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denoland-deno/std/http/racing_server.ts
2019-10-09 17:10:09 -04:00

50 lines
1.3 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { serve, ServerRequest } from "./server.ts";
import { delay } from "../util/async.ts";
const addr = Deno.args[1] || "127.0.0.1:4501";
const server = serve(addr);
const body = new TextEncoder().encode("Hello 1\n");
const body4 = new TextEncoder().encode("World 4\n");
async function delayedRespond(request: ServerRequest): Promise<void> {
await delay(3000);
await request.respond({ status: 200, body });
}
async function largeRespond(request: ServerRequest, c: string): Promise<void> {
const b = new Uint8Array(1024 * 1024);
b.fill(c.charCodeAt(0));
await request.respond({ status: 200, body: b });
}
async function main(): Promise<void> {
let step = 1;
for await (const request of server) {
switch (step) {
case 1:
// Try to wait long enough.
// For pipelining, this should cause all the following response
// to block.
delayedRespond(request);
break;
case 2:
// HUGE body.
largeRespond(request, "a");
break;
case 3:
// HUGE body.
largeRespond(request, "b");
break;
default:
request.respond({ status: 200, body: body4 });
break;
}
step++;
}
}
main();
console.log("Racing server listening...\n");