[tests] Add server error handling to dhcp ws tests

The payload is too large but it wasn't clear because server errors
were being ignored. We still need to look into why the payload is too
large and whether it's a bug or this test should extend the max payload.

The tests seem to work if you increase the payload size.

Signed-off-by: Geoff Gustafson <geoff@linux.intel.com>

tests/test-dhcp-ws-manual.js

@@ -92,6 +92,10 @@ if (board.name === "arduino_101") {
         });
 
         SocketBody(WSServer);
+
+        WSServer.on('error', function (error) {
+            console.log('Server socket: ' + error.name + ': ' + error.message);
+        });
     });
 
     netConfig.on("netdown", function() {
@@ -122,5 +126,9 @@ if (board.name === "arduino_101") {
         });
 
         SocketBody(WSServer);
+
+        WSServer.on('error', function (error) {
+            console.log('Server socket: ' + error.name + ': ' + error.message);
+        });
     });
 }

tests/test-ws4-server-dhcp.js

@@ -3,7 +3,7 @@
 // Run this test case and run ws client on linux with
 //   tests/tools/test-ws4-client-dhcp.js
 
-console.log("Test web socket server APIs on IPv4 with DHCP mode...");
+console.log("Test websocket server APIs on IPv4 with DHCP mode...");
 
 var WebSocket = require("ws");
 var assert = require("Assert.js");
@@ -32,13 +32,13 @@ netConfig.dhcp(function(address, subnet, gateway) {
     });
 
     assert(typeof WSServer === "object" && WSServer !== null,
-           "WSServerObject: be defined");
+           "WSServer object is defined");
 
     WSServer.on("connection", function(websocket) {
         assert(true, "WSServerObject: accept client connected");
         assert(true, "WSServerEvent: be called as 'connection' event");
 
-        console.log("Creat web socket connection successful");
+        console.log("Create websocket connection successful");
 
         var messageFlag = true;
         var sendNoMaskFlag = false;
@@ -203,4 +203,8 @@ netConfig.dhcp(function(address, subnet, gateway) {
             }
         }, 3000);
     });
+
+    WSServer.on('error', function (error) {
+        console.log('Server socket: ' + error.name + ': ' + error.message);
+    });
 });