response lifecycle timeout and route handling

src/http/lifecycle/Response.ts

@@ -1,5 +1,5 @@
 import {Request} from "./Request";
-import {ErrorWithContext, HTTPStatus} from "@extollo/util"
+import {ErrorWithContext, HTTPStatus, BehaviorSubject} from "@extollo/util"
 import {ServerResponse} from "http"
 
 export class HeadersAlreadySentError extends ErrorWithContext {
@@ -20,7 +20,9 @@ export class Response {
     private _sentHeaders: boolean = false
     private _responseEnded: boolean = false
     private _status: HTTPStatus = HTTPStatus.OK
-    public body: any
+    public body: string = ''
+    public readonly sending$: BehaviorSubject<Response> = new BehaviorSubject<Response>()
+    public readonly sent$: BehaviorSubject<Response> = new BehaviorSubject<Response>()
 
     constructor(
         public readonly request: Request,
@@ -96,9 +98,12 @@ export class Response {
         })
     }
 
-    public async send(data?: any) {
-        await this.write(data ?? this.body ?? '')
+    public async send() {
+        await this.sending$.next(this)
+        this.setHeader('Content-Length', String(this.body?.length ?? 0))
+        await this.write(this.body ?? '')
         this.end()
+        await this.sent$.next(this)
     }
 
     public end() {