fixing connection issue on Ethernet and Wifi Client when host is passed

Author: andreagilardoni

libraries/Ethernet/src/EthernetClient.h

@@ -14,6 +14,14 @@ class EthernetClient : public lwipClient {
         this->bindCNetIf(Ethernet);
     }
 
+    int connect(const char* host, uint16_t port) {
+        auto res = lwipClient::connect(host, port);
+
+        this->bindCNetIf(Ethernet);
+
+        return res;
+    }
+
     int connect(IPAddress ip, uint16_t port) {
         auto res = lwipClient::connect(ip, port);
 

libraries/WiFi/src/WiFiClient.h

@@ -14,6 +14,14 @@ class WiFiClient: public lwipClient {
         this->bindCNetIf(WiFiStation);
     }
 
+    int connect(const char* host, uint16_t port) {
+        auto res = lwipClient::connect(host, port);
+
+        this->bindCNetIf(WiFiStation);
+
+        return res;
+    }
+
     int connect(IPAddress ip, uint16_t port) {
         auto res = lwipClient::connect(ip, port);
 

libraries/lwIpWrapper/src/CNetIf.cpp

@@ -459,6 +459,14 @@ bool CNetIf::dhcpRenew() {
 
 #endif
 
+IPAddress CNetIf::dnsServerIP() {
+#if LWIP_DNS
+    return CLwipIf::getInstance().getDns(0);
+#else
+    return INADDR_NONE;
+#endif
+}
+
 /* ##########################################################################
  *                      ETHERNET NETWORK INTERFACE CLASS
  * ########################################################################## */

libraries/lwIpWrapper/src/CNetIf.h

@@ -167,7 +167,7 @@ class CNetIf: public NetworkInterface {
     IPAddress localIP()     { return IPAddress(this->getIpAdd()); }
     IPAddress subnetMask()  { return IPAddress(this->getNmAdd()); }
     IPAddress gatewayIP()   { return IPAddress(this->getGwAdd()); }
-    IPAddress dnsServerIP() { /* FIXME understand where dns should be managed */}
+    IPAddress dnsServerIP();
 
     void config(IPAddress _ip, IPAddress _gw, IPAddress _nm);