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http2: add http fallback options to .createServer
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This adds the Http1IncomingMessage and Http1ServerReponse options
to http2.createServer().

Backport-PR-URL: #20456
PR-URL: #15752
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
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hekike authored and rvagg committed Aug 16, 2018
1 parent 01dc646 commit 3f78847
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10 changes: 10 additions & 0 deletions doc/api/http2.md
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Expand Up @@ -1698,6 +1698,10 @@ changes:
pr-url: https://github.com/nodejs/node/pull/16676
description: Added the `maxHeaderListPairs` option with a default limit of
128 header pairs.
- version: REPLACEME
pr-url: https://github.com/nodejs/node/pull/15752
description: Added the `Http1IncomingMessage` and `Http1ServerResponse`
option.
-->

* `options` {Object}
Expand Down Expand Up @@ -1747,6 +1751,12 @@ changes:
used to determine the padding. See [Using options.selectPadding][].
* `settings` {HTTP/2 Settings Object} The initial settings to send to the
remote peer upon connection.
* `Http1IncomingMessage` {http.IncomingMessage} Specifies the IncomingMessage
class to used for HTTP/1 fallback. Useful for extending the original
`http.IncomingMessage`. **Default:** `http.IncomingMessage`
* `Http1ServerResponse` {http.ServerResponse} Specifies the ServerResponse
class to used for HTTP/1 fallback. Useful for extending the original
`http.ServerResponse`. **Default:** `http.ServerResponse`
* `onRequestHandler` {Function} See [Compatibility API][]
* Returns: {Http2Server}

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15 changes: 14 additions & 1 deletion lib/internal/http2/core.js
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Expand Up @@ -5,6 +5,7 @@
require('internal/util').assertCrypto();

const { async_id_symbol } = process.binding('async_wrap');
const http = require('http');
const binding = process.binding('http2');
const assert = require('assert');
const { Buffer } = require('buffer');
Expand Down Expand Up @@ -67,6 +68,8 @@ const NETServer = net.Server;
const TLSServer = tls.Server;

const kInspect = require('internal/util').customInspectSymbol;
const { kIncomingMessage } = require('_http_common');
const { kServerResponse } = require('_http_server');

const kAlpnProtocol = Symbol('alpnProtocol');
const kAuthority = Symbol('authority');
Expand Down Expand Up @@ -2485,8 +2488,11 @@ function connectionListener(socket) {

if (socket.alpnProtocol === false || socket.alpnProtocol === 'http/1.1') {
// Fallback to HTTP/1.1
if (options.allowHTTP1 === true)
if (options.allowHTTP1 === true) {
socket.server[kIncomingMessage] = options.Http1IncomingMessage;
socket.server[kServerResponse] = options.Http1ServerResponse;
return httpConnectionListener.call(this, socket);
}
// Let event handler deal with the socket
debug(`Unknown protocol from ${socket.remoteAddress}:${socket.remotePort}`);
if (!this.emit('unknownProtocol', socket)) {
Expand Down Expand Up @@ -2526,6 +2532,13 @@ function initializeOptions(options) {
options.allowHalfOpen = true;
assertIsObject(options.settings, 'options.settings');
options.settings = Object.assign({}, options.settings);

// Used only with allowHTTP1
options.Http1IncomingMessage = options.Http1IncomingMessage ||
http.IncomingMessage;
options.Http1ServerResponse = options.Http1ServerResponse ||
http.ServerResponse;

return options;
}

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90 changes: 90 additions & 0 deletions test/parallel/test-http2-https-fallback-http-server-options.js
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@@ -0,0 +1,90 @@
// Flags: --expose-http2
'use strict';

const common = require('../common');
const fixtures = require('../common/fixtures');

if (!common.hasCrypto)
common.skip('missing crypto');

const assert = require('assert');
const url = require('url');
const tls = require('tls');
const http2 = require('http2');
const https = require('https');
const http = require('http');

const key = fixtures.readKey('agent8-key.pem');
const cert = fixtures.readKey('agent8-cert.pem');
const ca = fixtures.readKey('fake-startcom-root-cert.pem');

function onRequest(request, response) {
const { socket: { alpnProtocol } } = request.httpVersion === '2.0' ?
request.stream.session : request;
response.status(200);
response.end(JSON.stringify({
alpnProtocol,
httpVersion: request.httpVersion,
userAgent: request.getUserAgent()
}));
}

class MyIncomingMessage extends http.IncomingMessage {
getUserAgent() {
return this.headers['user-agent'] || 'unknown';
}
}

class MyServerResponse extends http.ServerResponse {
status(code) {
return this.writeHead(code, { 'Content-Type': 'application/json' });
}
}

// HTTP/2 & HTTP/1.1 server
{
const server = http2.createSecureServer(
{
cert,
key, allowHTTP1: true,
Http1IncomingMessage: MyIncomingMessage,
Http1ServerResponse: MyServerResponse
},
common.mustCall(onRequest, 1)
);

server.listen(0);

server.on('listening', common.mustCall(() => {
const { port } = server.address();
const origin = `https://localhost:${port}`;

// HTTP/1.1 client
https.get(
Object.assign(url.parse(origin), {
secureContext: tls.createSecureContext({ ca }),
headers: { 'User-Agent': 'node-test' }
}),
common.mustCall((response) => {
assert.strictEqual(response.statusCode, 200);
assert.strictEqual(response.statusMessage, 'OK');
assert.strictEqual(
response.headers['content-type'],
'application/json'
);

response.setEncoding('utf8');
let raw = '';
response.on('data', (chunk) => { raw += chunk; });
response.on('end', common.mustCall(() => {
const { alpnProtocol, httpVersion, userAgent } = JSON.parse(raw);
assert.strictEqual(alpnProtocol, false);
assert.strictEqual(httpVersion, '1.1');
assert.strictEqual(userAgent, 'node-test');

server.close();
}));
})
);
}));
}

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