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denoland-deno/std/http/racing_server.ts
2020-03-24 12:24:58 -04:00

68 lines
1.7 KiB
TypeScript

// Copyright 2018-2020 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);
function body(i: number): string {
return `Step${i}\n`;
}
async function delayedRespond(
request: ServerRequest,
step: number
): Promise<void> {
await delay(3000);
await request.respond({ status: 200, body: body(step) });
}
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 ignoreToConsume(
request: ServerRequest,
step: number
): Promise<void> {
await request.respond({ status: 200, body: body(step) });
}
console.log("Racing server listening...\n");
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, step);
break;
case 2:
// HUGE body.
largeRespond(request, "a");
break;
case 3:
// HUGE body.
largeRespond(request, "b");
break;
case 4:
// Ignore to consume body (content-length)
ignoreToConsume(request, step);
break;
case 5:
// Ignore to consume body (chunked)
ignoreToConsume(request, step);
break;
case 6:
// Ignore to consume body (chunked + trailers)
ignoreToConsume(request, step);
break;
default:
request.respond({ status: 200, body: body(step) });
break;
}
step++;
}