updated readme & sni function

Author: gasbytes

wrapper/CSharp/README.md

@@ -30,7 +30,7 @@ apt-get upgrade
 apt-get install mono-complete
 ```
 
-# Build wolfSSL and install
+### Build wolfSSL and install
 
 ```
 ./autogen.sh
@@ -40,24 +40,42 @@ make check
 sudo make install
 ```
 
-# Build and run the wrapper
+### Build and run the wrapper
 
 ```
 cd wrapper/CSharp
+```
+
+Building the server:
+```
+mcs wolfSSL_CSharp/wolfSSL.cs wolfSSL_CSharp/X509.cs \
+wolfSSL-TLS-Server/wolfSSL-TLS-Server.cs && \
+cp wolfSSL_CSharp/wolfSSL.exe ../../certs/server.exe
+```
 
+Building the client:
+```
 mcs wolfSSL_CSharp/wolfSSL.cs wolfSSL_CSharp/X509.cs \
-    wolfSSL-TLS-Server/wolfSSL-TLS-Server.cs
+wolfSSL-TLS-Server/wolfSSL-TLS-Server.cs && \
+cp wolfSSL_CSharp/wolfSSL.exe ../../certs/client.exe
 ```
 
-# Run the example
+### Run the example
 
+In one terminal instance run:
 ```
-cp wolfSSL_CSharp/wolfSSL.exe ../../certs
 cd ../../certs
-mono wolfSSL.exe
+mono server.exe
+```
+
+And in another terminal instance run:
+```
+cd ../../certs
+mono client.exe
+```
 
-Calling ctx Init from wolfSSL
-Finished init of ctx .... now load in cert and key
-Ciphers : TLS13-AES128-GCM-SHA256:TLS13-AES256-GCM-SHA384:TLS13-CHACHA20-POLY1305-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-CHACHA20-POLY1305:DHE-RSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305-OLD:ECDHE-ECDSA-CHACHA20-POLY1305-OLD:DHE-RSA-CHACHA20-POLY1305-OLD
-Started TCP and waiting for a connection
+### Enabling SNI
+To enable SNI, just pass the `-S` argument with the specified hostname:
+```
+mono client.exe -S hostname 
 ```

wrapper/CSharp/wolfSSL-TLS-Client/wolfSSL-TLS-Client.cs

@@ -65,20 +65,21 @@ private static int myVerify(int preverify, IntPtr x509_ctx)
     /// wolfSSL.
     /// <param name="args">Parameters passed via command line</param>
     /// </summary>
-    private static bool haveSNI(string[] args) 
+    private static bool haveSNI(string[] args)
     {
-        if (args != null && args.Length == 2 && args[0] == "-S") 
-        {
-            Console.WriteLine("SNI IS: ON");
-            return true;
-        } 
-        else {
-            Console.WriteLine("SNI IS: OFF");
-            return false;
+        bool sniON = false;
+        for (int i = 0; i < args.Length; i++) {
+            if (args[i] == "-S") {
+                sniON = true;
+                break;
+            }
         }
+        Console.WriteLine("SNI IS: " + sniON);
+        return sniON;
     }
 
 
+
     public static void Main(string[] args)
     {
         IntPtr ctx;

wrapper/CSharp/wolfSSL-TLS-Server/wolfSSL-TLS-Server.cs

@@ -53,17 +53,17 @@ private static void clean(IntPtr ssl, IntPtr ctx)
     /// wolfSSL.
     /// <param name="args">Parameters passed via command line</param>
     /// </summary>
-    private static bool haveSNI(string[] args) 
+    private static bool haveSNI(string[] args)
     {
-        if (args != null && args.Length == 2 && args[0] == "-S") 
-        {
-            Console.WriteLine("SNI IS: ON");
-            return true;
-        } 
-        else {
-            Console.WriteLine("SNI IS: OFF");
-            return false;
+        bool sniON = false;
+        for (int i = 0; i < args.Length; i++) {
+            if (args[i] == "-S") {
+                sniON = true;
+                break;
+            }
         }
+        Console.WriteLine("SNI IS: " + sniON);
+        return sniON;
     }
 
     /// <summary>