feat: enable gas calculation

js/createWS.js

@@ -179,6 +179,34 @@ var onExecuteResultInternal = function (data) {
         callback(global.executeResult, data);
     }
 };
+window.executeContractWithGas = function (contractID, method, strarg, gas, cb, asDebug) {
+    var sm2Key = global.sm2Key;
+    var request = {};
+    request.action = "executeContract";
+    request.requestID = new Date().getTime() + "_"
+        + Math.floor(Math.random() * 10000);
+    if (asDebug)
+       request.isDebug = true;
+    global.cbs[request.requestID] = cb;
+    request.contractID = contractID;
+    request.operation = method;
+    request.arg = strarg;
+    if (sm2Key) {
+        request.pubkey = sm2Key.publicKey;
+        var toSign = request.contractID + "|"
+                                 + method + "|" + strarg ;
+        if (gas>0){
+              request.gasLimit = gas;
+              toSign+= "|" + gas;
+        }
+        toSign+= "|" + sm2Key.publicKey;
+        request.signature = sm2.doSignature(toSign ,
+            sm2Key.privateKey, {hash: true, der: true});
+    }
+
+    global.wssocket.send(JSON.stringify(request));
+};
+
 window.executeContract = function (contractID, method, strarg, cb, asDebug) {
     var sm2Key = global.sm2Key;
     var request = {};