ST / Mbed 2 deprecated TLS_HelloWorld_IDW01M1

Connect a secure socket with TLS server authentication through X-NUCLEO_IDW01M1 Wi-Fi.

Dependencies:   NetworkSocketAPI X_NUCLEO_IDW01M1v2 mbed

Fork of HelloWorld_IDW01M1v2 by ST

Example of TLS connection using X-NUCLEO-IDW01M1 Wi-Fi expansion board.
The application is meant to be used with mbed OS 2 ("Classic") only (no mbedOS 5 support).
It uses the TLS/SSL feature provided natively by the Wi-Fi module and performs secure connection to https://mbed.org also verifying the server identity.
To avoid expired CA certificates, system time (in epoch) must be manually entered (e..g. using http://www.epochconverter.com/ ) .
Retrieval of current time from an NTP server is shown by this example.

Diff: main.cpp

Revision:
12:7b6b23225fd0
Parent:
11:0b4472769b08
diff -r 0b4472769b08 -r 7b6b23225fd0 main.cpp
--- a/main.cpp	Fri Jan 13 15:31:35 2017 +0000
+++ b/main.cpp	Mon Jan 16 13:20:06 2017 +0000
@@ -81,8 +81,8 @@
     int err;    
     char * ssid = "STM";
     char * seckey = "STMDemo";  
-    
-    pc.printf("\r\nX-NUCLEO-IDW01M1 mbed Application\r\n");     
+      
+    pc.printf("\r\nTLS_HelloWorld mbed Application\r\n");     
     pc.printf("\r\nconnecting to AP\r\n");
             
     if(spwf.connect(ssid, seckey, NSAPI_SECURITY_WPA2)) {      
@@ -92,42 +92,8 @@
         return -1;
     }   
 
-    const char *ip = spwf.get_ip_address();
-    const char *mac = spwf.get_mac_address();
-    
-    pc.printf("\r\nIP Address is: %s\r\n", (ip) ? ip : "No IP");
-    pc.printf("\r\nMAC Address is: %s\r\n", (mac) ? mac : "No MAC");    
-    
-    SocketAddress addr(&spwf, "st.com");   
-    pc.printf("\r\nst.com resolved to: %s\r\n", addr.get_ip_address());    
-
-    pc.printf("\r\nconnecting to http://4.ifcfg.me\r\n");
-    
+// Start Secure Socket connection test (one way server autentication only)   
     TCPSocket socket(&spwf);
-    err = socket.connect("4.ifcfg.me", 23);
-    if(err!=0) 
-    {
-      pc.printf("\r\nCould not connect to Socket, err = %d!!\r\n", err); 
-      return -1;
-    } else pc.printf("\r\nconnected to host server\r\n"); 
-    
-    char buffer[100];
-    int count = 0;
-    pc.printf("\r\nReceiving Data\r\n"); 
-    count = socket.recv(buffer, sizeof buffer);
-    
-    if(count > 0)
-    {
-        buffer [count]='\0';
-        printf("%s\r\n", buffer);  
-    }
-    else pc.printf("\r\nData not received\r\n");
-
-    pc.printf("\r\nClosing Socket\r\n");
-    socket.close();
-    pc.printf("\r\nUnsecure Socket Test complete.\r\n");
-
-// Start Secure Socket connection test (one way server autentication only)   
     time_t ctTime;
     ctTime = time(NULL);             
     printf ("Start Secure Socket connection with one way server autentication test\n\r");                
@@ -146,6 +112,7 @@
 // NOTE:  the Wifi API set_secure_mode() and set_unsecure_mode() refers to the whole interface so the socket must be created / opened after 
 // having set the desidered mode (deft unsecure).
 //#define SEC_MODE1 // two possible ways to secure connect a socket are shown 
+    SocketAddress addr(&spwf, "");
     spwf.gethostbyname(&addr,"www.mbed.com");  // ask DNS to resolve URL/IP 
     addr.set_port(443);     
     spwf.set_secure_mode();