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denoland-deno/std/http/_io_test.ts
2021-01-10 21:59:07 -05:00

494 lines
14 KiB
TypeScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
import {
assert,
assertEquals,
assertNotEquals,
assertThrowsAsync,
} from "../testing/asserts.ts";
import {
bodyReader,
chunkedBodyReader,
parseHTTPVersion,
readRequest,
readTrailers,
writeResponse,
writeTrailers,
} from "./_io.ts";
import { decode, encode } from "../encoding/utf8.ts";
import { BufReader, ReadLineResult } from "../io/bufio.ts";
import { Response, ServerRequest } from "./server.ts";
import { StringReader } from "../io/readers.ts";
import { mockConn } from "./_mock_conn.ts";
Deno.test("bodyReader", async () => {
const text = "Hello, Deno";
const r = bodyReader(
text.length,
new BufReader(new Deno.Buffer(encode(text))),
);
assertEquals(decode(await Deno.readAll(r)), text);
});
function chunkify(n: number, char: string): string {
const v = Array.from({ length: n })
.map(() => `${char}`)
.join("");
return `${n.toString(16)}\r\n${v}\r\n`;
}
Deno.test("chunkedBodyReader", async () => {
const body = [
chunkify(3, "a"),
chunkify(5, "b"),
chunkify(11, "c"),
chunkify(22, "d"),
chunkify(0, ""),
].join("");
const h = new Headers();
const r = chunkedBodyReader(h, new BufReader(new Deno.Buffer(encode(body))));
let result: number | null;
// Use small buffer as some chunks exceed buffer size
const buf = new Uint8Array(5);
const dest = new Deno.Buffer();
while ((result = await r.read(buf)) !== null) {
const len = Math.min(buf.byteLength, result);
await dest.write(buf.subarray(0, len));
}
const exp = "aaabbbbbcccccccccccdddddddddddddddddddddd";
assertEquals(new TextDecoder().decode(dest.bytes()), exp);
});
Deno.test("chunkedBodyReader with trailers", async () => {
const body = [
chunkify(3, "a"),
chunkify(5, "b"),
chunkify(11, "c"),
chunkify(22, "d"),
chunkify(0, ""),
"deno: land\r\n",
"node: js\r\n",
"\r\n",
].join("");
const h = new Headers({
trailer: "deno,node",
});
const r = chunkedBodyReader(h, new BufReader(new Deno.Buffer(encode(body))));
assertEquals(h.has("trailer"), true);
assertEquals(h.has("deno"), false);
assertEquals(h.has("node"), false);
const act = decode(await Deno.readAll(r));
const exp = "aaabbbbbcccccccccccdddddddddddddddddddddd";
assertEquals(act, exp);
assertEquals(h.has("trailer"), false);
assertEquals(h.get("deno"), "land");
assertEquals(h.get("node"), "js");
});
Deno.test("readTrailers", async () => {
const h = new Headers({
trailer: "Deno, Node",
});
const trailer = ["deno: land", "node: js", "", ""].join("\r\n");
await readTrailers(h, new BufReader(new Deno.Buffer(encode(trailer))));
assertEquals(h.has("trailer"), false);
assertEquals(h.get("deno"), "land");
assertEquals(h.get("node"), "js");
});
Deno.test(
"readTrailer should throw if undeclared headers found in trailer",
async () => {
const patterns = [
["deno,node", "deno: land\r\nnode: js\r\ngo: lang\r\n\r\n"],
["deno", "node: js\r\n\r\n"],
["deno", "node:js\r\ngo: lang\r\n\r\n"],
];
for (const [header, trailer] of patterns) {
const h = new Headers({
trailer: header,
});
await assertThrowsAsync(
async () => {
await readTrailers(
h,
new BufReader(new Deno.Buffer(encode(trailer))),
);
},
Deno.errors.InvalidData,
`Undeclared trailers: [ "`,
);
}
},
);
Deno.test(
"readTrailer should throw if trailer contains prohibited fields",
async () => {
for (const f of ["Content-Length", "Trailer", "Transfer-Encoding"]) {
const h = new Headers({
trailer: f,
});
await assertThrowsAsync(
async () => {
await readTrailers(h, new BufReader(new Deno.Buffer()));
},
Deno.errors.InvalidData,
`Prohibited trailer names: [ "`,
);
}
},
);
Deno.test("writeTrailer", async () => {
const w = new Deno.Buffer();
await writeTrailers(
w,
new Headers({ "transfer-encoding": "chunked", trailer: "deno,node" }),
new Headers({ deno: "land", node: "js" }),
);
assertEquals(
new TextDecoder().decode(w.bytes()),
"deno: land\r\nnode: js\r\n\r\n",
);
});
Deno.test("writeTrailer should throw", async () => {
const w = new Deno.Buffer();
await assertThrowsAsync(
() => {
return writeTrailers(w, new Headers(), new Headers());
},
TypeError,
"Missing trailer header.",
);
await assertThrowsAsync(
() => {
return writeTrailers(w, new Headers({ trailer: "deno" }), new Headers());
},
TypeError,
`Trailers are only allowed for "transfer-encoding: chunked", got "transfer-encoding: null".`,
);
for (const f of ["content-length", "trailer", "transfer-encoding"]) {
await assertThrowsAsync(
() => {
return writeTrailers(
w,
new Headers({ "transfer-encoding": "chunked", trailer: f }),
new Headers({ [f]: "1" }),
);
},
TypeError,
`Prohibited trailer names: [ "`,
);
}
await assertThrowsAsync(
() => {
return writeTrailers(
w,
new Headers({ "transfer-encoding": "chunked", trailer: "deno" }),
new Headers({ node: "js" }),
);
},
TypeError,
`Undeclared trailers: [ "node" ].`,
);
});
// Ported from https://github.com/golang/go/blob/f5c43b9/src/net/http/request_test.go#L535-L565
Deno.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 },
{ in: "HTTP/1.1000001", 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);
}
}
});
Deno.test("writeUint8ArrayResponse", async function (): 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 | null = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), `content-length: ${shortText.length}`);
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(r.line.byteLength, 0);
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), shortText);
assertEquals(r.more, false);
const eof = await reader.readLine();
assertEquals(eof, null);
});
Deno.test("writeStringResponse", async function (): 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 | null = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), `content-length: ${body.length}`);
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(r.line.byteLength, 0);
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), body);
assertEquals(r.more, false);
const eof = await reader.readLine();
assertEquals(eof, null);
});
Deno.test("writeStringReaderResponse", async function (): 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 | null = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), "HTTP/1.1 200 OK");
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), "transfer-encoding: chunked");
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(r.line.byteLength, 0);
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), shortText.length.toString());
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), shortText);
assertEquals(r.more, false);
r = await reader.readLine();
assert(r !== null);
assertEquals(decoder.decode(r.line), "0");
assertEquals(r.more, false);
});
Deno.test("writeResponse with trailer", async () => {
const w = new Deno.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 = new TextDecoder().decode(w.bytes());
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);
});
Deno.test("writeResponseShouldNotModifyOriginHeaders", async () => {
const headers = new Headers();
const buf = new Deno.Buffer();
await writeResponse(buf, { body: "foo", headers });
assert(decode(await Deno.readAll(buf)).includes("content-length: 3"));
await writeResponse(buf, { body: "hello", headers });
assert(decode(await Deno.readAll(buf)).includes("content-length: 5"));
});
Deno.test("readRequestError", async function (): 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
Deno.test("testReadRequestError", async function (): 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: Deno.errors.UnexpectedEof,
},
{
in: "POST / HTTP/1.0\r\n\r\n",
headers: [],
version: true,
},
{ in: "", eof: true },
{
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 | null = null;
try {
req = await readRequest(mockConn(), reader);
} catch (e) {
err = e;
}
if (test.eof) {
assertEquals(req, null);
} else if (typeof test.err === "string") {
assertEquals(err.message, test.err);
} else if (test.err) {
assert(err instanceof (test.err as typeof Deno.errors.UnexpectedEof));
} else {
assert(req instanceof ServerRequest);
if (test.version) {
// return value order of parseHTTPVersion() function have to match with [req.protoMajor, req.protoMinor];
const version = parseHTTPVersion(test.in.split(" ", 3)[2]);
assertEquals(req.protoMajor, version[0]);
assertEquals(req.protoMinor, version[1]);
}
assert(test.headers);
assertEquals(err, undefined);
assertNotEquals(req, null);
for (const h of test.headers) {
assertEquals(req.headers.get(h.key), h.value);
}
}
}
});