libraries/Ethernet/src/EthernetServer.h

@@ -30,31 +30,34 @@ namespace arduino {
 
 class MbedClient;
 
-class MbedServer : public arduino::Server {
+class MbedServer {
 
 protected:
   virtual NetworkInterface *getNetwork() = 0;
   TCPSocket *sock = nullptr;
   uint16_t _port;
 
 public:
+  MbedServer()
+    : _port(80){};
   MbedServer(uint16_t port)
     : _port(port){};
 
   virtual ~MbedServer() {
+    end();
+  }
+  void end() {
     if (sock) {
       delete sock;
       sock = nullptr;
     }
   }
+  void begin(uint16_t port);
   void begin();
-  virtual size_t write(uint8_t);
-  virtual size_t write(const uint8_t *buf, size_t size);
   uint8_t status();
-
-  //virtual MbedClient available(uint8_t* status) = 0;
-
-  using Print::write;
+  explicit operator bool() {
+    return sock != nullptr;
+  }
 
   friend class MbedSocketClass;
   friend class MbedClient;

libraries/SocketWrapper/src/MbedServer.cpp

@@ -1,6 +1,10 @@
 #include "WiFiServer.h"
 
 arduino::WiFiClient arduino::WiFiServer::available(uint8_t* status) {
+  return accept(status);
+}
+
+arduino::WiFiClient arduino::WiFiServer::accept(uint8_t* status) {
   WiFiClient client;
   nsapi_error_t error;
   if (sock == nullptr) {