feat: Add timeout to incoming requests

server/env.ts

@@ -167,6 +167,15 @@ export class Environment {
   @IsOptional()
   public WEB_CONCURRENCY = this.toOptionalNumber(process.env.WEB_CONCURRENCY);
 
+  /**
+   * How long a request should be processed before giving up and returning an
+   * error response to the client, defaults to 10s
+   */
+  @IsNumber()
+  @IsOptional()
+  public REQUEST_TIMEOUT =
+    this.toOptionalNumber(process.env.REQUEST_TIMEOUT) ?? 10 * 1000;
+
   /**
    * Base64 encoded private key if Outline is to perform SSL termination.
    */

server/index.ts

@@ -118,6 +118,8 @@ async function start(id: number, disconnect: () => void) {
   });
 
   server.listen(normalizedPortFlag || env.PORT || "3000");
+  server.setTimeout(env.REQUEST_TIMEOUT);
+
   process.once("SIGTERM", shutdown);
   process.once("SIGINT", shutdown);