feat(Server): method called with applyMethod is "applied" instead of being called directly, which enables access to "this".The owning object for the method is the port, therefore, that's what is being passed as "this".

Author: bruno-brant

package-lock.json

@@ -6,7 +6,7 @@
 import { EventEmitter } from 'events';
 import * as http from 'http';
 import * as url from 'url';
-import { IOneWayOptions, ISecurity, IServerOptions, IServices, ISoapFault, ISoapServiceMethod } from './types';
+import { IOneWayOptions, IServerOptions, IServicePort, IServices, ISoapFault, ISoapServiceMethod } from './types';
 import { findPrefix } from './utils';
 import { WSDL } from './wsdl';
 import { BindingElement, IPort } from './wsdl/elements';
@@ -173,29 +173,29 @@ export class Server extends EventEmitter {
 
   private _processSoapHeader(soapHeader, name, namespace, xmlns) {
     switch (typeof soapHeader) {
-    case 'object':
-      return this.wsdl.objectToXML(soapHeader, name, namespace, xmlns, true);
-    case 'function':
-      const _this = this;
-      // arrow function does not support arguments variable
-      // tslint:disable-next-line
-      return function() {
-        const result = soapHeader.apply(null, arguments);
-
-        if (typeof result === 'object') {
-          return _this.wsdl.objectToXML(result, name, namespace, xmlns, true);
-        } else {
-          return result;
-        }
-      };
-    default:
-      return soapHeader;
+      case 'object':
+        return this.wsdl.objectToXML(soapHeader, name, namespace, xmlns, true);
+      case 'function':
+        const _this = this;
+        // arrow function does not support arguments variable
+        // tslint:disable-next-line
+        return function () {
+          const result = soapHeader.apply(null, arguments);
+
+          if (typeof result === 'object') {
+            return _this.wsdl.objectToXML(result, name, namespace, xmlns, true);
+          } else {
+            return result;
+          }
+        };
+      default:
+        return soapHeader;
     }
   }
 
   private _initializeOptions(options: IServerOptions) {
     this.wsdl.options.attributesKey = options.attributesKey || 'attributes';
-    this.onewayOptions.statusCode = this.onewayOptions.responseCode || 200;
+    this.onewayOptions.statusCode = this.onewayOptions.responseCode || 200;
     this.onewayOptions.emptyBody = !!this.onewayOptions.emptyBody;
   }
 
@@ -468,6 +468,7 @@ export class Server extends EventEmitter {
     includeTimestamp?,
   ) {
     options = options || {};
+    let port: IServicePort;
     let method: ISoapServiceMethod;
     let body;
     let headers;
@@ -490,6 +491,7 @@ export class Server extends EventEmitter {
 
     try {
       method = this.services[serviceName][portName][methodName];
+      port = this.services[serviceName][portName];
     } catch (error) {
       return callback(this._envelope('', headers, includeTimestamp));
     }
@@ -546,7 +548,7 @@ export class Server extends EventEmitter {
       handleResult(error, result);
     };
 
-    const result = method(args, methodCallback, options.headers, req);
+    const result = method.apply(this, [args, methodCallback, options.headers, req]);
     if (typeof result !== 'undefined') {
       if (isPromiseLike<any>(result)) {
         result.then((value) => {