10 files changed, 668 insertions, 692 deletions
diff --git a/std/http/cookie_test.ts b/std/http/cookie_test.ts
index 5e29fede7..8ab862bb3 100644
--- a/std/http/cookie_test.ts
+++ b/std/http/cookie_test.ts
@@ -2,9 +2,10 @@
 import { ServerRequest, Response } from "./server.ts";
 import { getCookies, delCookie, setCookie } from "./cookie.ts";
 import { assert, assertEquals } from "../testing/asserts.ts";
+const { test } = Deno;
 
-Deno.test({
-  name: "[HTTP] Cookie parser",
+test({
+  name: "Cookie parser",
   fn(): void {
     const req = new ServerRequest();
     req.headers = new Headers();
@@ -31,8 +32,8 @@ Deno.test({
   }
 });
 
-Deno.test({
-  name: "[HTTP] Cookie Delete",
+test({
+  name: "Cookie Delete",
   fn(): void {
     const res: Response = {};
     delCookie(res, "deno");
@@ -43,8 +44,8 @@ Deno.test({
   }
 });
 
-Deno.test({
-  name: "[HTTP] Cookie Set",
+test({
+  name: "Cookie Set",
   fn(): void {
     const res: Response = {};
 
diff --git a/std/http/file_server.ts b/std/http/file_server.ts
index da2b0b5a2..e1fe14fcf 100755
--- a/std/http/file_server.ts
+++ b/std/http/file_server.ts
@@ -8,14 +8,10 @@
 
 const { args, stat, readDir, open, exit } = Deno;
 import { posix } from "../path/mod.ts";
-import {
-  listenAndServe,
-  ServerRequest,
-  setContentLength,
-  Response
-} from "./server.ts";
+import { listenAndServe, ServerRequest, Response } from "./server.ts";
 import { parse } from "../flags/mod.ts";
 import { assert } from "../testing/asserts.ts";
+import { setContentLength } from "./io.ts";
 
 interface EntryInfo {
   mode: string;
diff --git a/std/http/file_server_test.ts b/std/http/file_server_test.ts
index 7c60d5f56..a023aca3d 100644
--- a/std/http/file_server_test.ts
+++ b/std/http/file_server_test.ts
@@ -3,7 +3,6 @@ import { assert, assertEquals, assertStrContains } from "../testing/asserts.ts";
 import { BufReader } from "../io/bufio.ts";
 import { TextProtoReader } from "../textproto/mod.ts";
 const { test } = Deno;
-
 let fileServer: Deno.Process;
 
 async function startFileServer(): Promise<void> {
diff --git a/std/http/io.ts b/std/http/io.ts
index a51fada54..477bab831 100644
--- a/std/http/io.ts
+++ b/std/http/io.ts
@@ -2,6 +2,8 @@ import { BufReader, UnexpectedEOFError, BufWriter } from "../io/bufio.ts";
 import { TextProtoReader } from "../textproto/mod.ts";
 import { assert } from "../testing/asserts.ts";
 import { encoder } from "../strings/mod.ts";
+import { ServerRequest, Response } from "./server.ts";
+import { STATUS_TEXT } from "./http_status.ts";
 
 export function emptyReader(): Deno.Reader {
   return {
@@ -211,3 +213,176 @@ export async function writeTrailers(
   await writer.write(encoder.encode("\r\n"));
   await writer.flush();
 }
+
+export function setContentLength(r: Response): void {
+  if (!r.headers) {
+    r.headers = new Headers();
+  }
+
+  if (r.body) {
+    if (!r.headers.has("content-length")) {
+      // typeof r.body === "string" handled in writeResponse.
+      if (r.body instanceof Uint8Array) {
+        const bodyLength = r.body.byteLength;
+        r.headers.set("content-length", bodyLength.toString());
+      } else {
+        r.headers.set("transfer-encoding", "chunked");
+      }
+    }
+  }
+}
+
+export async function writeResponse(
+  w: Deno.Writer,
+  r: Response
+): Promise<void> {
+  const protoMajor = 1;
+  const protoMinor = 1;
+  const statusCode = r.status || 200;
+  const statusText = STATUS_TEXT.get(statusCode);
+  const writer = BufWriter.create(w);
+  if (!statusText) {
+    throw Error("bad status code");
+  }
+  if (!r.body) {
+    r.body = new Uint8Array();
+  }
+  if (typeof r.body === "string") {
+    r.body = encoder.encode(r.body);
+  }
+
+  let out = `HTTP/${protoMajor}.${protoMinor} ${statusCode} ${statusText}\r\n`;
+
+  setContentLength(r);
+  assert(r.headers != null);
+  const headers = r.headers;
+
+  for (const [key, value] of headers) {
+    out += `${key}: ${value}\r\n`;
+  }
+  out += "\r\n";
+
+  const header = encoder.encode(out);
+  const n = await writer.write(header);
+  assert(n === header.byteLength);
+
+  if (r.body instanceof Uint8Array) {
+    const n = await writer.write(r.body);
+    assert(n === r.body.byteLength);
+  } else if (headers.has("content-length")) {
+    const contentLength = headers.get("content-length");
+    assert(contentLength != null);
+    const bodyLength = parseInt(contentLength);
+    const n = await Deno.copy(writer, r.body);
+    assert(n === bodyLength);
+  } else {
+    await writeChunkedBody(writer, r.body);
+  }
+  if (r.trailers) {
+    const t = await r.trailers();
+    await writeTrailers(writer, headers, t);
+  }
+  await writer.flush();
+}
+
+/**
+ * ParseHTTPVersion parses a HTTP version string.
+ * "HTTP/1.0" returns (1, 0, true).
+ * Ported from https://github.com/golang/go/blob/f5c43b9/src/net/http/request.go#L766-L792
+ */
+export function parseHTTPVersion(vers: string): [number, number] {
+  switch (vers) {
+    case "HTTP/1.1":
+      return [1, 1];
+
+    case "HTTP/1.0":
+      return [1, 0];
+
+    default: {
+      const Big = 1000000; // arbitrary upper bound
+      const digitReg = /^\d+$/; // test if string is only digit
+
+      if (!vers.startsWith("HTTP/")) {
+        break;
+      }
+
+      const dot = vers.indexOf(".");
+      if (dot < 0) {
+        break;
+      }
+
+      const majorStr = vers.substring(vers.indexOf("/") + 1, dot);
+      const major = parseInt(majorStr);
+      if (
+        !digitReg.test(majorStr) ||
+        isNaN(major) ||
+        major < 0 ||
+        major > Big
+      ) {
+        break;
+      }
+
+      const minorStr = vers.substring(dot + 1);
+      const minor = parseInt(minorStr);
+      if (
+        !digitReg.test(minorStr) ||
+        isNaN(minor) ||
+        minor < 0 ||
+        minor > Big
+      ) {
+        break;
+      }
+
+      return [major, minor];
+    }
+  }
+
+  throw new Error(`malformed HTTP version ${vers}`);
+}
+
+export async function readRequest(
+  conn: Deno.Conn,
+  bufr: BufReader
+): Promise<ServerRequest | Deno.EOF> {
+  const tp = new TextProtoReader(bufr);
+  const firstLine = await tp.readLine(); // e.g. GET /index.html HTTP/1.0
+  if (firstLine === Deno.EOF) return Deno.EOF;
+  const headers = await tp.readMIMEHeader();
+  if (headers === Deno.EOF) throw new UnexpectedEOFError();
+
+  const req = new ServerRequest();
+  req.conn = conn;
+  req.r = bufr;
+  [req.method, req.url, req.proto] = firstLine.split(" ", 3);
+  [req.protoMinor, req.protoMajor] = parseHTTPVersion(req.proto);
+  req.headers = headers;
+  fixLength(req);
+  return req;
+}
+
+function fixLength(req: ServerRequest): void {
+  const contentLength = req.headers.get("Content-Length");
+  if (contentLength) {
+    const arrClen = contentLength.split(",");
+    if (arrClen.length > 1) {
+      const distinct = [...new Set(arrClen.map((e): string => e.trim()))];
+      if (distinct.length > 1) {
+        throw Error("cannot contain multiple Content-Length headers");
+      } else {
+        req.headers.set("Content-Length", distinct[0]);
+      }
+    }
+    const c = req.headers.get("Content-Length");
+    if (req.method === "HEAD" && c && c !== "0") {
+      throw Error("http: method cannot contain a Content-Length");
+    }
+    if (c && req.headers.has("transfer-encoding")) {
+      // A sender MUST NOT send a Content-Length header field in any message
+      // that contains a Transfer-Encoding header field.
+      // rfc: https://tools.ietf.org/html/rfc7230#section-3.3.2
+      throw new Error(
+        "http: Transfer-Encoding and Content-Length cannot be send together"
+      );
+    }
+  }
+}
diff --git a/std/http/io_test.ts b/std/http/io_test.ts
index 7e7701596..acaa882f7 100644
--- a/std/http/io_test.ts
+++ b/std/http/io_test.ts
@@ -1,13 +1,26 @@
 import {
   AssertionError,
   assertThrowsAsync,
-  assertEquals
+  assertEquals,
+  assert,
+  assertNotEOF,
+  assertNotEquals
 } from "../testing/asserts.ts";
-import { bodyReader, writeTrailers, readTrailers } from "./io.ts";
+import {
+  bodyReader,
+  writeTrailers,
+  readTrailers,
+  parseHTTPVersion,
+  readRequest,
+  writeResponse
+} from "./io.ts";
 import { encode, decode } from "../strings/mod.ts";
-import { BufReader } from "../io/bufio.ts";
+import { BufReader, UnexpectedEOFError, ReadLineResult } from "../io/bufio.ts";
 import { chunkedBodyReader } from "./io.ts";
-const { test, Buffer } = Deno;
+import { ServerRequest, Response } from "./server.ts";
+import { StringReader } from "../io/readers.ts";
+import { mockConn } from "./mock.ts";
+const { Buffer, test } = Deno;
 
 test("bodyReader", async () => {
   const text = "Hello, Deno";
@@ -165,3 +178,274 @@ test("writeTrailer should throw", async () => {
     "Not trailer"
   );
 });
+
+// Ported from https://github.com/golang/go/blob/f5c43b9/src/net/http/request_test.go#L535-L565
+test("parseHttpVersion", (): void => {
+  const testCases = [
+    { in: "HTTP/0.9", want: [0, 9] },
+    { in: "HTTP/1.0", want: [1, 0] },
+    { in: "HTTP/1.1", want: [1, 1] },
+    { in: "HTTP/3.14", want: [3, 14] },
+    { in: "HTTP", err: true },
+    { in: "HTTP/one.one", err: true },
+    { in: "HTTP/1.1/", err: true },
+    { in: "HTTP/-1.0", err: true },
+    { in: "HTTP/0.-1", err: true },
+    { in: "HTTP/", err: true },
+    { in: "HTTP/1,0", err: true }
+  ];
+  for (const t of testCases) {
+    let r, err;
+    try {
+      r = parseHTTPVersion(t.in);
+    } catch (e) {
+      err = e;
+    }
+    if (t.err) {
+      assert(err instanceof Error, t.in);
+    } else {
+      assertEquals(err, undefined);
+      assertEquals(r, t.want, t.in);
+    }
+  }
+});
+
+test(async function writeUint8ArrayResponse(): Promise<void> {
+  const shortText = "Hello";
+
+  const body = new TextEncoder().encode(shortText);
+  const res: Response = { body };
+
+  const buf = new Deno.Buffer();
+  await writeResponse(buf, res);
+
+  const decoder = new TextDecoder("utf-8");
+  const reader = new BufReader(buf);
+
+  let r: ReadLineResult;
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), `content-length: ${shortText.length}`);
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(r.line.byteLength, 0);
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), shortText);
+  assertEquals(r.more, false);
+
+  const eof = await reader.readLine();
+  assertEquals(eof, Deno.EOF);
+});
+
+test(async function writeStringResponse(): Promise<void> {
+  const body = "Hello";
+
+  const res: Response = { body };
+
+  const buf = new Deno.Buffer();
+  await writeResponse(buf, res);
+
+  const decoder = new TextDecoder("utf-8");
+  const reader = new BufReader(buf);
+
+  let r: ReadLineResult;
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), `content-length: ${body.length}`);
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(r.line.byteLength, 0);
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), body);
+  assertEquals(r.more, false);
+
+  const eof = await reader.readLine();
+  assertEquals(eof, Deno.EOF);
+});
+
+test(async function writeStringReaderResponse(): Promise<void> {
+  const shortText = "Hello";
+
+  const body = new StringReader(shortText);
+  const res: Response = { body };
+
+  const buf = new Deno.Buffer();
+  await writeResponse(buf, res);
+
+  const decoder = new TextDecoder("utf-8");
+  const reader = new BufReader(buf);
+
+  let r: ReadLineResult;
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), "transfer-encoding: chunked");
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(r.line.byteLength, 0);
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), shortText.length.toString());
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), shortText);
+  assertEquals(r.more, false);
+
+  r = assertNotEOF(await reader.readLine());
+  assertEquals(decoder.decode(r.line), "0");
+  assertEquals(r.more, false);
+});
+
+test("writeResponse with trailer", async () => {
+  const w = new Buffer();
+  const body = new StringReader("Hello");
+  await writeResponse(w, {
+    status: 200,
+    headers: new Headers({
+      "transfer-encoding": "chunked",
+      trailer: "deno,node"
+    }),
+    body,
+    trailers: () => new Headers({ deno: "land", node: "js" })
+  });
+  const ret = w.toString();
+  const exp = [
+    "HTTP/1.1 200 OK",
+    "transfer-encoding: chunked",
+    "trailer: deno,node",
+    "",
+    "5",
+    "Hello",
+    "0",
+    "",
+    "deno: land",
+    "node: js",
+    "",
+    ""
+  ].join("\r\n");
+  assertEquals(ret, exp);
+});
+
+test(async function readRequestError(): Promise<void> {
+  const input = `GET / HTTP/1.1
+malformedHeader
+`;
+  const reader = new BufReader(new StringReader(input));
+  let err;
+  try {
+    await readRequest(mockConn(), reader);
+  } catch (e) {
+    err = e;
+  }
+  assert(err instanceof Error);
+  assertEquals(err.message, "malformed MIME header line: malformedHeader");
+});
+
+// Ported from Go
+// https://github.com/golang/go/blob/go1.12.5/src/net/http/request_test.go#L377-L443
+// TODO(zekth) fix tests
+test(async function testReadRequestError(): Promise<void> {
+  const testCases = [
+    {
+      in: "GET / HTTP/1.1\r\nheader: foo\r\n\r\n",
+      headers: [{ key: "header", value: "foo" }]
+    },
+    {
+      in: "GET / HTTP/1.1\r\nheader:foo\r\n",
+      err: UnexpectedEOFError
+    },
+    { in: "", err: Deno.EOF },
+    {
+      in: "HEAD / HTTP/1.1\r\nContent-Length:4\r\n\r\n",
+      err: "http: method cannot contain a Content-Length"
+    },
+    {
+      in: "HEAD / HTTP/1.1\r\n\r\n",
+      headers: []
+    },
+    // Multiple Content-Length values should either be
+    // deduplicated if same or reject otherwise
+    // See Issue 16490.
+    {
+      in:
+        "POST / HTTP/1.1\r\nContent-Length: 10\r\nContent-Length: 0\r\n\r\n" +
+        "Gopher hey\r\n",
+      err: "cannot contain multiple Content-Length headers"
+    },
+    {
+      in:
+        "POST / HTTP/1.1\r\nContent-Length: 10\r\nContent-Length: 6\r\n\r\n" +
+        "Gopher\r\n",
+      err: "cannot contain multiple Content-Length headers"
+    },
+    {
+      in:
+        "PUT / HTTP/1.1\r\nContent-Length: 6 \r\nContent-Length: 6\r\n" +
+        "Content-Length:6\r\n\r\nGopher\r\n",
+      headers: [{ key: "Content-Length", value: "6" }]
+    },
+    {
+      in: "PUT / HTTP/1.1\r\nContent-Length: 1\r\nContent-Length: 6 \r\n\r\n",
+      err: "cannot contain multiple Content-Length headers"
+    },
+    // Setting an empty header is swallowed by textproto
+    // see: readMIMEHeader()
+    // {
+    //   in: "POST / HTTP/1.1\r\nContent-Length:\r\nContent-Length: 3\r\n\r\n",
+    //   err: "cannot contain multiple Content-Length headers"
+    // },
+    {
+      in: "HEAD / HTTP/1.1\r\nContent-Length:0\r\nContent-Length: 0\r\n\r\n",
+      headers: [{ key: "Content-Length", value: "0" }]
+    },
+    {
+      in:
+        "POST / HTTP/1.1\r\nContent-Length:0\r\ntransfer-encoding: " +
+        "chunked\r\n\r\n",
+      headers: [],
+      err: "http: Transfer-Encoding and Content-Length cannot be send together"
+    }
+  ];
+  for (const test of testCases) {
+    const reader = new BufReader(new StringReader(test.in));
+    let err;
+    let req: ServerRequest | Deno.EOF | undefined;
+    try {
+      req = await readRequest(mockConn(), reader);
+    } catch (e) {
+      err = e;
+    }
+    if (test.err === Deno.EOF) {
+      assertEquals(req, Deno.EOF);
+    } else if (typeof test.err === "string") {
+      assertEquals(err.message, test.err);
+    } else if (test.err) {
+      assert(err instanceof (test.err as typeof UnexpectedEOFError));
+    } else {
+      assert(req instanceof ServerRequest);
+      assert(test.headers);
+      assertEquals(err, undefined);
+      assertNotEquals(req, Deno.EOF);
+      for (const h of test.headers) {
+        assertEquals(req.headers.get(h.key), h.value);
+      }
+    }
+  }
+});
diff --git a/std/http/mock.ts b/std/http/mock.ts
new file mode 100644
index 000000000..3a4eeed82
--- /dev/null
+++ b/std/http/mock.ts
@@ -0,0 +1,26 @@
+/** Create dummy Deno.Conn object with given base properties */
+export function mockConn(base: Partial<Deno.Conn> = {}): Deno.Conn {
+  return {
+    localAddr: {
+      transport: "tcp",
+      hostname: "",
+      port: 0
+    },
+    remoteAddr: {
+      transport: "tcp",
+      hostname: "",
+      port: 0
+    },
+    rid: -1,
+    closeRead: (): void => {},
+    closeWrite: (): void => {},
+    read: async (): Promise<number | Deno.EOF> => {
+      return 0;
+    },
+    write: async (): Promise<number> => {
+      return -1;
+    },
+    close: (): void => {},
+    ...base
+  };
+}
diff --git a/std/http/racing_server_test.ts b/std/http/racing_server_test.ts
index 07df92bae..0f228419d 100644
--- a/std/http/racing_server_test.ts
+++ b/std/http/racing_server_test.ts
@@ -1,8 +1,7 @@
-const { connect, run } = Deno;
-
 import { assert, assertEquals } from "../testing/asserts.ts";
 import { BufReader, BufWriter } from "../io/bufio.ts";
 import { TextProtoReader } from "../textproto/mod.ts";
+const { connect, run, test } = Deno;
 
 let server: Deno.Process;
 async function startServer(): Promise<void> {
@@ -59,7 +58,7 @@ content-length: 6
 Step7
 `;
 
-Deno.test(async function serverPipelineRace(): Promise<void> {
+test(async function serverPipelineRace(): Promise<void> {
   await startServer();
 
   const conn = await connect({ port: 4501 });
diff --git a/std/http/server.ts b/std/http/server.ts
index e7d6bd598..6e26e8456 100644
--- a/std/http/server.ts
+++ b/std/http/server.ts
@@ -1,91 +1,19 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
-const { listen, listenTLS, copy } = Deno;
-type Listener = Deno.Listener;
-type Conn = Deno.Conn;
-type Reader = Deno.Reader;
-type Writer = Deno.Writer;
-import { BufReader, BufWriter, UnexpectedEOFError } from "../io/bufio.ts";
-import { TextProtoReader } from "../textproto/mod.ts";
-import { STATUS_TEXT } from "./http_status.ts";
+import { BufReader, BufWriter } from "../io/bufio.ts";
 import { assert } from "../testing/asserts.ts";
 import { deferred, Deferred, MuxAsyncIterator } from "../util/async.ts";
 import {
   bodyReader,
   chunkedBodyReader,
-  writeChunkedBody,
-  writeTrailers,
-  emptyReader
+  emptyReader,
+  writeResponse,
+  readRequest
 } from "./io.ts";
-
-const encoder = new TextEncoder();
-
-export function setContentLength(r: Response): void {
-  if (!r.headers) {
-    r.headers = new Headers();
-  }
-
-  if (r.body) {
-    if (!r.headers.has("content-length")) {
-      // typeof r.body === "string" handled in writeResponse.
-      if (r.body instanceof Uint8Array) {
-        const bodyLength = r.body.byteLength;
-        r.headers.set("content-length", bodyLength.toString());
-      } else {
-        r.headers.set("transfer-encoding", "chunked");
-      }
-    }
-  }
-}
-
-export async function writeResponse(w: Writer, r: Response): Promise<void> {
-  const protoMajor = 1;
-  const protoMinor = 1;
-  const statusCode = r.status || 200;
-  const statusText = STATUS_TEXT.get(statusCode);
-  const writer = BufWriter.create(w);
-  if (!statusText) {
-    throw Error("bad status code");
-  }
-  if (!r.body) {
-    r.body = new Uint8Array();
-  }
-  if (typeof r.body === "string") {
-    r.body = encoder.encode(r.body);
-  }
-
-  let out = `HTTP/${protoMajor}.${protoMinor} ${statusCode} ${statusText}\r\n`;
-
-  setContentLength(r);
-  assert(r.headers != null);
-  const headers = r.headers;
-
-  for (const [key, value] of headers) {
-    out += `${key}: ${value}\r\n`;
-  }
-  out += "\r\n";
-
-  const header = encoder.encode(out);
-  const n = await writer.write(header);
-  assert(n === header.byteLength);
-
-  if (r.body instanceof Uint8Array) {
-    const n = await writer.write(r.body);
-    assert(n === r.body.byteLength);
-  } else if (headers.has("content-length")) {
-    const contentLength = headers.get("content-length");
-    assert(contentLength != null);
-    const bodyLength = parseInt(contentLength);
-    const n = await copy(writer, r.body);
-    assert(n === bodyLength);
-  } else {
-    await writeChunkedBody(writer, r.body);
-  }
-  if (r.trailers) {
-    const t = await r.trailers();
-    await writeTrailers(writer, headers, t);
-  }
-  await writer.flush();
-}
+import { encode } from "../strings/mod.ts";
+import Listener = Deno.Listener;
+import Conn = Deno.Conn;
+import Reader = Deno.Reader;
+const { listen, listenTLS } = Deno;
 
 export class ServerRequest {
   url!: string;
@@ -194,108 +122,6 @@ export class ServerRequest {
   }
 }
 
-function fixLength(req: ServerRequest): void {
-  const contentLength = req.headers.get("Content-Length");
-  if (contentLength) {
-    const arrClen = contentLength.split(",");
-    if (arrClen.length > 1) {
-      const distinct = [...new Set(arrClen.map((e): string => e.trim()))];
-      if (distinct.length > 1) {
-        throw Error("cannot contain multiple Content-Length headers");
-      } else {
-        req.headers.set("Content-Length", distinct[0]);
-      }
-    }
-    const c = req.headers.get("Content-Length");
-    if (req.method === "HEAD" && c && c !== "0") {
-      throw Error("http: method cannot contain a Content-Length");
-    }
-    if (c && req.headers.has("transfer-encoding")) {
-      // A sender MUST NOT send a Content-Length header field in any message
-      // that contains a Transfer-Encoding header field.
-      // rfc: https://tools.ietf.org/html/rfc7230#section-3.3.2
-      throw new Error(
-        "http: Transfer-Encoding and Content-Length cannot be send together"
-      );
-    }
-  }
-}
-
-/**
- * ParseHTTPVersion parses a HTTP version string.
- * "HTTP/1.0" returns (1, 0, true).
- * Ported from https://github.com/golang/go/blob/f5c43b9/src/net/http/request.go#L766-L792
- */
-export function parseHTTPVersion(vers: string): [number, number] {
-  switch (vers) {
-    case "HTTP/1.1":
-      return [1, 1];
-
-    case "HTTP/1.0":
-      return [1, 0];
-
-    default: {
-      const Big = 1000000; // arbitrary upper bound
-      const digitReg = /^\d+$/; // test if string is only digit
-
-      if (!vers.startsWith("HTTP/")) {
-        break;
-      }
-
-      const dot = vers.indexOf(".");
-      if (dot < 0) {
-        break;
-      }
-
-      const majorStr = vers.substring(vers.indexOf("/") + 1, dot);
-      const major = parseInt(majorStr);
-      if (
-        !digitReg.test(majorStr) ||
-        isNaN(major) ||
-        major < 0 ||
-        major > Big
-      ) {
-        break;
-      }
-
-      const minorStr = vers.substring(dot + 1);
-      const minor = parseInt(minorStr);
-      if (
-        !digitReg.test(minorStr) ||
-        isNaN(minor) ||
-        minor < 0 ||
-        minor > Big
-      ) {
-        break;
-      }
-
-      return [major, minor];
-    }
-  }
-
-  throw new Error(`malformed HTTP version ${vers}`);
-}
-
-export async function readRequest(
-  conn: Conn,
-  bufr: BufReader
-): Promise<ServerRequest | Deno.EOF> {
-  const tp = new TextProtoReader(bufr);
-  const firstLine = await tp.readLine(); // e.g. GET /index.html HTTP/1.0
-  if (firstLine === Deno.EOF) return Deno.EOF;
-  const headers = await tp.readMIMEHeader();
-  if (headers === Deno.EOF) throw new UnexpectedEOFError();
-
-  const req = new ServerRequest();
-  req.conn = conn;
-  req.r = bufr;
-  [req.method, req.url, req.proto] = firstLine.split(" ", 3);
-  [req.protoMinor, req.protoMajor] = parseHTTPVersion(req.proto);
-  req.headers = headers;
-  fixLength(req);
-  return req;
-}
-
 export class Server implements AsyncIterable<ServerRequest> {
   private closing = false;
 
@@ -349,7 +175,7 @@ export class Server implements AsyncIterable<ServerRequest> {
       try {
         await writeResponse(req.w, {
           status: 400,
-          body: encoder.encode(`${err.message}\r\n\r\n`)
+          body: encode(`${err.message}\r\n\r\n`)
         });
       } catch (_) {
         // The connection is destroyed.
diff --git a/std/http/server_test.ts b/std/http/server_test.ts
index 70ce5f2f1..fec487925 100644
--- a/std/http/server_test.ts
+++ b/std/http/server_test.ts
@@ -5,65 +5,21 @@
 // Ported from
 // https://github.com/golang/go/blob/master/src/net/http/responsewrite_test.go
 
-const { Buffer, test } = Deno;
 import { TextProtoReader } from "../textproto/mod.ts";
-import {
-  assert,
-  assertEquals,
-  assertNotEquals,
-  assertNotEOF
-} from "../testing/asserts.ts";
-import {
-  Response,
-  ServerRequest,
-  writeResponse,
-  serve,
-  readRequest,
-  parseHTTPVersion
-} from "./server.ts";
-import {
-  BufReader,
-  BufWriter,
-  ReadLineResult,
-  UnexpectedEOFError
-} from "../io/bufio.ts";
+import { assert, assertEquals, assertNotEOF } from "../testing/asserts.ts";
+import { Response, ServerRequest, serve } from "./server.ts";
+import { BufReader, BufWriter } from "../io/bufio.ts";
 import { delay, deferred } from "../util/async.ts";
-import { StringReader } from "../io/readers.ts";
-import { encode } from "../strings/mod.ts";
+import { encode, decode } from "../strings/mod.ts";
+import { mockConn } from "./mock.ts";
+
+const { Buffer, test } = Deno;
 
 interface ResponseTest {
   response: Response;
   raw: string;
 }
 
-const enc = new TextEncoder();
-const dec = new TextDecoder();
-
-type Handler = () => void;
-
-const mockConn = (): Deno.Conn => ({
-  localAddr: {
-    transport: "tcp",
-    hostname: "",
-    port: 0
-  },
-  remoteAddr: {
-    transport: "tcp",
-    hostname: "",
-    port: 0
-  },
-  rid: -1,
-  closeRead: (): void => {},
-  closeWrite: (): void => {},
-  read: async (): Promise<number | Deno.EOF> => {
-    return 0;
-  },
-  write: async (): Promise<number> => {
-    return -1;
-  },
-  close: (): void => {}
-});
-
 const responseTests: ResponseTest[] = [
   // Default response
   {
@@ -112,7 +68,7 @@ test(async function requestContentLength(): Promise<void> {
     const req = new ServerRequest();
     req.headers = new Headers();
     req.headers.set("content-length", "5");
-    const buf = new Buffer(enc.encode("Hello"));
+    const buf = new Buffer(encode("Hello"));
     req.r = new BufReader(buf);
     assertEquals(req.contentLength, 5);
   }
@@ -134,7 +90,7 @@ test(async function requestContentLength(): Promise<void> {
       chunkOffset += chunkSize;
     }
     chunksData += "0\r\n\r\n";
-    const buf = new Buffer(enc.encode(chunksData));
+    const buf = new Buffer(encode(chunksData));
     req.r = new BufReader(buf);
     assertEquals(req.contentLength, null);
   }
@@ -164,9 +120,9 @@ test(async function requestBodyWithContentLength(): Promise<void> {
     const req = new ServerRequest();
     req.headers = new Headers();
     req.headers.set("content-length", "5");
-    const buf = new Buffer(enc.encode("Hello"));
+    const buf = new Buffer(encode("Hello"));
     req.r = new BufReader(buf);
-    const body = dec.decode(await Deno.readAll(req.body));
+    const body = decode(await Deno.readAll(req.body));
     assertEquals(body, "Hello");
   }
 
@@ -176,9 +132,9 @@ test(async function requestBodyWithContentLength(): Promise<void> {
     const req = new ServerRequest();
     req.headers = new Headers();
     req.headers.set("Content-Length", "5000");
-    const buf = new Buffer(enc.encode(longText));
+    const buf = new Buffer(encode(longText));
     req.r = new BufReader(buf);
-    const body = dec.decode(await Deno.readAll(req.body));
+    const body = decode(await Deno.readAll(req.body));
     assertEquals(body, longText);
   }
   // Handler ignored to consume body
@@ -246,9 +202,9 @@ test(async function requestBodyWithTransferEncoding(): Promise<void> {
       chunkOffset += chunkSize;
     }
     chunksData += "0\r\n\r\n";
-    const buf = new Buffer(enc.encode(chunksData));
+    const buf = new Buffer(encode(chunksData));
     req.r = new BufReader(buf);
-    const body = dec.decode(await Deno.readAll(req.body));
+    const body = decode(await Deno.readAll(req.body));
     assertEquals(body, shortText);
   }
 
@@ -270,9 +226,9 @@ test(async function requestBodyWithTransferEncoding(): Promise<void> {
       chunkOffset += chunkSize;
     }
     chunksData += "0\r\n\r\n";
-    const buf = new Buffer(enc.encode(chunksData));
+    const buf = new Buffer(encode(chunksData));
     req.r = new BufReader(buf);
-    const body = dec.decode(await Deno.readAll(req.body));
+    const body = decode(await Deno.readAll(req.body));
     assertEquals(body, longText);
   }
 });
@@ -283,14 +239,14 @@ test(async function requestBodyReaderWithContentLength(): Promise<void> {
     const req = new ServerRequest();
     req.headers = new Headers();
     req.headers.set("content-length", "" + shortText.length);
-    const buf = new Buffer(enc.encode(shortText));
+    const buf = new Buffer(encode(shortText));
     req.r = new BufReader(buf);
     const readBuf = new Uint8Array(6);
     let offset = 0;
     while (offset < shortText.length) {
       const nread = await req.body.read(readBuf);
       assertNotEOF(nread);
-      const s = dec.decode(readBuf.subarray(0, nread as number));
+      const s = decode(readBuf.subarray(0, nread as number));
       assertEquals(shortText.substr(offset, nread as number), s);
       offset += nread as number;
     }
@@ -304,14 +260,14 @@ test(async function requestBodyReaderWithContentLength(): Promise<void> {
     const req = new ServerRequest();
     req.headers = new Headers();
     req.headers.set("Content-Length", "5000");
-    const buf = new Buffer(enc.encode(longText));
+    const buf = new Buffer(encode(longText));
     req.r = new BufReader(buf);
     const readBuf = new Uint8Array(1000);
     let offset = 0;
     while (offset < longText.length) {
       const nread = await req.body.read(readBuf);
       assertNotEOF(nread);
-      const s = dec.decode(readBuf.subarray(0, nread as number));
+      const s = decode(readBuf.subarray(0, nread as number));
       assertEquals(longText.substr(offset, nread as number), s);
       offset += nread as number;
     }
@@ -338,14 +294,14 @@ test(async function requestBodyReaderWithTransferEncoding(): Promise<void> {
       chunkOffset += chunkSize;
     }
     chunksData += "0\r\n\r\n";
-    const buf = new Buffer(enc.encode(chunksData));
+    const buf = new Buffer(encode(chunksData));
     req.r = new BufReader(buf);
     const readBuf = new Uint8Array(6);
     let offset = 0;
     while (offset < shortText.length) {
       const nread = await req.body.read(readBuf);
       assertNotEOF(nread);
-      const s = dec.decode(readBuf.subarray(0, nread as number));
+      const s = decode(readBuf.subarray(0, nread as number));
       assertEquals(shortText.substr(offset, nread as number), s);
       offset += nread as number;
     }
@@ -371,14 +327,14 @@ test(async function requestBodyReaderWithTransferEncoding(): Promise<void> {
       chunkOffset += chunkSize;
     }
     chunksData += "0\r\n\r\n";
-    const buf = new Buffer(enc.encode(chunksData));
+    const buf = new Buffer(encode(chunksData));
     req.r = new BufReader(buf);
     const readBuf = new Uint8Array(1000);
     let offset = 0;
     while (offset < longText.length) {
       const nread = await req.body.read(readBuf);
       assertNotEOF(nread);
-      const s = dec.decode(readBuf.subarray(0, nread as number));
+      const s = decode(readBuf.subarray(0, nread as number));
       assertEquals(longText.substr(offset, nread as number), s);
       offset += nread as number;
     }
@@ -387,382 +343,99 @@ test(async function requestBodyReaderWithTransferEncoding(): Promise<void> {
   }
 });
 
-test(async function writeUint8ArrayResponse(): Promise<void> {
-  const shortText = "Hello";
-
-  const body = new TextEncoder().encode(shortText);
-  const res: Response = { body };
-
-  const buf = new Deno.Buffer();
-  await writeResponse(buf, res);
-
-  const decoder = new TextDecoder("utf-8");
-  const reader = new BufReader(buf);
-
-  let r: ReadLineResult;
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), `content-length: ${shortText.length}`);
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(r.line.byteLength, 0);
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), shortText);
-  assertEquals(r.more, false);
-
-  const eof = await reader.readLine();
-  assertEquals(eof, Deno.EOF);
-});
-
-test(async function writeStringResponse(): Promise<void> {
-  const body = "Hello";
-
-  const res: Response = { body };
-
-  const buf = new Deno.Buffer();
-  await writeResponse(buf, res);
-
-  const decoder = new TextDecoder("utf-8");
-  const reader = new BufReader(buf);
-
-  let r: ReadLineResult;
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), `content-length: ${body.length}`);
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(r.line.byteLength, 0);
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), body);
-  assertEquals(r.more, false);
-
-  const eof = await reader.readLine();
-  assertEquals(eof, Deno.EOF);
-});
-
-test(async function writeStringReaderResponse(): Promise<void> {
-  const shortText = "Hello";
-
-  const body = new StringReader(shortText);
-  const res: Response = { body };
-
-  const buf = new Deno.Buffer();
-  await writeResponse(buf, res);
-
-  const decoder = new TextDecoder("utf-8");
-  const reader = new BufReader(buf);
-
-  let r: ReadLineResult;
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), "transfer-encoding: chunked");
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(r.line.byteLength, 0);
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), shortText.length.toString());
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), shortText);
-  assertEquals(r.more, false);
-
-  r = assertNotEOF(await reader.readLine());
-  assertEquals(decoder.decode(r.line), "0");
-  assertEquals(r.more, false);
-});
-
-test("writeResponse with trailer", async () => {
-  const w = new Buffer();
-  const body = new StringReader("Hello");
-  await writeResponse(w, {
-    status: 200,
-    headers: new Headers({
-      "transfer-encoding": "chunked",
-      trailer: "deno,node"
-    }),
-    body,
-    trailers: () => new Headers({ deno: "land", node: "js" })
+test("destroyed connection", async (): Promise<void> => {
+  // Runs a simple server as another process
+  const p = Deno.run({
+    args: [Deno.execPath(), "--allow-net", "http/testdata/simple_server.ts"],
+    stdout: "piped"
   });
-  const ret = w.toString();
-  const exp = [
-    "HTTP/1.1 200 OK",
-    "transfer-encoding: chunked",
-    "trailer: deno,node",
-    "",
-    "5",
-    "Hello",
-    "0",
-    "",
-    "deno: land",
-    "node: js",
-    "",
-    ""
-  ].join("\r\n");
-  assertEquals(ret, exp);
-});
 
-test(async function readRequestError(): Promise<void> {
-  const input = `GET / HTTP/1.1
-malformedHeader
-`;
-  const reader = new BufReader(new StringReader(input));
-  let err;
   try {
-    await readRequest(mockConn(), reader);
-  } catch (e) {
-    err = e;
-  }
-  assert(err instanceof Error);
-  assertEquals(err.message, "malformed MIME header line: malformedHeader");
-});
-
-// Ported from Go
-// https://github.com/golang/go/blob/go1.12.5/src/net/http/request_test.go#L377-L443
-// TODO(zekth) fix tests
-test(async function testReadRequestError(): Promise<void> {
-  const testCases = [
-    {
-      in: "GET / HTTP/1.1\r\nheader: foo\r\n\r\n",
-      headers: [{ key: "header", value: "foo" }]
-    },
-    {
-      in: "GET / HTTP/1.1\r\nheader:foo\r\n",
-      err: UnexpectedEOFError
-    },
-    { in: "", err: Deno.EOF },
-    {
-      in: "HEAD / HTTP/1.1\r\nContent-Length:4\r\n\r\n",
-      err: "http: method cannot contain a Content-Length"
-    },
-    {
-      in: "HEAD / HTTP/1.1\r\n\r\n",
-      headers: []
-    },
-    // Multiple Content-Length values should either be
-    // deduplicated if same or reject otherwise
-    // See Issue 16490.
-    {
-      in:
-        "POST / HTTP/1.1\r\nContent-Length: 10\r\nContent-Length: 0\r\n\r\n" +
-        "Gopher hey\r\n",
-      err: "cannot contain multiple Content-Length headers"
-    },
-    {
-      in:
-        "POST / HTTP/1.1\r\nContent-Length: 10\r\nContent-Length: 6\r\n\r\n" +
-        "Gopher\r\n",
-      err: "cannot contain multiple Content-Length headers"
-    },
-    {
-      in:
-        "PUT / HTTP/1.1\r\nContent-Length: 6 \r\nContent-Length: 6\r\n" +
-        "Content-Length:6\r\n\r\nGopher\r\n",
-      headers: [{ key: "Content-Length", value: "6" }]
-    },
-    {
-      in: "PUT / HTTP/1.1\r\nContent-Length: 1\r\nContent-Length: 6 \r\n\r\n",
-      err: "cannot contain multiple Content-Length headers"
-    },
-    // Setting an empty header is swallowed by textproto
-    // see: readMIMEHeader()
-    // {
-    //   in: "POST / HTTP/1.1\r\nContent-Length:\r\nContent-Length: 3\r\n\r\n",
-    //   err: "cannot contain multiple Content-Length headers"
-    // },
-    {
-      in: "HEAD / HTTP/1.1\r\nContent-Length:0\r\nContent-Length: 0\r\n\r\n",
-      headers: [{ key: "Content-Length", value: "0" }]
-    },
-    {
-      in:
-        "POST / HTTP/1.1\r\nContent-Length:0\r\ntransfer-encoding: " +
-        "chunked\r\n\r\n",
-      headers: [],
-      err: "http: Transfer-Encoding and Content-Length cannot be send together"
-    }
-  ];
-  for (const test of testCases) {
-    const reader = new BufReader(new StringReader(test.in));
-    let err;
-    let req: ServerRequest | Deno.EOF | undefined;
-    try {
-      req = await readRequest(mockConn(), reader);
-    } catch (e) {
-      err = e;
-    }
-    if (test.err === Deno.EOF) {
-      assertEquals(req, Deno.EOF);
-    } else if (typeof test.err === "string") {
-      assertEquals(err.message, test.err);
-    } else if (test.err) {
-      assert(err instanceof (test.err as typeof UnexpectedEOFError));
-    } else {
-      assert(req instanceof ServerRequest);
-      assert(test.headers);
-      assertEquals(err, undefined);
-      assertNotEquals(req, Deno.EOF);
-      for (const h of test.headers) {
-        assertEquals(req.headers.get(h.key), h.value);
-      }
-    }
+    const r = new TextProtoReader(new BufReader(p.stdout!));
+    const s = await r.readLine();
+    assert(s !== Deno.EOF && s.includes("server listening"));
+
+    let serverIsRunning = true;
+    p.status()
+      .then((): void => {
+        serverIsRunning = false;
+      })
+      .catch((_): void => {}); // Ignores the error when closing the process.
+
+    await delay(100);
+
+    // Reqeusts to the server and immediately closes the connection
+    const conn = await Deno.connect({ port: 4502 });
+    await conn.write(new TextEncoder().encode("GET / HTTP/1.0\n\n"));
+    conn.close();
+
+    // Waits for the server to handle the above (broken) request
+    await delay(100);
+
+    assert(serverIsRunning);
+  } finally {
+    // Stops the sever.
+    p.close();
   }
 });
 
-// Ported from https://github.com/golang/go/blob/f5c43b9/src/net/http/request_test.go#L535-L565
-test({
-  name: "[http] parseHttpVersion",
-  fn(): void {
-    const testCases = [
-      { in: "HTTP/0.9", want: [0, 9] },
-      { in: "HTTP/1.0", want: [1, 0] },
-      { in: "HTTP/1.1", want: [1, 1] },
-      { in: "HTTP/3.14", want: [3, 14] },
-      { in: "HTTP", err: true },
-      { in: "HTTP/one.one", err: true },
-      { in: "HTTP/1.1/", err: true },
-      { in: "HTTP/-1.0", err: true },
-      { in: "HTTP/0.-1", err: true },
-      { in: "HTTP/", err: true },
-      { in: "HTTP/1,0", err: true }
-    ];
-    for (const t of testCases) {
-      let r, err;
-      try {
-        r = parseHTTPVersion(t.in);
-      } catch (e) {
-        err = e;
-      }
-      if (t.err) {
-        assert(err instanceof Error, t.in);
-      } else {
-        assertEquals(err, undefined);
-        assertEquals(r, t.want, t.in);
-      }
-    }
-  }
-});
-
-test({
-  name: "[http] destroyed connection",
-  async fn(): Promise<void> {
-    // Runs a simple server as another process
-    const p = Deno.run({
-      args: [Deno.execPath(), "--allow-net", "http/testdata/simple_server.ts"],
-      stdout: "piped"
-    });
-
-    try {
-      const r = new TextProtoReader(new BufReader(p.stdout!));
-      const s = await r.readLine();
-      assert(s !== Deno.EOF && s.includes("server listening"));
-
-      let serverIsRunning = true;
-      p.status()
-        .then((): void => {
-          serverIsRunning = false;
-        })
-        .catch((_): void => {}); // Ignores the error when closing the process.
-
-      await delay(100);
-
-      // Reqeusts to the server and immediately closes the connection
-      const conn = await Deno.connect({ port: 4502 });
-      await conn.write(new TextEncoder().encode("GET / HTTP/1.0\n\n"));
-      conn.close();
-
-      // Waits for the server to handle the above (broken) request
-      await delay(100);
-
-      assert(serverIsRunning);
-    } finally {
-      // Stops the sever.
-      p.close();
-    }
-  }
-});
+test("serveTLS", async (): Promise<void> => {
+  // Runs a simple server as another process
+  const p = Deno.run({
+    args: [
+      Deno.execPath(),
+      "--allow-net",
+      "--allow-read",
+      "http/testdata/simple_https_server.ts"
+    ],
+    stdout: "piped"
+  });
 
-test({
-  name: "[http] serveTLS",
-  async fn(): Promise<void> {
-    // Runs a simple server as another process
-    const p = Deno.run({
-      args: [
-        Deno.execPath(),
-        "--allow-net",
-        "--allow-read",
-        "http/testdata/simple_https_server.ts"
-      ],
-      stdout: "piped"
+  try {
+    const r = new TextProtoReader(new BufReader(p.stdout!));
+    const s = await r.readLine();
+    assert(
+      s !== Deno.EOF && s.includes("server listening"),
+      "server must be started"
+    );
+
+    let serverIsRunning = true;
+    p.status()
+      .then((): void => {
+        serverIsRunning = false;
+      })
+      .catch((_): void => {}); // Ignores the error when closing the process.
+
+    // Requests to the server and immediately closes the connection
+    const conn = await Deno.connectTLS({
+      hostname: "localhost",
+      port: 4503,
+      certFile: "http/testdata/tls/RootCA.pem"
     });
-
-    try {
-      const r = new TextProtoReader(new BufReader(p.stdout!));
-      const s = await r.readLine();
-      assert(
-        s !== Deno.EOF && s.includes("server listening"),
-        "server must be started"
-      );
-
-      let serverIsRunning = true;
-      p.status()
-        .then((): void => {
-          serverIsRunning = false;
-        })
-        .catch((_): void => {}); // Ignores the error when closing the process.
-
-      // Requests to the server and immediately closes the connection
-      const conn = await Deno.connectTLS({
-        hostname: "localhost",
-        port: 4503,
-        certFile: "http/testdata/tls/RootCA.pem"
-      });
-      await Deno.writeAll(
-        conn,
-        new TextEncoder().encode("GET / HTTP/1.0\r\n\r\n")
-      );
-      const res = new Uint8Array(100);
-      const nread = assertNotEOF(await conn.read(res));
-      conn.close();
-      const resStr = new TextDecoder().decode(res.subarray(0, nread));
-      assert(resStr.includes("Hello HTTPS"));
-      assert(serverIsRunning);
-    } finally {
-      // Stops the sever.
-      p.close();
-    }
+    await Deno.writeAll(
+      conn,
+      new TextEncoder().encode("GET / HTTP/1.0\r\n\r\n")
+    );
+    const res = new Uint8Array(100);
+    const nread = assertNotEOF(await conn.read(res));
+    conn.close();
+    const resStr = new TextDecoder().decode(res.subarray(0, nread));
+    assert(resStr.includes("Hello HTTPS"));
+    assert(serverIsRunning);
+  } finally {
+    // Stops the sever.
+    p.close();
   }
 });
 
-test({
-  name: "[http] close server while iterating",
-  async fn(): Promise<void> {
-    const server = serve(":8123");
-    const nextWhileClosing = server[Symbol.asyncIterator]().next();
-    server.close();
-    assertEquals(await nextWhileClosing, { value: undefined, done: true });
+test("close server while iterating", async (): Promise<void> => {
+  const server = serve(":8123");
+  const nextWhileClosing = server[Symbol.asyncIterator]().next();
+  server.close();
+  assertEquals(await nextWhileClosing, { value: undefined, done: true });
 
-    const nextAfterClosing = server[Symbol.asyncIterator]().next();
-    assertEquals(await nextAfterClosing, { value: undefined, done: true });
-  }
+  const nextAfterClosing = server[Symbol.asyncIterator]().next();
+  assertEquals(await nextAfterClosing, { value: undefined, done: true });
 });
 
 // TODO(kevinkassimo): create a test that works on Windows.
@@ -773,60 +446,57 @@ test({
 // We need to find a way to similarly trigger an error on Windows so that
 // we can test if connection is closed.
 if (Deno.build.os !== "win") {
-  test({
-    name: "[http] respond error handling",
-    async fn(): Promise<void> {
-      const connClosedPromise = deferred();
-      const serverRoutine = async (): Promise<void> => {
-        let reqCount = 0;
-        const server = serve(":8124");
-        // @ts-ignore
-        const serverRid = server.listener["rid"];
-        let connRid = -1;
-        for await (const req of server) {
-          connRid = req.conn.rid;
-          reqCount++;
-          await Deno.readAll(req.body);
-          await connClosedPromise;
-          try {
-            await req.respond({
-              body: new TextEncoder().encode("Hello World")
-            });
-            await delay(100);
-            req.done = deferred();
-            // This duplicate respond is to ensure we get a write failure from the
-            // other side. Our client would enter CLOSE_WAIT stage after close(),
-            // meaning first server .send (.respond) after close would still work.
-            // However, a second send would fail under RST, which is similar
-            // to the scenario where a failure happens during .respond
-            await req.respond({
-              body: new TextEncoder().encode("Hello World")
-            });
-          } catch {
-            break;
-          }
+  test("respond error handling", async (): Promise<void> => {
+    const connClosedPromise = deferred();
+    const serverRoutine = async (): Promise<void> => {
+      let reqCount = 0;
+      const server = serve(":8124");
+      // @ts-ignore
+      const serverRid = server.listener["rid"];
+      let connRid = -1;
+      for await (const req of server) {
+        connRid = req.conn.rid;
+        reqCount++;
+        await Deno.readAll(req.body);
+        await connClosedPromise;
+        try {
+          await req.respond({
+            body: new TextEncoder().encode("Hello World")
+          });
+          await delay(100);
+          req.done = deferred();
+          // This duplicate respond is to ensure we get a write failure from the
+          // other side. Our client would enter CLOSE_WAIT stage after close(),
+          // meaning first server .send (.respond) after close would still work.
+          // However, a second send would fail under RST, which is similar
+          // to the scenario where a failure happens during .respond
+          await req.respond({
+            body: new TextEncoder().encode("Hello World")
+          });
+        } catch {
+          break;
         }
-        server.close();
-        const resources = Deno.resources();
-        assert(reqCount === 1);
-        // Server should be gone
-        assert(!(serverRid in resources));
-        // The connection should be destroyed
-        assert(!(connRid in resources));
-      };
-      const p = serverRoutine();
-      const conn = await Deno.connect({
-        hostname: "127.0.0.1",
-        port: 8124
-      });
-      await Deno.writeAll(
-        conn,
-        new TextEncoder().encode("GET / HTTP/1.1\r\n\r\n")
-      );
-      conn.close(); // abruptly closing connection before response.
-      // conn on server side enters CLOSE_WAIT state.
-      connClosedPromise.resolve();
-      await p;
-    }
+      }
+      server.close();
+      const resources = Deno.resources();
+      assert(reqCount === 1);
+      // Server should be gone
+      assert(!(serverRid in resources));
+      // The connection should be destroyed
+      assert(!(connRid in resources));
+    };
+    const p = serverRoutine();
+    const conn = await Deno.connect({
+      hostname: "127.0.0.1",
+      port: 8124
+    });
+    await Deno.writeAll(
+      conn,
+      new TextEncoder().encode("GET / HTTP/1.1\r\n\r\n")
+    );
+    conn.close(); // abruptly closing connection before response.
+    // conn on server side enters CLOSE_WAIT state.
+    connClosedPromise.resolve();
+    await p;
   });
 }
diff --git a/std/ws/mod.ts b/std/ws/mod.ts
index 3128a88b5..7a6e14a13 100644
--- a/std/ws/mod.ts
+++ b/std/ws/mod.ts
@@ -5,7 +5,7 @@ import { hasOwnProperty } from "../util/has_own_property.ts";
 import { BufReader, BufWriter, UnexpectedEOFError } from "../io/bufio.ts";
 import { readLong, readShort, sliceLongToBytes } from "../io/ioutil.ts";
 import { Sha1 } from "./sha1.ts";
-import { writeResponse } from "../http/server.ts";
+import { writeResponse } from "../http/io.ts";
 import { TextProtoReader } from "../textproto/mod.ts";
 import { Deferred, deferred } from "../util/async.ts";
 import { assertNotEOF } from "../testing/asserts.ts";