deno/tests/unit/http_test.ts

2857 lines
84 KiB
TypeScript

// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { Buffer, BufReader, BufWriter } from "@std/io/mod.ts";
import { TextProtoReader } from "../testdata/run/textproto.ts";
import {
assert,
assertEquals,
assertRejects,
assertStrictEquals,
assertThrows,
delay,
fail,
} from "./test_util.ts";
import { join } from "@std/path/mod.ts";
const listenPort = 4507;
const listenPort2 = 4508;
const {
buildCaseInsensitiveCommaValueFinder,
// @ts-expect-error TypeScript (as of 3.7) does not support indexing namespaces by symbol
} = Deno[Deno.internal];
async function writeRequestAndReadResponse(conn: Deno.Conn): Promise<string> {
const encoder = new TextEncoder();
const decoder = new TextDecoder();
const w = new BufWriter(conn);
const r = new BufReader(conn);
const body = `GET / HTTP/1.1\r\nHost: 127.0.0.1:${listenPort}\r\n\r\n`;
const writeResult = await w.write(encoder.encode(body));
assertEquals(body.length, writeResult);
await w.flush();
const tpr = new TextProtoReader(r);
const statusLine = await tpr.readLine();
assert(statusLine !== null);
const headers = await tpr.readMimeHeader();
assert(headers !== null);
const chunkedReader = chunkedBodyReader(headers, r);
const buf = new Uint8Array(5);
const dest = new Buffer();
let result: number | null;
while ((result = await chunkedReader.read(buf)) !== null) {
const len = Math.min(buf.byteLength, result);
await dest.write(buf.subarray(0, len));
}
return decoder.decode(dest.bytes());
}
Deno.test({ permissions: { net: true } }, async function httpServerBasic() {
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
assertEquals(new URL(request.url).href, `http://127.0.0.1:${listenPort}/`);
assertEquals(await request.text(), "");
await respondWith(
new Response("Hello World", { headers: { "foo": "bar" } }),
);
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
headers: { "connection": "close" },
});
const clone = resp.clone();
const text = await resp.text();
assertEquals(text, "Hello World");
assertEquals(resp.headers.get("foo"), "bar");
const cloneText = await clone.text();
assertEquals(cloneText, "Hello World");
await promise;
httpConn!.close();
});
// https://github.com/denoland/deno/issues/15107
Deno.test(
{ permissions: { net: true } },
async function httpLazyHeadersIssue15107() {
let headers: Headers;
const promise = (async () => {
const listener = Deno.listen({ port: 2333 });
const conn = await listener.accept();
listener.close();
const httpConn = Deno.serveHttp(conn);
const e = await httpConn.nextRequest();
assert(e);
const { request } = e;
request.text();
headers = request.headers;
httpConn!.close();
})();
const conn = await Deno.connect({ port: 2333 });
// Send GET request with a body + content-length.
const encoder = new TextEncoder();
const body =
`GET / HTTP/1.1\r\nHost: 127.0.0.1:2333\r\nContent-Length: 5\r\n\r\n12345`;
const writeResult = await conn.write(encoder.encode(body));
assertEquals(body.length, writeResult);
await promise;
conn.close();
assertEquals(headers!.get("content-length"), "5");
},
);
Deno.test(
{ permissions: { net: true } },
async function httpReadHeadersAfterClose() {
const promise = (async () => {
const listener = Deno.listen({ port: 2334 });
const conn = await listener.accept();
listener.close();
const httpConn = Deno.serveHttp(conn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
await request.text(); // Read body
await respondWith(new Response("Hello World")); // Closes request
assertThrows(() => request.headers, TypeError, "request closed");
httpConn!.close();
})();
const conn = await Deno.connect({ port: 2334 });
// Send GET request with a body + content-length.
const encoder = new TextEncoder();
const body =
`GET / HTTP/1.1\r\nHost: 127.0.0.1:2333\r\nContent-Length: 5\r\n\r\n12345`;
const writeResult = await conn.write(encoder.encode(body));
assertEquals(body.length, writeResult);
await promise;
conn.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerGetRequestBody() {
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.body, null);
await respondWith(new Response("", { headers: {} }));
})();
const conn = await Deno.connect({ port: listenPort });
// Send GET request with a body + content-length.
const encoder = new TextEncoder();
const body =
`GET / HTTP/1.1\r\nHost: 127.0.0.1:${listenPort}\r\nContent-Length: 5\r\n\r\n12345`;
const writeResult = await conn.write(encoder.encode(body));
assertEquals(body.length, writeResult);
const resp = new Uint8Array(200);
const readResult = await conn.read(resp);
assertEquals(readResult, 138);
conn.close();
await promise;
httpConn!.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerStreamResponse() {
const stream = new TransformStream();
const writer = stream.writable.getWriter();
writer.write(new TextEncoder().encode("hello "));
writer.write(new TextEncoder().encode("world"));
writer.close();
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
httpConn = Deno.serveHttp(conn);
const evt = await httpConn.nextRequest();
assert(evt);
const { request, respondWith } = evt;
assert(!request.body);
await respondWith(new Response(stream.readable));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`);
const respBody = await resp.text();
assertEquals("hello world", respBody);
await promise;
httpConn!.close();
listener.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerStreamRequest() {
const stream = new TransformStream();
const writer = stream.writable.getWriter();
writer.write(new TextEncoder().encode("hello "));
writer.write(new TextEncoder().encode("world"));
writer.close();
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
const evt = await httpConn.nextRequest();
assert(evt);
const { request, respondWith } = evt;
const reqBody = await request.text();
assertEquals("hello world", reqBody);
await respondWith(new Response(""));
// TODO(ry) If we don't call httpConn.nextRequest() here we get "error sending
// request for url (https://localhost:${listenPort}/): connection closed before
// message completed".
assertEquals(await httpConn.nextRequest(), null);
listener.close();
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
body: stream.readable,
method: "POST",
headers: { "connection": "close" },
});
await resp.arrayBuffer();
await promise;
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerStreamDuplex() {
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
httpConn = Deno.serveHttp(conn);
const evt = await httpConn.nextRequest();
assert(evt);
const { request, respondWith } = evt;
assert(request.body);
await respondWith(new Response(request.body));
})();
const ts = new TransformStream();
const writable = ts.writable.getWriter();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
method: "POST",
body: ts.readable,
});
assert(resp.body);
const reader = resp.body.getReader();
await writable.write(new Uint8Array([1]));
const chunk1 = await reader.read();
assert(!chunk1.done);
assertEquals(chunk1.value, new Uint8Array([1]));
await writable.write(new Uint8Array([2]));
const chunk2 = await reader.read();
assert(!chunk2.done);
assertEquals(chunk2.value, new Uint8Array([2]));
await writable.close();
const chunk3 = await reader.read();
assert(chunk3.done);
await promise;
httpConn!.close();
listener.close();
},
);
Deno.test({ permissions: { net: true } }, async function httpServerClose() {
const listener = Deno.listen({ port: listenPort });
const client = await Deno.connect({ port: listenPort });
const httpConn = Deno.serveHttp(await listener.accept());
client.close();
const evt = await httpConn.nextRequest();
assertEquals(evt, null);
// Note httpConn is automatically closed when "done" is reached.
listener.close();
});
Deno.test(
{ permissions: { net: true } },
async function httpServerInvalidMethod() {
const listener = Deno.listen({ port: listenPort });
const client = await Deno.connect({ port: listenPort });
const httpConn = Deno.serveHttp(await listener.accept());
await client.write(new Uint8Array([1, 2, 3]));
await assertRejects(
async () => {
await httpConn.nextRequest();
},
Deno.errors.Http,
"invalid HTTP method parsed",
);
// Note httpConn is automatically closed when it errors.
client.close();
listener.close();
},
);
Deno.test(
{ permissions: { read: true, net: true } },
async function httpServerWithTls() {
const hostname = "localhost";
const port = listenPort;
const promise = (async () => {
const listener = Deno.listenTls({
hostname,
port,
cert: Deno.readTextFileSync("tests/testdata/tls/localhost.crt"),
key: Deno.readTextFileSync("tests/testdata/tls/localhost.key"),
});
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
const evt = await httpConn.nextRequest();
assert(evt);
const { respondWith } = evt;
await respondWith(new Response("Hello World"));
// TODO(ry) If we don't call httpConn.nextRequest() here we get "error sending
// request for url (https://localhost:${listenPort}/): connection closed before
// message completed".
assertEquals(await httpConn.nextRequest(), null);
listener.close();
})();
const caCert = Deno.readTextFileSync("tests/testdata/tls/RootCA.pem");
const client = Deno.createHttpClient({ caCerts: [caCert] });
const resp = await fetch(`https://${hostname}:${port}/`, {
headers: { "connection": "close" },
client,
});
client.close();
const respBody = await resp.text();
assertEquals("Hello World", respBody);
await promise;
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerRegressionHang() {
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
httpConn = Deno.serveHttp(conn);
const event = await httpConn.nextRequest();
assert(event);
const { request, respondWith } = event;
const reqBody = await request.text();
assertEquals("request", reqBody);
await respondWith(new Response("response"));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
method: "POST",
body: "request",
});
const respBody = await resp.text();
assertEquals("response", respBody);
await promise;
httpConn!.close();
listener.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerCancelBodyOnResponseFailure() {
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
const event = await httpConn.nextRequest();
assert(event);
const { respondWith } = event;
let cancelReason: string;
await assertRejects(
async () => {
let interval = 0;
await respondWith(
new Response(
new ReadableStream({
start(controller) {
interval = setInterval(() => {
const message = `data: ${Date.now()}\n\n`;
controller.enqueue(new TextEncoder().encode(message));
}, 200);
},
cancel(reason) {
cancelReason = reason;
clearInterval(interval);
},
}),
),
);
},
Deno.errors.Http,
cancelReason!,
);
assert(cancelReason!);
httpConn!.close();
listener.close();
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`);
await resp.body!.cancel();
await promise;
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerNextRequestErrorExposedInResponse() {
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
const event = await httpConn.nextRequest();
assert(event);
// Start polling for the next request before awaiting response.
const nextRequestPromise = httpConn.nextRequest();
const { respondWith } = event;
await assertRejects(
async () => {
let interval = 0;
await respondWith(
new Response(
new ReadableStream({
start(controller) {
interval = setInterval(() => {
const message = `data: ${Date.now()}\n\n`;
controller.enqueue(new TextEncoder().encode(message));
}, 200);
},
cancel() {
clearInterval(interval);
},
}),
),
);
},
Deno.errors.Http,
"connection closed",
);
// The error from `op_http_accept` reroutes to `respondWith()`.
assertEquals(await nextRequestPromise, null);
listener.close();
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`);
await resp.body!.cancel();
await promise;
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerEmptyBlobResponse() {
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
httpConn = Deno.serveHttp(conn);
const event = await httpConn.nextRequest();
assert(event);
const { respondWith } = event;
await respondWith(new Response(new Blob([])));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`);
const respBody = await resp.text();
assertEquals("", respBody);
await promise;
httpConn!.close();
listener.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerNextRequestResolvesOnClose() {
const httpConnList: Deno.HttpConn[] = [];
async function serve(l: Deno.Listener) {
for await (const conn of l) {
(async () => {
const c = Deno.serveHttp(conn);
httpConnList.push(c);
for await (const { respondWith } of c) {
respondWith(new Response("hello"));
}
})();
}
}
const l = Deno.listen({ port: listenPort });
serve(l);
await delay(300);
const res = await fetch(`http://localhost:${listenPort}/`);
const _text = await res.text();
// Close connection and listener.
httpConnList.forEach((conn) => conn.close());
l.close();
await delay(300);
},
);
Deno.test(
{ permissions: { net: true } },
// Issue: https://github.com/denoland/deno/issues/10870
async function httpServerHang() {
// Quick and dirty way to make a readable stream from a string. Alternatively,
// `readableStreamFromReader(file)` could be used.
function stream(s: string): ReadableStream<Uint8Array> {
return new Response(s).body!;
}
const httpConns: Deno.HttpConn[] = [];
const promise = (async () => {
let count = 0;
const listener = Deno.listen({ port: listenPort });
for await (const conn of listener) {
(async () => {
const httpConn = Deno.serveHttp(conn);
httpConns.push(httpConn);
for await (const { respondWith } of httpConn) {
respondWith(new Response(stream("hello")));
count++;
if (count >= 2) {
listener.close();
}
}
})();
}
})();
const clientConn = await Deno.connect({ port: listenPort });
const r1 = await writeRequestAndReadResponse(clientConn);
assertEquals(r1, "hello");
const r2 = await writeRequestAndReadResponse(clientConn);
assertEquals(r2, "hello");
clientConn.close();
await promise;
for (const conn of httpConns) {
conn.close();
}
},
);
Deno.test(
{ permissions: { net: true } },
// Issue: https://github.com/denoland/deno/issues/10930
async function httpServerStreamingResponse() {
// This test enqueues a single chunk for readable
// stream and waits for client to read that chunk and signal
// it before enqueueing subsequent chunk. Issue linked above
// presented a situation where enqueued chunks were not
// written to the HTTP connection until the next chunk was enqueued.
let counter = 0;
const deferreds = [
Promise.withResolvers<void>(),
Promise.withResolvers<void>(),
Promise.withResolvers<void>(),
];
async function writeRequest(conn: Deno.Conn) {
const encoder = new TextEncoder();
const decoder = new TextDecoder();
const w = new BufWriter(conn);
const r = new BufReader(conn);
const body = `GET / HTTP/1.1\r\nHost: 127.0.0.1:${listenPort}\r\n\r\n`;
const writeResult = await w.write(encoder.encode(body));
assertEquals(body.length, writeResult);
await w.flush();
const tpr = new TextProtoReader(r);
const statusLine = await tpr.readLine();
assert(statusLine !== null);
const headers = await tpr.readMimeHeader();
assert(headers !== null);
const chunkedReader = chunkedBodyReader(headers, r);
const buf = new Uint8Array(5);
const dest = new Buffer();
let result: number | null;
while ((result = await chunkedReader.read(buf)) !== null) {
const len = Math.min(buf.byteLength, result);
await dest.write(buf.subarray(0, len));
// Resolve a deferred - this will make response stream to
// enqueue next chunk.
deferreds[counter - 1].resolve();
}
return decoder.decode(dest.bytes());
}
function periodicStream() {
return new ReadableStream({
start(controller) {
controller.enqueue(`${counter}\n`);
counter++;
},
async pull(controller) {
if (counter >= 3) {
return controller.close();
}
await deferreds[counter - 1].promise;
controller.enqueue(`${counter}\n`);
counter++;
},
}).pipeThrough(new TextEncoderStream());
}
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const finished = (async () => {
const conn = await listener.accept();
httpConn = Deno.serveHttp(conn);
const requestEvent = await httpConn.nextRequest();
const { respondWith } = requestEvent!;
await respondWith(new Response(periodicStream()));
})();
// start a client
const clientConn = await Deno.connect({ port: listenPort });
const r1 = await writeRequest(clientConn);
assertEquals(r1, "0\n1\n2\n");
await finished;
clientConn.close();
httpConn!.close();
listener.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpRequestLatin1Headers() {
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
assertEquals(request.headers.get("X-Header-Test"), "á");
await respondWith(
new Response("", { headers: { "X-Header-Test": "Æ" } }),
);
})();
const clientConn = await Deno.connect({ port: listenPort });
const requestText =
`GET / HTTP/1.1\r\nHost: 127.0.0.1:${listenPort}\r\nX-Header-Test: á\r\n\r\n`;
const requestBytes = new Uint8Array(requestText.length);
for (let i = 0; i < requestText.length; i++) {
requestBytes[i] = requestText.charCodeAt(i);
}
let written = 0;
while (written < requestBytes.byteLength) {
written += await clientConn.write(requestBytes.slice(written));
}
let responseText = "";
const buf = new Uint8Array(1024);
let read;
while ((read = await clientConn.read(buf)) !== null) {
httpConn!.close();
for (let i = 0; i < read; i++) {
responseText += String.fromCharCode(buf[i]);
}
}
clientConn.close();
assert(/\r\n[Xx]-[Hh]eader-[Tt]est: Æ\r\n/.test(responseText));
await promise;
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerRequestWithoutPath() {
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
assertEquals(
new URL(request.url).href,
`http://127.0.0.1:${listenPort}/`,
);
assertEquals(await request.text(), "");
await respondWith(new Response());
})();
const clientConn = await Deno.connect({ port: listenPort });
async function writeRequest(conn: Deno.Conn) {
const encoder = new TextEncoder();
const w = new BufWriter(conn);
const r = new BufReader(conn);
const body =
`CONNECT 127.0.0.1:${listenPort} HTTP/1.1\r\nHost: 127.0.0.1:${listenPort}\r\n\r\n`;
const writeResult = await w.write(encoder.encode(body));
assertEquals(body.length, writeResult);
await w.flush();
const tpr = new TextProtoReader(r);
const statusLine = await tpr.readLine();
assert(statusLine !== null);
const m = statusLine.match(/^(.+?) (.+?) (.+?)$/);
assert(m !== null, "must be matched");
const [_, _proto, status, _ok] = m;
assertEquals(status, "200");
const headers = await tpr.readMimeHeader();
assert(headers !== null);
}
await writeRequest(clientConn);
clientConn.close();
await promise;
httpConn!.close();
},
);
Deno.test({ permissions: { net: true } }, async function httpServerWebSocket() {
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
const httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
const {
response,
socket,
} = Deno.upgradeWebSocket(request);
socket.onerror = () => fail();
socket.onmessage = (m) => {
socket.send(m.data);
socket.close(1001);
};
const close = new Promise<void>((resolve) => {
socket.onclose = () => resolve();
});
await respondWith(response);
await close;
})();
const def = Promise.withResolvers<void>();
const ws = new WebSocket(`ws://localhost:${listenPort}`);
ws.onmessage = (m) => assertEquals(m.data, "foo");
ws.onerror = () => fail();
ws.onclose = () => def.resolve();
ws.onopen = () => ws.send("foo");
await def.promise;
await promise;
});
Deno.test(function httpUpgradeWebSocket() {
const request = new Request("https://deno.land/", {
headers: {
connection: "Upgrade",
upgrade: "websocket",
"sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
},
});
const { response } = Deno.upgradeWebSocket(request);
assertEquals(response.status, 101);
assertEquals(response.headers.get("connection"), "Upgrade");
assertEquals(response.headers.get("upgrade"), "websocket");
assertEquals(
response.headers.get("sec-websocket-accept"),
"s3pPLMBiTxaQ9kYGzzhZRbK+xOo=",
);
});
Deno.test(function httpUpgradeWebSocketMultipleConnectionOptions() {
const request = new Request("https://deno.land/", {
headers: {
connection: "keep-alive, upgrade",
upgrade: "websocket",
"sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
},
});
const { response } = Deno.upgradeWebSocket(request);
assertEquals(response.status, 101);
});
Deno.test(function httpUpgradeWebSocketMultipleUpgradeOptions() {
const request = new Request("https://deno.land/", {
headers: {
connection: "upgrade",
upgrade: "websocket, foo",
"sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
},
});
const { response } = Deno.upgradeWebSocket(request);
assertEquals(response.status, 101);
});
Deno.test(function httpUpgradeWebSocketCaseInsensitiveUpgradeHeader() {
const request = new Request("https://deno.land/", {
headers: {
connection: "upgrade",
upgrade: "Websocket",
"sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
},
});
const { response } = Deno.upgradeWebSocket(request);
assertEquals(response.status, 101);
});
Deno.test(function httpUpgradeWebSocketInvalidUpgradeHeader() {
assertThrows(
() => {
const request = new Request("https://deno.land/", {
headers: {
connection: "upgrade",
upgrade: "invalid",
"sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
},
});
Deno.upgradeWebSocket(request);
},
TypeError,
"Invalid Header: 'upgrade' header must contain 'websocket'",
);
});
Deno.test(function httpUpgradeWebSocketWithoutUpgradeHeader() {
assertThrows(
() => {
const request = new Request("https://deno.land/", {
headers: {
connection: "upgrade",
"sec-websocket-key": "dGhlIHNhbXBsZSBub25jZQ==",
},
});
Deno.upgradeWebSocket(request);
},
TypeError,
"Invalid Header: 'upgrade' header must contain 'websocket'",
);
});
Deno.test(
{ permissions: { net: true } },
async function httpCookieConcatenation() {
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
assertEquals(
new URL(request.url).href,
`http://127.0.0.1:${listenPort}/`,
);
assertEquals(await request.text(), "");
assertEquals(request.headers.get("cookie"), "foo=bar; bar=foo");
await respondWith(new Response("ok"));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
headers: [
["connection", "close"],
["cookie", "foo=bar"],
["cookie", "bar=foo"],
],
});
const text = await resp.text();
assertEquals(text, "ok");
await promise;
httpConn!.close();
},
);
// https://github.com/denoland/deno/issues/11651
Deno.test({ permissions: { net: true } }, async function httpServerPanic() {
const listener = Deno.listen({ port: listenPort });
const client = await Deno.connect({ port: listenPort });
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
// This message is incomplete on purpose, we'll forcefully close client connection
// after it's flushed to cause connection to error out on the server side.
const encoder = new TextEncoder();
await client.write(encoder.encode("GET / HTTP/1.1"));
httpConn.nextRequest();
await client.write(encoder.encode("\r\n\r\n"));
httpConn!.close();
client.close();
listener.close();
});
Deno.test(
{ permissions: { net: true, write: true, read: true } },
async function httpServerCorrectSizeResponse() {
const tmpFile = await Deno.makeTempFile();
using file = await Deno.open(tmpFile, { write: true, read: true });
await file.write(new Uint8Array(70 * 1024).fill(1)); // 70kb sent in 64kb + 6kb chunks
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
httpConn = Deno.serveHttp(conn);
const ev = await httpConn.nextRequest();
const { respondWith } = ev!;
const f = await Deno.open(tmpFile, { read: true });
await respondWith(new Response(f.readable, { status: 200 }));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`);
const body = await resp.arrayBuffer();
assertEquals(body.byteLength, 70 * 1024);
await promise;
httpConn!.close();
listener.close();
},
);
Deno.test(
{ permissions: { net: true, write: true, read: true } },
async function httpServerClosedStream() {
const listener = Deno.listen({ port: listenPort });
const client = await Deno.connect({ port: listenPort });
await client.write(new TextEncoder().encode(
`GET / HTTP/1.0\r\n\r\n`,
));
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
const ev = await httpConn.nextRequest();
const { respondWith } = ev!;
const tmpFile = await Deno.makeTempFile();
const file = await Deno.open(tmpFile, { write: true, read: true });
await file.write(new TextEncoder().encode("hello"));
const reader = await file.readable.getReader();
while (true) {
const { done, value } = await reader.read();
if (done) break;
assert(value);
}
let didThrow = false;
try {
await respondWith(new Response(file.readable));
} catch {
// pass
didThrow = true;
}
assert(didThrow);
httpConn!.close();
listener.close();
client.close();
},
);
// https://github.com/denoland/deno/issues/11595
Deno.test(
{ permissions: { net: true } },
async function httpServerIncompleteMessage() {
const listener = Deno.listen({ port: listenPort });
const client = await Deno.connect({ port: listenPort });
await client.write(new TextEncoder().encode(
`GET / HTTP/1.0\r\n\r\n`,
));
const conn = await listener.accept();
const httpConn = Deno.serveHttp(conn);
const ev = await httpConn.nextRequest();
const { respondWith } = ev!;
const errors: Error[] = [];
const readable = new ReadableStream({
async pull(controller) {
client.close();
await delay(1000);
controller.enqueue(new TextEncoder().encode(
"written to the writable side of a TransformStream",
));
controller.close();
},
cancel(error) {
errors.push(error);
},
});
const res = new Response(readable);
await respondWith(res).catch((error: Error) => errors.push(error));
httpConn!.close();
listener.close();
assert(errors.length >= 1);
for (const error of errors) {
assertEquals(error.name, "Http");
assert(error.message.includes("connection"));
}
},
);
// https://github.com/denoland/deno/issues/11743
Deno.test(
{ permissions: { net: true } },
async function httpServerDoesntLeakResources() {
const listener = Deno.listen({ port: listenPort });
const [conn, clientConn] = await Promise.all([
listener.accept(),
Deno.connect({ port: listenPort }),
]);
const httpConn = Deno.serveHttp(conn);
await Promise.all([
httpConn.nextRequest(),
clientConn.write(new TextEncoder().encode(
`GET / HTTP/1.1\r\nHost: 127.0.0.1:${listenPort}\r\n\r\n`,
)),
]);
httpConn!.close();
listener.close();
clientConn.close();
},
);
// https://github.com/denoland/deno/issues/11926
// verify that the only new resource is "httpConnection", to make
// sure "request" resource is closed even if its body was not read
// by server handler
Deno.test(
{ permissions: { net: true } },
async function httpServerDoesntLeakResources2() {
let listener: Deno.Listener;
let httpConn: Deno.HttpConn;
const promise = (async () => {
listener = Deno.listen({ port: listenPort });
for await (const conn of listener) {
httpConn = Deno.serveHttp(conn);
for await (const { request, respondWith } of httpConn) {
assertEquals(
new URL(request.url).href,
`http://127.0.0.1:${listenPort}/`,
);
// not reading request body on purpose
respondWith(new Response("ok"));
}
}
})();
const response = await fetch(`http://127.0.0.1:${listenPort}`, {
method: "POST",
body: "hello world",
});
await response.text();
listener!.close();
httpConn!.close();
await promise;
},
);
// https://github.com/denoland/deno/pull/12216
Deno.test(
{ permissions: { net: true } },
async function droppedConnSenderNoPanic() {
async function server() {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
const http = Deno.serveHttp(conn);
const evt = await http.nextRequest();
http.close();
try {
await evt!.respondWith(new Response("boom"));
} catch {
// Ignore error.
}
listener.close();
}
async function client() {
try {
const resp = await fetch(`http://127.0.0.1:${listenPort}/`);
await resp.body?.cancel();
} catch {
// Ignore error
}
}
await Promise.all([server(), client()]);
},
);
// https://github.com/denoland/deno/issues/12193
Deno.test(
{ permissions: { net: true } },
async function httpConnConcurrentNextRequestCalls() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ hostname, port });
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const promises = new Array(10).fill(null).map(async (_, i) => {
const event = await httpConn.nextRequest();
assert(event);
const { pathname } = new URL(event.request.url);
assertStrictEquals(pathname, `/${i}`);
const response = new Response(`Response #${i}`);
await event.respondWith(response);
});
await Promise.all(promises);
}
async function client() {
for (let i = 0; i < 10; i++) {
const response = await fetch(`http://${hostname}:${port}/${i}`);
const body = await response.text();
assertStrictEquals(body, `Response #${i}`);
}
}
await Promise.all([server(), delay(100).then(client)]);
httpConn!.close();
listener.close();
},
);
// https://github.com/denoland/deno/pull/12704
// https://github.com/denoland/deno/pull/12732
Deno.test(
{ permissions: { net: true } },
async function httpConnAutoCloseDelayedOnUpgrade() {
const hostname = "localhost";
const port = listenPort;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
const httpConn = Deno.serveHttp(tcpConn);
const event1 = await httpConn.nextRequest() as Deno.RequestEvent;
const event2Promise = httpConn.nextRequest();
const { socket, response } = Deno.upgradeWebSocket(event1.request);
socket.onmessage = (event) => socket.send(event.data);
const socketClosed = new Promise<void>((resolve) => {
socket.onclose = () => resolve();
});
event1.respondWith(response);
const event2 = await event2Promise;
assertStrictEquals(event2, null);
listener.close();
await socketClosed;
}
async function client() {
const socket = new WebSocket(`ws://${hostname}:${port}/`);
socket.onopen = () => socket.send("bla bla");
const closed = new Promise<void>((resolve) => {
socket.onclose = () => resolve();
});
const { data } = await new Promise<MessageEvent<string>>((res) =>
socket.onmessage = res
);
assertStrictEquals(data, "bla bla");
socket.close();
await closed;
}
await Promise.all([server(), client()]);
},
);
// https://github.com/denoland/deno/issues/12741
// https://github.com/denoland/deno/pull/12746
// https://github.com/denoland/deno/pull/12798
Deno.test(
{ permissions: { net: true, run: true } },
async function httpServerDeleteRequestHasBody() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ hostname, port });
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const event = await httpConn.nextRequest() as Deno.RequestEvent;
assert(event.request.body);
const response = new Response();
await event.respondWith(response);
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = ["-X", "DELETE", url];
const { success } = await new Deno.Command("curl", {
args,
stdout: "null",
stderr: "null",
}).output();
assert(success);
}
await Promise.all([server(), client()]);
httpConn!.close();
listener.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerRespondNonAsciiUint8Array() {
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.body, null);
await respondWith(
new Response(new Uint8Array([128]), {}),
);
})();
const resp = await fetch(`http://localhost:${listenPort}/`);
assertEquals(resp.status, 200);
const body = await resp.arrayBuffer();
assertEquals(new Uint8Array(body), new Uint8Array([128]));
await promise;
httpConn!.close();
},
);
function tmpUnixSocketPath(): string {
const folder = Deno.makeTempDirSync();
return join(folder, "socket");
}
// https://github.com/denoland/deno/pull/13628
Deno.test(
{
ignore: Deno.build.os === "windows",
permissions: { read: true, write: true },
},
async function httpServerOnUnixSocket() {
const filePath = tmpUnixSocketPath();
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ path: filePath, transport: "unix" });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
const url = new URL(request.url);
assertEquals(url.protocol, "http+unix:");
assertEquals(decodeURIComponent(url.host), filePath);
assertEquals(url.pathname, "/path/name");
await respondWith(new Response("", { headers: {} }));
})();
// fetch() does not supports unix domain sockets yet https://github.com/denoland/deno/issues/8821
const conn = await Deno.connect({ path: filePath, transport: "unix" });
const encoder = new TextEncoder();
// The Host header must be present and empty if it is not a Internet host name (RFC2616, Section 14.23)
const body = `GET /path/name HTTP/1.1\r\nHost:\r\n\r\n`;
const writeResult = await conn.write(encoder.encode(body));
assertEquals(body.length, writeResult);
const resp = new Uint8Array(200);
const readResult = await conn.read(resp);
assertEquals(readResult, 138);
conn.close();
await promise;
httpConn!.close();
},
);
/* Automatic Body Compression */
const decoder = new TextDecoder();
Deno.test({
name: "http server compresses body - check headers",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const listener = Deno.listen({ hostname, port });
const data = { hello: "deno", now: "with", compressed: "body" };
let httpConn: Deno.HttpConn;
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(JSON.stringify(data), {
headers: { "content-type": "application/json" },
});
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(output.includes("content-encoding: gzip\r\n"));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server compresses body - check body",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const listener = Deno.listen({ hostname, port });
const data = { hello: "deno", now: "with", compressed: "body" };
let httpConn: Deno.HttpConn;
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(JSON.stringify(data), {
headers: { "content-type": "application/json" },
});
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const proc = new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).spawn();
const status = await proc.status;
assert(status.success);
const stdout = proc.stdout
.pipeThrough(new DecompressionStream("gzip"))
.pipeThrough(new TextDecoderStream());
let body = "";
for await (const chunk of stdout) {
body += chunk;
}
assertEquals(JSON.parse(body), data);
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server doesn't compress small body",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(
JSON.stringify({ hello: "deno" }),
{
headers: { "content-type": "application/json" },
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout).toLocaleLowerCase();
assert(output.includes("vary: accept-encoding\r\n"));
assert(!output.includes("content-encoding: "));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server respects accept-encoding weights",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(
request.headers.get("Accept-Encoding"),
"gzip;q=0.8, br;q=1.0, *;q=0.1",
);
const response = new Response(
JSON.stringify({ hello: "deno", now: "with", compressed: "body" }),
{
headers: { "content-type": "application/json" },
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip;q=0.8, br;q=1.0, *;q=0.1",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(output.includes("content-encoding: br\r\n"));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server augments vary header",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(
JSON.stringify({ hello: "deno", now: "with", compressed: "body" }),
{
headers: { "content-type": "application/json", vary: "Accept" },
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding, Accept\r\n"));
assert(output.includes("content-encoding: gzip\r\n"));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server weakens etag header",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(
JSON.stringify({ hello: "deno", now: "with", compressed: "body" }),
{
headers: {
"content-type": "application/json",
etag: "33a64df551425fcc55e4d42a148795d9f25f89d4",
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"curl",
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(
output.includes("etag: W/33a64df551425fcc55e4d42a148795d9f25f89d4\r\n"),
);
assert(output.includes("content-encoding: gzip\r\n"));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server passes through weak etag header",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(
JSON.stringify({ hello: "deno", now: "with", compressed: "body" }),
{
headers: {
"content-type": "application/json",
etag: "W/33a64df551425fcc55e4d42a148795d9f25f89d4",
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(
output.includes("etag: W/33a64df551425fcc55e4d42a148795d9f25f89d4\r\n"),
);
assert(output.includes("content-encoding: gzip\r\n"));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server doesn't compress body when no-transform is set",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(
JSON.stringify({ hello: "deno", now: "with", compressed: "body" }),
{
headers: {
"content-type": "application/json",
"cache-control": "no-transform",
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(!output.includes("content-encoding: "));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server doesn't compress body when content-range is set",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const response = new Response(
JSON.stringify({ hello: "deno", now: "with", compressed: "body" }),
{
headers: {
"content-type": "application/json",
"content-range": "bytes 200-100/67589",
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(!output.includes("content-encoding: "));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server compresses streamed bodies - check headers",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const encoder = new TextEncoder();
const listener = Deno.listen({ hostname, port });
const data = { hello: "deno", now: "with", compressed: "body" };
let httpConn: Deno.HttpConn;
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const bodyInit = new ReadableStream({
start(controller) {
controller.enqueue(encoder.encode(JSON.stringify(data)));
controller.close();
},
});
const response = new Response(
bodyInit,
{ headers: { "content-type": "application/json" } },
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"curl",
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(output.includes("content-encoding: gzip\r\n"));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server compresses streamed bodies - check body",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const encoder = new TextEncoder();
const listener = Deno.listen({ hostname, port });
const data = { hello: "deno", now: "with", compressed: "body" };
let httpConn: Deno.HttpConn;
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const bodyInit = new ReadableStream({
start(controller) {
controller.enqueue(encoder.encode(JSON.stringify(data)));
controller.close();
},
});
const response = new Response(
bodyInit,
{ headers: { "content-type": "application/json" } },
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const proc = new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).spawn();
const status = await proc.status;
assert(status.success);
const stdout = proc.stdout
.pipeThrough(new DecompressionStream("gzip"))
.pipeThrough(new TextDecoderStream());
let body = "";
for await (const chunk of stdout) {
body += chunk;
}
assertEquals(JSON.parse(body), data);
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server updates content-length header if compression is applied",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let contentLength: string;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const body = JSON.stringify({
hello: "deno",
now: "with",
compressed: "body",
});
contentLength = String(body.length);
const response = new Response(
body,
{
headers: {
"content-type": "application/json",
"content-length": contentLength,
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"-i",
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
];
const { success, stdout } = await new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).output();
assert(success);
const output = decoder.decode(stdout);
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(output.includes("content-encoding: gzip\r\n"));
// Ensure the content-length header is updated (but don't check the exact length).
assert(!output.includes(`content-length: ${contentLength}\r\n`));
assert(output.includes("content-length: "));
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server compresses when accept-encoding is deflate, gzip",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let contentLength: string;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "deflate, gzip");
const body = "x".repeat(10000);
contentLength = String(body.length);
const response = new Response(
body,
{
headers: {
"content-length": contentLength,
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const cmd = [
"curl",
"-i",
"--request",
"GET",
"--url",
url,
// "--compressed", // Windows curl does not support --compressed
"--header",
"Accept-Encoding: deflate, gzip",
];
// deno-lint-ignore no-deprecated-deno-api
const proc = Deno.run({ cmd, stdout: "piped", stderr: "null" });
const status = await proc.status();
assert(status.success);
const output = decoder.decode(await proc.output());
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(output.includes("content-encoding: gzip\r\n"));
// Ensure the content-length header is updated.
assert(!output.includes(`content-length: ${contentLength}\r\n`));
assert(output.includes("content-length: "));
proc.close();
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test({
name: "http server custom content-encoding is left untouched",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
let contentLength: string;
let httpConn: Deno.HttpConn;
async function server() {
const listener = Deno.listen({ hostname, port });
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "deflate, gzip");
const body = new Uint8Array([3, 1, 4, 1]);
contentLength = String(body.length);
const response = new Response(
body,
{
headers: {
"content-length": contentLength,
"content-encoding": "arbitrary",
},
},
);
await respondWith(response);
listener.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const cmd = [
"curl",
"-i",
"--request",
"GET",
"--url",
url,
// "--compressed", // Windows curl does not support --compressed
"--header",
"Accept-Encoding: deflate, gzip",
];
// deno-lint-ignore no-deprecated-deno-api
const proc = Deno.run({ cmd, stdout: "piped", stderr: "null" });
const status = await proc.status();
assert(status.success);
const output = decoder.decode(await proc.output());
assert(output.includes("vary: Accept-Encoding\r\n"));
assert(output.includes("content-encoding: arbitrary\r\n"));
proc.close();
}
await Promise.all([server(), client()]);
httpConn!.close();
},
});
Deno.test(
{ permissions: { net: true } },
async function httpServerReadLargeBodyWithContentLength() {
const TLS_PACKET_SIZE = 16 * 1024 + 256;
// We want the body to be read in multiple packets
const body = "aa\n" + "deno.land large body\n".repeat(TLS_PACKET_SIZE) +
"zz";
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
assertEquals(await request.text(), body);
await respondWith(new Response(body));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
method: "POST",
headers: { "connection": "close" },
body,
});
const text = await resp.text();
assertEquals(text, body);
await promise;
httpConn!.close();
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerReadLargeBodyWithTransferChunked() {
const TLS_PACKET_SIZE = 16 * 1024 + 256;
// We want the body to be read in multiple packets
const chunks = [
"aa\n",
"deno.land large body\n".repeat(TLS_PACKET_SIZE),
"zz",
];
const body = chunks.join("");
const stream = new TransformStream();
const writer = stream.writable.getWriter();
for (const chunk of chunks) {
writer.write(new TextEncoder().encode(chunk));
}
writer.close();
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
assertEquals(await request.text(), body);
await respondWith(new Response(body));
})();
const resp = await fetch(`http://127.0.0.1:${listenPort}/`, {
method: "POST",
headers: { "connection": "close" },
body: stream.readable,
});
const text = await resp.text();
assertEquals(text, body);
await promise;
httpConn!.close();
},
);
Deno.test(
{
permissions: { net: true },
},
async function httpServerWithoutExclusiveAccessToTcp() {
const port = listenPort;
const listener = Deno.listen({ port });
const [clientConn, serverConn] = await Promise.all([
Deno.connect({ port }),
listener.accept(),
]);
const buf = new Uint8Array(128);
const readPromise = serverConn.read(buf);
assertThrows(() => Deno.serveHttp(serverConn), Deno.errors.BadResource);
clientConn.close();
listener.close();
await readPromise;
},
);
Deno.test(
{
permissions: { net: true, read: true },
},
async function httpServerWithoutExclusiveAccessToTls() {
const hostname = "localhost";
const port = listenPort;
const listener = Deno.listenTls({
hostname,
port,
cert: await Deno.readTextFile("tests/testdata/tls/localhost.crt"),
key: await Deno.readTextFile("tests/testdata/tls/localhost.key"),
});
const caCerts = [
await Deno.readTextFile("tests/testdata/tls/RootCA.pem"),
];
const [clientConn, serverConn] = await Promise.all([
Deno.connectTls({ hostname, port, caCerts }),
listener.accept(),
]);
await Promise.all([clientConn.handshake(), serverConn.handshake()]);
const buf = new Uint8Array(128);
const readPromise = serverConn.read(buf);
assertThrows(() => Deno.serveHttp(serverConn), Deno.errors.BadResource);
clientConn.close();
listener.close();
await readPromise;
},
);
Deno.test(
{
ignore: Deno.build.os === "windows",
permissions: { read: true, write: true },
},
async function httpServerWithoutExclusiveAccessToUnixSocket() {
const filePath = tmpUnixSocketPath();
const listener = Deno.listen({ path: filePath, transport: "unix" });
const [clientConn, serverConn] = await Promise.all([
Deno.connect({ path: filePath, transport: "unix" }),
listener.accept(),
]);
const buf = new Uint8Array(128);
const readPromise = serverConn.read(buf);
assertThrows(() => Deno.serveHttp(serverConn), Deno.errors.BadResource);
clientConn.close();
listener.close();
await readPromise;
},
);
Deno.test(
{ permissions: { net: true } },
async function httpServerRequestResponseClone() {
const body = "deno".repeat(64 * 1024);
let httpConn: Deno.HttpConn;
const listener = Deno.listen({ port: listenPort });
const promise = (async () => {
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const reqEvent = await httpConn.nextRequest();
assert(reqEvent);
const { request, respondWith } = reqEvent;
const clone = request.clone();
const reader = clone.body!.getReader();
// get first chunk from branch2
const clonedChunks = [];
const { value, done } = await reader.read();
assert(!done);
clonedChunks.push(value);
// consume request after first chunk single read
// readAll should read correctly the rest of the body.
// firstChunk should be in the stream internal buffer
const body1 = await request.text();
while (true) {
const { value, done } = await reader.read();
if (done) break;
clonedChunks.push(value);
}
let offset = 0;
const body2 = new Uint8Array(body.length);
for (const chunk of clonedChunks) {
body2.set(chunk, offset);
offset += chunk.byteLength;
}
assertEquals(body1, body);
assertEquals(body1, new TextDecoder().decode(body2));
await respondWith(new Response(body));
})();
const response = await fetch(`http://localhost:${listenPort}`, {
body,
method: "POST",
});
const clone = response.clone();
assertEquals(await response.text(), await clone.text());
await promise;
httpConn!.close();
},
);
Deno.test({
name: "http server compresses and flushes each chunk of a streamed resource",
permissions: { net: true, run: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const port2 = listenPort2;
const encoder = new TextEncoder();
const listener = Deno.listen({ hostname, port });
const listener2 = Deno.listen({ hostname, port: port2 });
let httpConn: Deno.HttpConn;
async function server() {
const tcpConn = await listener.accept();
httpConn = Deno.serveHttp(tcpConn);
const e = await httpConn.nextRequest();
assert(e);
const { request, respondWith } = e;
assertEquals(request.headers.get("Accept-Encoding"), "gzip, deflate, br");
const resp = await fetch(`http://${hostname}:${port2}/`);
await respondWith(resp);
listener.close();
}
const ts = new TransformStream();
const writer = ts.writable.getWriter();
writer.write(encoder.encode("hello"));
let httpConn2: Deno.HttpConn;
async function server2() {
const tcpConn = await listener2.accept();
httpConn2 = Deno.serveHttp(tcpConn);
const e = await httpConn2.nextRequest();
assert(e);
await e.respondWith(
new Response(ts.readable, {
headers: { "Content-Type": "text/plain" },
}),
);
listener2.close();
}
async function client() {
const url = `http://${hostname}:${port}/`;
const args = [
"--request",
"GET",
"--url",
url,
"--header",
"Accept-Encoding: gzip, deflate, br",
"--no-buffer",
];
const proc = new Deno.Command("curl", {
args,
stderr: "null",
stdout: "piped",
}).spawn();
const stdout = proc.stdout
.pipeThrough(new DecompressionStream("gzip"))
.pipeThrough(new TextDecoderStream());
let body = "";
for await (const chunk of stdout) {
body += chunk;
if (body === "hello") {
writer.write(encoder.encode(" world"));
writer.close();
}
}
assertEquals(body, "hello world");
const status = await proc.status;
assert(status.success);
}
await Promise.all([server(), server2(), client()]);
httpConn!.close();
httpConn2!.close();
},
});
Deno.test("case insensitive comma value finder", async (t) => {
const cases = /** @type {[string, boolean][]} */ ([
["websocket", true],
["wEbSOcKET", true],
[",wEbSOcKET", true],
[",wEbSOcKET,", true],
[", wEbSOcKET ,", true],
["test, wEbSOcKET ,", true],
["test ,\twEbSOcKET\t\t ,", true],
["test , wEbSOcKET", true],
["test, asdf,web,wEbSOcKET", true],
["test, asdf,web,wEbSOcKETs", false],
["test, asdf,awebsocket,wEbSOcKETs", false],
]);
const findValue = buildCaseInsensitiveCommaValueFinder("websocket");
for (const [input, expected] of cases) {
await t.step(input.toString(), () => {
const actual = findValue(input);
assertEquals(actual, expected);
});
}
});
async function httpServerWithErrorBody(
listener: Deno.Listener,
compression: boolean,
): Promise<Deno.HttpConn> {
const conn = await listener.accept();
listener.close();
const httpConn = Deno.serveHttp(conn);
const e = await httpConn.nextRequest();
assert(e);
const { respondWith } = e;
const originalErr = new Error("boom");
const rs = new ReadableStream({
async start(controller) {
controller.enqueue(new Uint8Array([65]));
await delay(1000);
controller.error(originalErr);
},
});
const init = compression ? { headers: { "content-type": "text/plain" } } : {};
const response = new Response(rs, init);
const err = await assertRejects(() => respondWith(response));
assert(err === originalErr);
return httpConn;
}
for (const compression of [true, false]) {
Deno.test({
name: `http server errors stream if response body errors (http/1.1${
compression ? " + compression" : ""
})`,
permissions: { net: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const listener = Deno.listen({ hostname, port });
const server = httpServerWithErrorBody(listener, compression);
const conn = await Deno.connect({ hostname, port });
const msg = new TextEncoder().encode(
`GET / HTTP/1.1\r\nHost: ${hostname}:${port}\r\n\r\n`,
);
const nwritten = await conn.write(msg);
assertEquals(nwritten, msg.byteLength);
const buf = new Uint8Array(1024);
const nread = await conn.read(buf);
assert(nread);
const data = new TextDecoder().decode(buf.subarray(0, nread));
assert(data.endsWith("1\r\nA\r\n"));
const nread2 = await conn.read(buf); // connection should be closed now because the stream errored
assertEquals(nread2, null);
conn.close();
const httpConn = await server;
httpConn.close();
},
});
Deno.test({
name: `http server errors stream if response body errors (http/1.1 + fetch${
compression ? " + compression" : ""
})`,
permissions: { net: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const listener = Deno.listen({ hostname, port });
const server = httpServerWithErrorBody(listener, compression);
const resp = await fetch(`http://${hostname}:${port}/`);
assert(resp.body);
const reader = resp.body.getReader();
const result = await reader.read();
assert(!result.done);
assertEquals(result.value, new Uint8Array([65]));
const err = await assertRejects(() => reader.read());
assert(err instanceof TypeError);
assert(err.message.includes("unexpected EOF"));
const httpConn = await server;
httpConn.close();
},
});
Deno.test({
name: `http server errors stream if response body errors (http/2 + fetch${
compression ? " + compression" : ""
}))`,
permissions: { net: true, read: true },
async fn() {
const hostname = "localhost";
const port = listenPort;
const listener = Deno.listenTls({
hostname,
port,
cert: await Deno.readTextFile("tests/testdata/tls/localhost.crt"),
key: await Deno.readTextFile("tests/testdata/tls/localhost.key"),
alpnProtocols: ["h2"],
});
const server = httpServerWithErrorBody(listener, compression);
const caCert = Deno.readTextFileSync("tests/testdata/tls/RootCA.pem");
const client = Deno.createHttpClient({ caCerts: [caCert] });
const resp = await fetch(`https://${hostname}:${port}/`, { client });
client.close();
assert(resp.body);
const reader = resp.body.getReader();
const result = await reader.read();
assert(!result.done);
assertEquals(result.value, new Uint8Array([65]));
const err = await assertRejects(() => reader.read());
assert(err instanceof TypeError);
assert(err.message.includes("unexpected internal error encountered"));
const httpConn = await server;
httpConn.close();
},
});
}
Deno.test({
name: "request signal is aborted when response errors",
permissions: { net: true },
async fn() {
let httpConn: Deno.HttpConn;
const promise = (async () => {
const listener = Deno.listen({ port: listenPort });
const conn = await listener.accept();
listener.close();
httpConn = Deno.serveHttp(conn);
const ev = await httpConn.nextRequest();
const { request, respondWith } = ev!;
await delay(300);
await assertRejects(() => respondWith(new Response("Hello World")));
assert(request.signal.aborted);
})();
const abortController = new AbortController();
fetch(`http://127.0.0.1:${listenPort}/`, {
signal: abortController.signal,
}).catch(() => {
// ignore
});
await delay(100);
abortController.abort();
await promise;
httpConn!.close();
},
});
Deno.test(
async function httpConnExplicitResourceManagement() {
let promise;
{
const listen = Deno.listen({ port: listenPort });
promise = fetch(`http://localhost:${listenPort}/`).catch(() => null);
const serverConn = await listen.accept();
listen.close();
using _httpConn = Deno.serveHttp(serverConn);
}
const response = await promise;
assertEquals(response, null);
},
);
Deno.test("proxy with fetch", async () => {
const listener = Deno.listen({ port: listenPort });
const deferred = Promise.withResolvers<void>();
const server = Deno.serve({ port: listenPort + 1 }, (_req) => {
return new Response("Hello world");
});
let httpConn: Deno.HttpConn;
async function handleHttp(conn: Deno.Conn) {
httpConn = Deno.serveHttp(conn);
for await (const e of httpConn) {
await e.respondWith(serve(e.request));
break;
}
}
async function serve(req: Request) {
return await fetch(`http://localhost:${listenPort + 1}/`, req);
}
const originServer = (async () => {
for await (const conn of listener) {
handleHttp(conn);
break;
}
})();
const proxiedRequest = (async () => {
const conn = await Deno.connect({ port: listenPort });
const payload = new TextEncoder().encode(
"POST /api/sessions HTTP/1.1\x0d\x0aConnection: keep-alive\x0d\x0aContent-Length: 2\x0d\x0a\x0d\x0a{}",
);
const n = await conn.write(payload);
assertEquals(n, 76);
const buf = new Uint8Array(1000);
const nread = await conn.read(buf);
assertEquals(nread, 150);
const respText = new TextDecoder().decode(buf);
assert(respText.includes("HTTP/1.1 200 OK"));
assert(respText.includes("content-type: text/plain;charset=UTF-8"));
assert(respText.includes("vary: Accept-Encoding"));
assert(respText.includes("content-length: 11"));
assert(respText.includes("Hello world"));
conn.close();
deferred.resolve();
})();
await proxiedRequest;
await originServer;
await deferred.promise;
await server.shutdown();
await server.finished;
httpConn!.close();
});
function chunkedBodyReader(h: Headers, r: BufReader): Deno.Reader {
// Based on https://tools.ietf.org/html/rfc2616#section-19.4.6
const tp = new TextProtoReader(r);
let finished = false;
const chunks: Array<{
offset: number;
data: Uint8Array;
}> = [];
async function read(buf: Uint8Array): Promise<number | null> {
if (finished) return null;
const [chunk] = chunks;
if (chunk) {
const chunkRemaining = chunk.data.byteLength - chunk.offset;
const readLength = Math.min(chunkRemaining, buf.byteLength);
for (let i = 0; i < readLength; i++) {
buf[i] = chunk.data[chunk.offset + i];
}
chunk.offset += readLength;
if (chunk.offset === chunk.data.byteLength) {
chunks.shift();
// Consume \r\n;
if ((await tp.readLine()) === null) {
throw new Deno.errors.UnexpectedEof();
}
}
return readLength;
}
const line = await tp.readLine();
if (line === null) throw new Deno.errors.UnexpectedEof();
// TODO(bartlomieju): handle chunk extension
const [chunkSizeString] = line.split(";");
const chunkSize = parseInt(chunkSizeString, 16);
if (Number.isNaN(chunkSize) || chunkSize < 0) {
throw new Deno.errors.InvalidData("Invalid chunk size");
}
if (chunkSize > 0) {
if (chunkSize > buf.byteLength) {
let eof = await r.readFull(buf);
if (eof === null) {
throw new Deno.errors.UnexpectedEof();
}
const restChunk = new Uint8Array(chunkSize - buf.byteLength);
eof = await r.readFull(restChunk);
if (eof === null) {
throw new Deno.errors.UnexpectedEof();
} else {
chunks.push({
offset: 0,
data: restChunk,
});
}
return buf.byteLength;
} else {
const bufToFill = buf.subarray(0, chunkSize);
const eof = await r.readFull(bufToFill);
if (eof === null) {
throw new Deno.errors.UnexpectedEof();
}
// Consume \r\n
if ((await tp.readLine()) === null) {
throw new Deno.errors.UnexpectedEof();
}
return chunkSize;
}
} else {
assert(chunkSize === 0);
// Consume \r\n
if ((await r.readLine()) === null) {
throw new Deno.errors.UnexpectedEof();
}
await readTrailers(h, r);
finished = true;
return null;
}
}
return { read };
}
async function readTrailers(
headers: Headers,
r: BufReader,
) {
const trailers = parseTrailer(headers.get("trailer"));
if (trailers == null) return;
const trailerNames = [...trailers.keys()];
const tp = new TextProtoReader(r);
const result = await tp.readMimeHeader();
if (result == null) {
throw new Deno.errors.InvalidData("Missing trailer header.");
}
const undeclared = [...result.keys()].filter(
(k) => !trailerNames.includes(k),
);
if (undeclared.length > 0) {
throw new Deno.errors.InvalidData(
`Undeclared trailers: ${Deno.inspect(undeclared)}.`,
);
}
for (const [k, v] of result) {
headers.append(k, v);
}
const missingTrailers = trailerNames.filter((k) => !result.has(k));
if (missingTrailers.length > 0) {
throw new Deno.errors.InvalidData(
`Missing trailers: ${Deno.inspect(missingTrailers)}.`,
);
}
headers.delete("trailer");
}
function parseTrailer(field: string | null): Headers | undefined {
if (field == null) {
return undefined;
}
const trailerNames = field.split(",").map((v) => v.trim().toLowerCase());
if (trailerNames.length === 0) {
throw new Deno.errors.InvalidData("Empty trailer header.");
}
const prohibited = trailerNames.filter((k) => isProhibitedForTrailer(k));
if (prohibited.length > 0) {
throw new Deno.errors.InvalidData(
`Prohibited trailer names: ${Deno.inspect(prohibited)}.`,
);
}
return new Headers(trailerNames.map((key) => [key, ""]));
}
function isProhibitedForTrailer(key: string): boolean {
const s = new Set(["transfer-encoding", "content-length", "trailer"]);
return s.has(key.toLowerCase());
}