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import { createServer as createServerHTTP } from "http";
// src/listener.ts
import { Http2ServerRequest as Http2ServerRequest2, constants as h2constants } from "http2";
// src/request.ts
import { Http2ServerRequest } from "http2";
import { Readable } from "stream";
var RequestError = class extends Error {
constructor(message, options) {
super(message, options);
this.name = "RequestError";
}
};
var toRequestError = (e) => {
if (e instanceof RequestError) {
return e;
}
return new RequestError(e.message, { cause: e });
};
var GlobalRequest = global.Request;
var Request = class extends GlobalRequest {
constructor(input, options) {
if (typeof input === "object" && getRequestCache in input) {
input = input[getRequestCache]();
}
if (typeof options?.body?.getReader !== "undefined") {
;
options.duplex ??= "half";
}
super(input, options);
}
};
var newHeadersFromIncoming = (incoming) => {
const headerRecord = [];
const rawHeaders = incoming.rawHeaders;
for (let i = 0; i < rawHeaders.length; i += 2) {
const { [i]: key, [i + 1]: value } = rawHeaders;
if (key.charCodeAt(0) !== /*:*/
58) {
headerRecord.push([key, value]);
}
}
return new Headers(headerRecord);
};
var wrapBodyStream = Symbol("wrapBodyStream");
var newRequestFromIncoming = (method, url, headers, incoming, abortController) => {
const init = {
method,
headers,
signal: abortController.signal
};
if (method === "TRACE") {
init.method = "GET";
const req = new Request(url, init);
Object.defineProperty(req, "method", {
get() {
return "TRACE";
}
});
return req;
}
if (!(method === "GET" || method === "HEAD")) {
if ("rawBody" in incoming && incoming.rawBody instanceof Buffer) {
init.body = new ReadableStream({
start(controller) {
controller.enqueue(incoming.rawBody);
controller.close();
}
});
} else if (incoming[wrapBodyStream]) {
let reader;
init.body = new ReadableStream({
async pull(controller) {
try {
reader ||= Readable.toWeb(incoming).getReader();
const { done, value } = await reader.read();
if (done) {
controller.close();
} else {
controller.enqueue(value);
}
} catch (error) {
controller.error(error);
}
}
});
} else {
init.body = Readable.toWeb(incoming);
}
}
return new Request(url, init);
};
var getRequestCache = Symbol("getRequestCache");
var requestCache = Symbol("requestCache");
var incomingKey = Symbol("incomingKey");
var urlKey = Symbol("urlKey");
var headersKey = Symbol("headersKey");
var abortControllerKey = Symbol("abortControllerKey");
var getAbortController = Symbol("getAbortController");
var requestPrototype = {
get method() {
return this[incomingKey].method || "GET";
},
get url() {
return this[urlKey];
},
get headers() {
return this[headersKey] ||= newHeadersFromIncoming(this[incomingKey]);
},
[getAbortController]() {
this[getRequestCache]();
return this[abortControllerKey];
},
[getRequestCache]() {
this[abortControllerKey] ||= new AbortController();
return this[requestCache] ||= newRequestFromIncoming(
this.method,
this[urlKey],
this.headers,
this[incomingKey],
this[abortControllerKey]
);
}
};
[
"body",
"bodyUsed",
"cache",
"credentials",
"destination",
"integrity",
"mode",
"redirect",
"referrer",
"referrerPolicy",
"signal",
"keepalive"
].forEach((k) => {
Object.defineProperty(requestPrototype, k, {
get() {
return this[getRequestCache]()[k];
}
});
});
["arrayBuffer", "blob", "clone", "formData", "json", "text"].forEach((k) => {
Object.defineProperty(requestPrototype, k, {
value: function() {
return this[getRequestCache]()[k]();
}
});
});
Object.defineProperty(requestPrototype, Symbol.for("nodejs.util.inspect.custom"), {
value: function(depth, options, inspectFn) {
const props = {
method: this.method,
url: this.url,
headers: this.headers,
nativeRequest: this[requestCache]
};
return `Request (lightweight) ${inspectFn(props, { ...options, depth: depth == null ? null : depth - 1 })}`;
}
});
Object.setPrototypeOf(requestPrototype, Request.prototype);
var newRequest = (incoming, defaultHostname) => {
const req = Object.create(requestPrototype);
req[incomingKey] = incoming;
const incomingUrl = incoming.url || "";
if (incomingUrl[0] !== "/" && // short-circuit for performance. most requests are relative URL.
(incomingUrl.startsWith("http://") || incomingUrl.startsWith("https://"))) {
if (incoming instanceof Http2ServerRequest) {
throw new RequestError("Absolute URL for :path is not allowed in HTTP/2");
}
try {
const url2 = new URL(incomingUrl);
req[urlKey] = url2.href;
} catch (e) {
throw new RequestError("Invalid absolute URL", { cause: e });
}
return req;
}
const host = (incoming instanceof Http2ServerRequest ? incoming.authority : incoming.headers.host) || defaultHostname;
if (!host) {
throw new RequestError("Missing host header");
}
let scheme;
if (incoming instanceof Http2ServerRequest) {
scheme = incoming.scheme;
if (!(scheme === "http" || scheme === "https")) {
throw new RequestError("Unsupported scheme");
}
} else {
scheme = incoming.socket && incoming.socket.encrypted ? "https" : "http";
}
const url = new URL(`${scheme}://${host}${incomingUrl}`);
if (url.hostname.length !== host.length && url.hostname !== host.replace(/:\d+$/, "")) {
throw new RequestError("Invalid host header");
}
req[urlKey] = url.href;
return req;
};
// src/response.ts
var responseCache = Symbol("responseCache");
var getResponseCache = Symbol("getResponseCache");
var cacheKey = Symbol("cache");
var GlobalResponse = global.Response;
var Response2 = class _Response {
#body;
#init;
[getResponseCache]() {
delete this[cacheKey];
return this[responseCache] ||= new GlobalResponse(this.#body, this.#init);
}
constructor(body, init) {
let headers;
this.#body = body;
if (init instanceof _Response) {
const cachedGlobalResponse = init[responseCache];
if (cachedGlobalResponse) {
this.#init = cachedGlobalResponse;
this[getResponseCache]();
return;
} else {
this.#init = init.#init;
headers = new Headers(init.#init.headers);
}
} else {
this.#init = init;
}
if (typeof body === "string" || typeof body?.getReader !== "undefined" || body instanceof Blob || body instanceof Uint8Array) {
;
this[cacheKey] = [init?.status || 200, body, headers || init?.headers];
}
}
get headers() {
const cache = this[cacheKey];
if (cache) {
if (!(cache[2] instanceof Headers)) {
cache[2] = new Headers(
cache[2] || { "content-type": "text/plain; charset=UTF-8" }
);
}
return cache[2];
}
return this[getResponseCache]().headers;
}
get status() {
return this[cacheKey]?.[0] ?? this[getResponseCache]().status;
}
get ok() {
const status = this.status;
return status >= 200 && status < 300;
}
};
["body", "bodyUsed", "redirected", "statusText", "trailers", "type", "url"].forEach((k) => {
Object.defineProperty(Response2.prototype, k, {
get() {
return this[getResponseCache]()[k];
}
});
});
["arrayBuffer", "blob", "clone", "formData", "json", "text"].forEach((k) => {
Object.defineProperty(Response2.prototype, k, {
value: function() {
return this[getResponseCache]()[k]();
}
});
});
Object.defineProperty(Response2.prototype, Symbol.for("nodejs.util.inspect.custom"), {
value: function(depth, options, inspectFn) {
const props = {
status: this.status,
headers: this.headers,
ok: this.ok,
nativeResponse: this[responseCache]
};
return `Response (lightweight) ${inspectFn(props, { ...options, depth: depth == null ? null : depth - 1 })}`;
}
});
Object.setPrototypeOf(Response2, GlobalResponse);
Object.setPrototypeOf(Response2.prototype, GlobalResponse.prototype);
// src/utils.ts
async function readWithoutBlocking(readPromise) {
return Promise.race([readPromise, Promise.resolve().then(() => Promise.resolve(void 0))]);
}
function writeFromReadableStreamDefaultReader(reader, writable, currentReadPromise) {
const cancel = (error) => {
reader.cancel(error).catch(() => {
});
};
writable.on("close", cancel);
writable.on("error", cancel);
(currentReadPromise ?? reader.read()).then(flow, handleStreamError);
return reader.closed.finally(() => {
writable.off("close", cancel);
writable.off("error", cancel);
});
function handleStreamError(error) {
if (error) {
writable.destroy(error);
}
}
function onDrain() {
reader.read().then(flow, handleStreamError);
}
function flow({ done, value }) {
try {
if (done) {
writable.end();
} else if (!writable.write(value)) {
writable.once("drain", onDrain);
} else {
return reader.read().then(flow, handleStreamError);
}
} catch (e) {
handleStreamError(e);
}
}
}
function writeFromReadableStream(stream, writable) {
if (stream.locked) {
throw new TypeError("ReadableStream is locked.");
} else if (writable.destroyed) {
return;
}
return writeFromReadableStreamDefaultReader(stream.getReader(), writable);
}
var buildOutgoingHttpHeaders = (headers) => {
const res = {};
if (!(headers instanceof Headers)) {
headers = new Headers(headers ?? void 0);
}
const cookies = [];
for (const [k, v] of headers) {
if (k === "set-cookie") {
cookies.push(v);
} else {
res[k] = v;
}
}
if (cookies.length > 0) {
res["set-cookie"] = cookies;
}
res["content-type"] ??= "text/plain; charset=UTF-8";
return res;
};
// src/utils/response/constants.ts
var X_ALREADY_SENT = "x-hono-already-sent";
// src/globals.ts
import crypto from "crypto";
if (typeof global.crypto === "undefined") {
global.crypto = crypto;
}
// src/listener.ts
var outgoingEnded = Symbol("outgoingEnded");
var incomingDraining = Symbol("incomingDraining");
var DRAIN_TIMEOUT_MS = 500;
var MAX_DRAIN_BYTES = 64 * 1024 * 1024;
var drainIncoming = (incoming) => {
const incomingWithDrainState = incoming;
if (incoming.destroyed || incomingWithDrainState[incomingDraining]) {
return;
}
incomingWithDrainState[incomingDraining] = true;
if (incoming instanceof Http2ServerRequest2) {
try {
;
incoming.stream?.close?.(h2constants.NGHTTP2_NO_ERROR);
} catch {
}
return;
}
let bytesRead = 0;
const cleanup = () => {
clearTimeout(timer);
incoming.off("data", onData);
incoming.off("end", cleanup);
incoming.off("error", cleanup);
};
const forceClose = () => {
cleanup();
const socket = incoming.socket;
if (socket && !socket.destroyed) {
socket.destroySoon();
}
};
const timer = setTimeout(forceClose, DRAIN_TIMEOUT_MS);
timer.unref?.();
const onData = (chunk) => {
bytesRead += chunk.length;
if (bytesRead > MAX_DRAIN_BYTES) {
forceClose();
}
};
incoming.on("data", onData);
incoming.on("end", cleanup);
incoming.on("error", cleanup);
incoming.resume();
};
var handleRequestError = () => new Response(null, {
status: 400
});
var handleFetchError = (e) => new Response(null, {
status: e instanceof Error && (e.name === "TimeoutError" || e.constructor.name === "TimeoutError") ? 504 : 500
});
var handleResponseError = (e, outgoing) => {
const err = e instanceof Error ? e : new Error("unknown error", { cause: e });
if (err.code === "ERR_STREAM_PREMATURE_CLOSE") {
console.info("The user aborted a request.");
} else {
console.error(e);
if (!outgoing.headersSent) {
outgoing.writeHead(500, { "Content-Type": "text/plain" });
}
outgoing.end(`Error: ${err.message}`);
outgoing.destroy(err);
}
};
var flushHeaders = (outgoing) => {
if ("flushHeaders" in outgoing && outgoing.writable) {
outgoing.flushHeaders();
}
};
var responseViaCache = async (res, outgoing) => {
let [status, body, header] = res[cacheKey];
let hasContentLength = false;
if (!header) {
header = { "content-type": "text/plain; charset=UTF-8" };
} else if (header instanceof Headers) {
hasContentLength = header.has("content-length");
header = buildOutgoingHttpHeaders(header);
} else if (Array.isArray(header)) {
const headerObj = new Headers(header);
hasContentLength = headerObj.has("content-length");
header = buildOutgoingHttpHeaders(headerObj);
} else {
for (const key in header) {
if (key.length === 14 && key.toLowerCase() === "content-length") {
hasContentLength = true;
break;
}
}
}
if (!hasContentLength) {
if (typeof body === "string") {
header["Content-Length"] = Buffer.byteLength(body);
} else if (body instanceof Uint8Array) {
header["Content-Length"] = body.byteLength;
} else if (body instanceof Blob) {
header["Content-Length"] = body.size;
}
}
outgoing.writeHead(status, header);
if (typeof body === "string" || body instanceof Uint8Array) {
outgoing.end(body);
} else if (body instanceof Blob) {
outgoing.end(new Uint8Array(await body.arrayBuffer()));
} else {
flushHeaders(outgoing);
await writeFromReadableStream(body, outgoing)?.catch(
(e) => handleResponseError(e, outgoing)
);
}
;
outgoing[outgoingEnded]?.();
};
var isPromise = (res) => typeof res.then === "function";
var responseViaResponseObject = async (res, outgoing, options = {}) => {
if (isPromise(res)) {
if (options.errorHandler) {
try {
res = await res;
} catch (err) {
const errRes = await options.errorHandler(err);
if (!errRes) {
return;
}
res = errRes;
}
} else {
res = await res.catch(handleFetchError);
}
}
if (cacheKey in res) {
return responseViaCache(res, outgoing);
}
const resHeaderRecord = buildOutgoingHttpHeaders(res.headers);
if (res.body) {
const reader = res.body.getReader();
const values = [];
let done = false;
let currentReadPromise = void 0;
if (resHeaderRecord["transfer-encoding"] !== "chunked") {
let maxReadCount = 2;
for (let i = 0; i < maxReadCount; i++) {
currentReadPromise ||= reader.read();
const chunk = await readWithoutBlocking(currentReadPromise).catch((e) => {
console.error(e);
done = true;
});
if (!chunk) {
if (i === 1) {
await new Promise((resolve) => setTimeout(resolve));
maxReadCount = 3;
continue;
}
break;
}
currentReadPromise = void 0;
if (chunk.value) {
values.push(chunk.value);
}
if (chunk.done) {
done = true;
break;
}
}
if (done && !("content-length" in resHeaderRecord)) {
resHeaderRecord["content-length"] = values.reduce((acc, value) => acc + value.length, 0);
}
}
outgoing.writeHead(res.status, resHeaderRecord);
values.forEach((value) => {
;
outgoing.write(value);
});
if (done) {
outgoing.end();
} else {
if (values.length === 0) {
flushHeaders(outgoing);
}
await writeFromReadableStreamDefaultReader(reader, outgoing, currentReadPromise);
}
} else if (resHeaderRecord[X_ALREADY_SENT]) {
} else {
outgoing.writeHead(res.status, resHeaderRecord);
outgoing.end();
}
;
outgoing[outgoingEnded]?.();
};
var getRequestListener = (fetchCallback, options = {}) => {
const autoCleanupIncoming = options.autoCleanupIncoming ?? true;
if (options.overrideGlobalObjects !== false && global.Request !== Request) {
Object.defineProperty(global, "Request", {
value: Request
});
Object.defineProperty(global, "Response", {
value: Response2
});
}
return async (incoming, outgoing) => {
let res, req;
try {
req = newRequest(incoming, options.hostname);
let incomingEnded = !autoCleanupIncoming || incoming.method === "GET" || incoming.method === "HEAD";
if (!incomingEnded) {
;
incoming[wrapBodyStream] = true;
incoming.on("end", () => {
incomingEnded = true;
});
if (incoming instanceof Http2ServerRequest2) {
;
outgoing[outgoingEnded] = () => {
if (!incomingEnded) {
setTimeout(() => {
if (!incomingEnded) {
setTimeout(() => {
drainIncoming(incoming);
});
}
});
}
};
}
outgoing.on("finish", () => {
if (!incomingEnded) {
drainIncoming(incoming);
}
});
}
outgoing.on("close", () => {
const abortController = req[abortControllerKey];
if (abortController) {
if (incoming.errored) {
req[abortControllerKey].abort(incoming.errored.toString());
} else if (!outgoing.writableFinished) {
req[abortControllerKey].abort("Client connection prematurely closed.");
}
}
if (!incomingEnded) {
setTimeout(() => {
if (!incomingEnded) {
setTimeout(() => {
drainIncoming(incoming);
});
}
});
}
});
res = fetchCallback(req, { incoming, outgoing });
if (cacheKey in res) {
return responseViaCache(res, outgoing);
}
} catch (e) {
if (!res) {
if (options.errorHandler) {
res = await options.errorHandler(req ? e : toRequestError(e));
if (!res) {
return;
}
} else if (!req) {
res = handleRequestError();
} else {
res = handleFetchError(e);
}
} else {
return handleResponseError(e, outgoing);
}
}
try {
return await responseViaResponseObject(res, outgoing, options);
} catch (e) {
return handleResponseError(e, outgoing);
}
};
};
// src/server.ts
var createAdaptorServer = (options) => {
const fetchCallback = options.fetch;
const requestListener = getRequestListener(fetchCallback, {
hostname: options.hostname,
overrideGlobalObjects: options.overrideGlobalObjects,
autoCleanupIncoming: options.autoCleanupIncoming
});
const createServer = options.createServer || createServerHTTP;
const server = createServer(options.serverOptions || {}, requestListener);
return server;
};
var serve = (options, listeningListener) => {
const server = createAdaptorServer(options);
server.listen(options?.port ?? 3e3, options.hostname, () => {
const serverInfo = server.address();
listeningListener && listeningListener(serverInfo);
});
return server;
};
export {
createAdaptorServer,
serve
};
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