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// Copyright 2019-2020 Yusuke Sakurai. All rights reserved. MIT license.import {  handleKeepAliveConn,  listenAndServe,  ServerRequest,} from "./server.ts";import {  assertEquals,  assertThrowsAsync,} from "./vendor/https/deno.land/std/testing/asserts.ts";import { encode } from "./_util.ts";import { createAgent } from "./agent.ts";import { readResponse, writeRequest } from "./serveio.ts";import { BufReader } from "./vendor/https/deno.land/std/io/bufio.ts";import { deferred, delay } from "./vendor/https/deno.land/std/async/mod.ts";import { Buffer } from "./vendor/https/deno.land/std/io/buffer.ts";import { group } from "./_test_util.ts";
let port = 8880;const handler = (req: ServerRequest) =>  req.respond({ status: 200, body: "ok" });group("server", (t) => {  t.test("basic", async function server() {    port++;    const listener = listenAndServe({ port }, handler);    const agent = createAgent("http://127.0.0.1:" + port);    try {      const { headers, status, text } = await agent.send({        path: "/",        method: "GET",      });      assertEquals(headers.get("content-length"), "2");      assertEquals(status, 200);      assertEquals(headers.get("content-type"), "text/plain; charset=UTF-8");      assertEquals(await text(), "ok");    } finally {      agent.conn.close();      listener.close();    }  });  t.test("keepAliveTimeout", async () => {    port++;    const l = listenAndServe(      { port },      handler,      { keepAliveTimeout: 10 },    );    const agent = createAgent(`http://127.0.0.1:${port}`);    try {      const req = {        path: "/",        method: "POST",        headers: new Headers({          host: "deno.land",        }),        body: "hello",      };      const { status, body } = await agent.send(req);      await body.close();      assertEquals(200, status);      await delay(100);      await assertThrowsAsync(async () => {        await agent.send(req);      });    } finally {      agent.conn.close();      l.close();    }  });  t.test(    "serverKeepAliveTimeoutMax",    async function serverKeepAliveTimeoutMax() {      port++;      const listener = listenAndServe({ port }, handler);      const agent = createAgent(`http://127.0.0.1:${port}`);      try {        const req = {          path: "/",          method: "POST",          headers: new Headers({            host: "deno.land",            "Keep-Alive": "max=0, timeout=1000",          }),          body: encode("hello"),        };        const { status, body } = await agent.send(req);        await body.close();        assertEquals(200, status);        await assertThrowsAsync(async () => {          await agent.send(req);        });      } finally {        agent.conn.close();        listener.close();      }    },  );  t.test("serverConnectionClose", async function serverConnectionClose() {    port++;    const listener = listenAndServe({ port }, handler);    const agent = createAgent(`http://127.0.0.1:${port}`);    try {      const req = {        path: "/",        method: "POST",        headers: new Headers({          host: "deno.land",          connection: "close",        }),        body: "hello",      };      const { status, body } = await agent.send(req);      await body.close();      assertEquals(200, status);      await assertThrowsAsync(async () => {        await agent.send(req);      });    } finally {      agent.conn.close();      listener.close();    }  });  t.test("handleKeepAliveConn should respond exclusively", async () => {    const r = new Buffer();    const w = new Buffer();    await writeRequest(r, {      method: "GET",      url: "http://localhost/?q=1",    });    await writeRequest(r, {      method: "GET",      url: "http://localhost/?q=2",    });    await writeRequest(r, {      method: "GET",      url: "http://localhost/?q=3",    });    const d = deferred<void>();    let latch = 3;    handleKeepAliveConn(dummyConn(r, w), async (req) => {      const url = new URL(req.url, "http://dummy");      const i = url.searchParams.get("q")!;      req.respond({ status: 200, body: "resp:" + i }).then(() => {        if (--latch === 0) {          d.resolve();        }      });    });    await d;    const responseReader = new BufReader(w);    const resp1 = await readResponse(responseReader);    assertEquals(await resp1.text(), "resp:1");    const resp2 = await readResponse(responseReader);    assertEquals(await resp2.text(), "resp:2");    const resp3 = await readResponse(responseReader);    assertEquals(await resp3.text(), "resp:3");  });});
function dummyConn(r: Deno.Reader, w: Deno.Writer): Deno.Conn {  const addr: Deno.Addr = { hostname: "0.0.0.0", port: 1, transport: "tcp" };  return {    rid: -1,    close(): void {},    async closeWrite(): Promise<void> {},    localAddr: addr,    remoteAddr: addr,    read: (p) => r.read(p),    write: (p) => w.write(p),  };}