Bring back trackingName

Reviewed By: yungsters

Differential Revision: D3501805

fbshipit-source-id: be7e1a76c022d050542af797dda49b3cf14340bb

Libraries/Network/RCTNetworking.android.js

@@ -27,7 +27,7 @@ function convertHeadersMapToArray(headers: Object): Array<Header> {
 }
 
 let _requestId = 1;
-function generateRequestId() {
+function generateRequestId(): number {
   return _requestId++;
 }
 
@@ -41,7 +41,16 @@ class RCTNetworking extends NativeEventEmitter {
     super(RCTNetworkingNative);
   }
 
-  sendRequest(method, url, headers, data, incrementalUpdates, timeout, callback) {
+  sendRequest(
+    method: ?string,
+    trackingName: string,
+    url: ?string,
+    headers: Object,
+    data: string | FormData | Object,
+    incrementalUpdates: boolean,
+    timeout: number,
+    callback: (requestId: number) => void,
+  ) {
     if (typeof data === 'string') {
       data = {string: data};
     } else if (data instanceof FormData) {
@@ -52,6 +61,7 @@ class RCTNetworking extends NativeEventEmitter {
         }),
       };
     }
+    data = {...data, trackingName};
     const requestId = generateRequestId();
     RCTNetworkingNative.sendRequest(
       method,
@@ -65,11 +75,11 @@ class RCTNetworking extends NativeEventEmitter {
     callback(requestId);
   }
 
-  abortRequest(requestId) {
+  abortRequest(requestId: number) {
     RCTNetworkingNative.abortRequest(requestId);
   }
 
-  clearCookies(callback) {
+  clearCookies(callback: number) {
     RCTNetworkingNative.clearCookies(callback);
   }
 }

Libraries/Network/RCTNetworking.ios.js

@@ -20,12 +20,22 @@ class RCTNetworking extends NativeEventEmitter {
     super(RCTNetworkingNative);
   }
 
-  sendRequest(method, url, headers, data, incrementalUpdates, timeout, callback) {
+  sendRequest(
+    method: ?string,
+    trackingName: string,
+    url: ?string,
+    headers: Object,
+    data: string | FormData | Object,
+    incrementalUpdates: boolean,
+    timeout: number,
+    callback: (requestId: number) => void,
+  ) {
     if (typeof data === 'string') {
       data = {string: data};
     } else if (data instanceof FormData) {
       data = {formData: data.getParts()};
     }
+    data = {...data, trackingName};
     RCTNetworkingNative.sendRequest({
       method,
       url,
@@ -36,11 +46,11 @@ class RCTNetworking extends NativeEventEmitter {
     }, callback);
   }
 
-  abortRequest(requestId) {
+  abortRequest(requestId: number) {
     RCTNetworkingNative.abortRequest(requestId);
   }
 
-  clearCookies(callback) {
+  clearCookies(callback: number) {
     console.warn('RCTNetworking.clearCookies is not supported on iOS');
   }
 }

Libraries/Network/XMLHttpRequest.js

@@ -106,6 +106,7 @@ class XMLHttpRequest extends EventTarget(...XHR_EVENTS) {
   _sent: boolean;
   _url: ?string = null;
   _timedOut: boolean = false;
+  _trackingName: string = 'unknown';
   _incrementalEvents: boolean = false;
 
   constructor() {
@@ -322,6 +323,14 @@ class XMLHttpRequest extends EventTarget(...XHR_EVENTS) {
     this._headers[header.toLowerCase()] = value;
   }
 
+  /**
+   * Custom extension for tracking origins of request.
+   */
+  setTrackingName(trackingName: string): XMLHttpRequest {
+    this._trackingName = trackingName;
+    return this;
+  }
+
   open(method: string, url: string, async: ?boolean): void {
     /* Other optional arguments are not supported yet */
     if (this.readyState !== this.UNSENT) {
@@ -367,6 +376,7 @@ class XMLHttpRequest extends EventTarget(...XHR_EVENTS) {
     ));
     RCTNetworking.sendRequest(
       method,
+      this._trackingName,
       url,
       headers,
       data,