From 514a578260716f8317a893cabab59e4013be076a Mon Sep 17 00:00:00 2001
From: garrettmills <shout@garrettmills.dev>
Date: Wed, 30 Mar 2022 22:19:33 -0500
Subject: [PATCH] Make HTTPServer ignore responses that cannot be sent

---
 package.json                   | 2 +-
 src/http/lifecycle/Response.ts | 8 ++++++++
 src/service/HTTPServer.ts      | 4 +++-
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/package.json b/package.json
index f8fd009..74ccb7a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@extollo/lib",
-  "version": "0.9.14",
+  "version": "0.9.15",
   "description": "The framework library that lifts up your code.",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",
diff --git a/src/http/lifecycle/Response.ts b/src/http/lifecycle/Response.ts
index 0eadf00..0128020 100644
--- a/src/http/lifecycle/Response.ts
+++ b/src/http/lifecycle/Response.ts
@@ -255,6 +255,14 @@ export class Response {
         await this.sent$.next(this)
     }
 
+    /**
+     * Returns true if the response can still be sent. False if it has been sent
+     * or the connection has been destroyed.
+     */
+    public canSend(): boolean {
+        return !(this.responseEnded || this.serverResponse.destroyed)
+    }
+
     /**
      * Mark the response as ended and close the socket.
      */
diff --git a/src/service/HTTPServer.ts b/src/service/HTTPServer.ts
index d0d4ce1..3e7e12a 100644
--- a/src/service/HTTPServer.ts
+++ b/src/service/HTTPServer.ts
@@ -128,7 +128,9 @@ export class HTTPServer extends Unit {
                     await error(new ErrorWithContext('Unknown error occurred.', { e }))
                 }
 
-                await extolloReq.response.send()
+                if ( extolloReq.response.canSend() ) {
+                    await extolloReq.response.send()
+                }
             })
         }
     }