server: add a HELLO handshake

[fanfix.git] / src / be / nikiroo / utils / serial / server / ConnectActionClient.java

diff --git a/src/be/nikiroo/utils/serial/server/ConnectActionClient.java b/src/be/nikiroo/utils/serial/server/ConnectActionClient.java
index 31b71b92af80eb8383fba1099e548fff5a4cd750..1b92b42235a91e471cb650b2e8dc48608a1d6dc3 100644 (file)
--- a/src/be/nikiroo/utils/serial/server/ConnectActionClient.java
+++ b/src/be/nikiroo/utils/serial/server/ConnectActionClient.java
@@ -4,6 +4,8 @@ import java.io.IOException;
 import java.net.Socket;
 import java.net.UnknownHostException;
 
+import javax.net.ssl.SSLException;
+
 /**
  * Base class used for the client basic handling.
  * <p>
@@ -57,6 +59,7 @@ abstract class ConnectActionClient {
                action = new ConnectAction(s, false, key) {
                        @Override
                        protected void action() throws Exception {
+                               ConnectActionClient.this.clientHello();
                                ConnectActionClient.this.action();
                        }
 
@@ -67,6 +70,25 @@ abstract class ConnectActionClient {
                };
        }
 
+       /**
+        * Send the HELLO message (send a String "HELLO" to the server, to check I/O
+        * and encryption modes).
+        * <p>
+        * Will automatically handle the answer (the server must answer "HELLO" in
+        * kind).
+        * 
+        * @throws IOException
+        *             in case of I/O error
+        * @throws SSLException
+        *             in case of encryption error
+        */
+       protected void clientHello() throws IOException {
+               String HELLO = action.sendString("HELLO");
+               if (!"HELLO".equals(HELLO)) {
+                       throw new SSLException("Server did not accept the encryption key");
+               }
+       }
+
        /**
         * Actually start the process and call the action (synchronous).
         */