From e71e71b5138c3dfee080f4215dd957dc7a6cbdaf Mon Sep 17 00:00:00 2001 From: James M Snell Date: Mon, 17 Jul 2017 10:17:16 -0700 Subject: http2: introducing HTTP/2 At long last: The initial *experimental* implementation of HTTP/2. This is an accumulation of the work that has been done in the nodejs/http2 repository, squashed down to a couple of commits. The original commit history has been preserved in the nodejs/http2 repository. This PR introduces the nghttp2 C library as a new dependency. This library provides the majority of the HTTP/2 protocol implementation, with the rest of the code here providing the mapping of the library into a usable JS API. Within src, a handful of new node_http2_*.c and node_http2_*.h files are introduced. These provide the internal mechanisms that interface with nghttp and define the `process.binding('http2')` interface. The JS API is defined within `internal/http2/*.js`. There are two APIs provided: Core and Compat. The Core API is HTTP/2 specific and is designed to be as minimal and as efficient as possible. The Compat API is intended to be as close to the existing HTTP/1 API as possible, with some exceptions. Tests, documentation and initial benchmarks are included. The `http2` module is gated by a new `--expose-http2` command line flag. When used, `require('http2')` will be exposed to users. Note that there is an existing `http2` module on npm that would be impacted by the introduction of this module, which is the main reason for gating this behind a flag. When using `require('http2')` the first time, a process warning will be emitted indicating that an experimental feature is being used. To run the benchmarks, the `h2load` tool (part of the nghttp project) is required: `./node benchmarks/http2/simple.js benchmarker=h2load`. Only two benchmarks are currently available. Additional configuration options to enable verbose debugging are provided: ``` $ ./configure --debug-http2 --debug-nghttp2 $ NODE_DEBUG=http2 ./node ``` The `--debug-http2` configuration option enables verbose debug statements from the `src/node_http2_*` files. The `--debug-nghttp2` enables the nghttp library's own verbose debug output. The `NODE_DEBUG=http2` enables JS-level debug output. The following illustrates as simple HTTP/2 server and client interaction: (The HTTP/2 client and server support both plain text and TLS connections) ```jt client = http2.connect('http://localhost:80'); const req = client.request({ ':path': '/some/path' }); req.on('data', (chunk) => { /* do something with the data */ }); req.on('end', () => { client.destroy(); }); // Plain text (non-TLS server) const server = http2.createServer(); server.on('stream', (stream, requestHeaders) => { stream.respond({ ':status': 200 }); stream.write('hello '); stream.end('world'); }); server.listen(80); ``` ```js const http2 = require('http2'); const client = http2.connect('http://localhost'); ``` Author: Anna Henningsen Author: Colin Ihrig Author: Daniel Bevenius Author: James M Snell Author: Jun Mukai Author: Kelvin Jin Author: Matteo Collina Author: Robert Kowalski Author: Santiago Gimeno Author: Sebastiaan Deckers Author: Yosuke Furukawa PR-URL: https://github.com/nodejs/node/pull/14239 Reviewed-By: Anna Henningsen Reviewed-By: Colin Ihrig Reviewed-By: Matteo Collina --- src/node_internals.h | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/node_internals.h') diff --git a/src/node_internals.h b/src/node_internals.h index d6bdf9b5ba..5d437fa302 100644 --- a/src/node_internals.h +++ b/src/node_internals.h @@ -83,6 +83,9 @@ extern std::string openssl_config; // that is used by lib/module.js extern bool config_preserve_symlinks; +// Set in node.cc by ParseArgs when --expose-http2 is used. +extern bool config_expose_http2; + // Set in node.cc by ParseArgs when --expose-internals or --expose_internals is // used. // Used in node_config.cc to set a constant on process.binding('config') -- cgit v1.2.3