return id's with the messages

src/models/stratum-messages/AuthorizationMessage.ts

@@ -46,7 +46,7 @@ export class AuthorizationMessage extends StratumBaseMessage {
 
     public response() {
         return {
-            id: null,
+            id: this.id,
             error: null,
             result: true
         };

src/models/stratum-messages/ConfigurationMessage.ts

@@ -15,7 +15,7 @@ export class ConfigurationMessage extends StratumBaseMessage {
 
     public response() {
         return {
-            id: null,
+            id: this.id,
             error: null,
             result: {
                 'version-rolling': true,

src/models/stratum-messages/MiningSubmitMessage.ts

@@ -55,7 +55,7 @@ export class MiningSubmitMessage extends StratumBaseMessage {
 
     public response() {
         return {
-            id: null,
+            id: this.id,
             error: null,
             result: true
         };

src/models/stratum-messages/SubscriptionMessage.ts

@@ -16,7 +16,7 @@ export class SubscriptionMessage extends StratumBaseMessage {
 
     public response(clientId: string) {
         return {
-            id: null,
+            id: this.id,
             error: null,
             result: [
                 [

src/models/stratum-messages/SuggestDifficultyMessage.ts

@@ -31,7 +31,7 @@ export class SuggestDifficulty extends StratumBaseMessage {
 
     public response(difficulty: number) {
         return {
-            id: null,
+            id: this.id,
             method: eResponseMethod.SET_DIFFICULTY,
             params: [difficulty]
         }