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First pass at streaming http response (denoland/deno_std#16)
Original: 269665873a
This commit is contained in:
Bartek Iwańczuk
Ryan Dahl
parent
579b92de59
commit
f6dae45cd2
6 changed files with 121 additions and 17 deletions
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@ -17,7 +17,7 @@ function init() {
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if (testBytes == null) {
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testBytes = new Uint8Array(N);
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for (let i = 0; i < N; i++) {
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testBytes[i] = "a".charCodeAt(0) + (i % 26);
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testBytes[i] = "a".charCodeAt(0) + i % 26;
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}
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const decoder = new TextDecoder();
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testString = decoder.decode(testBytes);
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@ -109,7 +109,7 @@ test(async function bufioBufReader() {
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for (let i = 0; i < texts.length - 1; i++) {
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texts[i] = str + "\n";
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all += texts[i];
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str += String.fromCharCode((i % 26) + 97);
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str += String.fromCharCode(i % 26 + 97);
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}
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texts[texts.length - 1] = all;
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@ -294,7 +294,7 @@ test(async function bufioWriter() {
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const data = new Uint8Array(8192);
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for (let i = 0; i < data.byteLength; i++) {
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data[i] = charCode(" ") + (i % (charCode("~") - charCode(" ")));
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data[i] = charCode(" ") + i % (charCode("~") - charCode(" "));
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}
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const w = new Buffer();
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@ -5,8 +5,13 @@
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// TODO Add tests like these:
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// https://github.com/indexzero/http-server/blob/master/test/http-server-test.js
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import { listenAndServe, ServerRequest, setContentLength, Response } from "./http";
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import { cwd, readFile, DenoError, ErrorKind, args, stat, readDir } from "deno";
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import {
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listenAndServe,
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ServerRequest,
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setContentLength,
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Response
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} from "./http";
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import { cwd, DenoError, ErrorKind, args, stat, readDir, open } from "deno";
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const dirViewerTemplate = `
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<!DOCTYPE html>
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@ -146,9 +151,10 @@ async function serveDir(req: ServerRequest, dirPath: string, dirName: string) {
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}
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async function serveFile(req: ServerRequest, filename: string) {
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let file = await readFile(filename);
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const file = await open(filename);
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const fileInfo = await stat(filename);
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const headers = new Headers();
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headers.set("content-type", "octet-stream");
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headers.set("content-length", fileInfo.len.toString());
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const res = {
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status: 200,
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45
http.ts
45
http.ts
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@ -1,4 +1,4 @@
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import { listen, Conn } from "deno";
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import { listen, Conn, toAsyncIterator, Reader, copy } from "deno";
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import { BufReader, BufState, BufWriter } from "./bufio.ts";
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import { TextProtoReader } from "./textproto.ts";
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import { STATUS_TEXT } from "./http_status";
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@ -96,16 +96,23 @@ export async function listenAndServe(
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export interface Response {
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status?: number;
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headers?: Headers;
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body?: Uint8Array;
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body?: Uint8Array | Reader;
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}
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export function setContentLength(r: Response): void {
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if (!r.headers) {
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r.headers = new Headers();
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}
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if (r.body) {
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if (!r.headers.has("content-length")) {
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const bodyLength = r.body ? r.body.byteLength : 0;
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if (r.body instanceof Uint8Array) {
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const bodyLength = r.body.byteLength;
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r.headers.append("Content-Length", bodyLength.toString());
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} else {
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r.headers.append("Transfer-Encoding", "chunked");
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}
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}
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}
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}
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@ -116,6 +123,26 @@ export class ServerRequest {
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headers: Headers;
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w: BufWriter;
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private async _streamBody(body: Reader, bodyLength: number) {
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const n = await copy(this.w, body);
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assert(n == bodyLength);
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}
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private async _streamChunkedBody(body: Reader) {
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const encoder = new TextEncoder();
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for await (const chunk of toAsyncIterator(body)) {
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const start = encoder.encode(`${chunk.byteLength.toString(16)}\r\n`);
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const end = encoder.encode("\r\n");
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await this.w.write(start);
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await this.w.write(chunk);
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await this.w.write(end);
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}
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const endChunk = encoder.encode("0\r\n\r\n");
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await this.w.write(endChunk);
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}
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async respond(r: Response): Promise<void> {
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const protoMajor = 1;
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const protoMinor = 1;
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@ -139,9 +166,21 @@ export class ServerRequest {
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const header = new TextEncoder().encode(out);
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let n = await this.w.write(header);
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assert(header.byteLength == n);
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if (r.body) {
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if (r.body instanceof Uint8Array) {
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n = await this.w.write(r.body);
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assert(r.body.byteLength == n);
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} else {
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if (r.headers.has("content-length")) {
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await this._streamBody(
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r.body,
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parseInt(r.headers.get("content-length"))
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);
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} else {
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await this._streamChunkedBody(r.body);
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}
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}
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}
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await this.w.flush();
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58
http_test.ts
Normal file
58
http_test.ts
Normal file
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@ -0,0 +1,58 @@
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// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Ported from
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// https://github.com/golang/go/blob/master/src/net/http/responsewrite_test.go
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import {
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test,
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assert,
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assertEqual
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} from "https://deno.land/x/testing/testing.ts";
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import {
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listenAndServe,
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ServerRequest,
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setContentLength,
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Response
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} from "./http";
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import { Buffer } from "./buffer";
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import { BufWriter } from "./bufio";
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interface ResponseTest {
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response: Response;
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raw: string;
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}
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const responseTests: ResponseTest[] = [
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// Default response
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{
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response: {},
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raw: "HTTP/1.1 200 OK\r\n" + "\r\n"
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},
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// HTTP/1.1, chunked coding; empty trailer; close
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{
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response: {
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status: 200,
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body: new Buffer(new TextEncoder().encode("abcdef"))
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},
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raw:
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"HTTP/1.1 200 OK\r\n" +
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"transfer-encoding: chunked\r\n\r\n" +
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"6\r\nabcdef\r\n0\r\n\r\n"
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}
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];
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test(async function responseWrite() {
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for (const testCase of responseTests) {
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const buf = new Buffer();
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const bufw = new BufWriter(buf);
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const request = new ServerRequest();
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request.w = bufw;
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await request.respond(testCase.response);
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assertEqual(buf.toString(), testCase.raw);
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}
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});
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1
test.ts
1
test.ts
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@ -2,6 +2,7 @@ import { run } from "deno";
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import "./buffer_test.ts";
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import "./bufio_test.ts";
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import "./http_test.ts";
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import "./textproto_test.ts";
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import { runTests, completePromise } from "./file_server_test.ts";
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