扩展的 CONNECT 协议
RFC 8441 定义了 HTTP/2 的“扩展连接协议”扩展,可用于引导使用 Http2Stream
使用 CONNECT
方法作为其他通信协议(例如 WebSockets)的隧道。
扩展连接协议的使用由 HTTP/2 服务器通过使用 enableConnectProtocol
设置启用:
const http2 = require('node:http2');
const settings = { enableConnectProtocol: true };
const server = http2.createServer({ settings });
一旦客户端从服务器收到指示可以使用扩展 CONNECT 的 SETTINGS
帧,它可能会发送使用 ':protocol'
HTTP/2 伪标头的 CONNECT
请求:
const http2 = require('node:http2');
const client = http2.connect('http://localhost:8080');
client.on('remoteSettings', (settings) => {
if (settings.enableConnectProtocol) {
const req = client.request({ ':method': 'CONNECT', ':protocol': 'foo' });
// ...
}
});
RFC 8441 defines an "Extended CONNECT Protocol" extension to HTTP/2 that
may be used to bootstrap the use of an Http2Stream
using the CONNECT
method as a tunnel for other communication protocols (such as WebSockets).
The use of the Extended CONNECT Protocol is enabled by HTTP/2 servers by using
the enableConnectProtocol
setting:
const http2 = require('node:http2');
const settings = { enableConnectProtocol: true };
const server = http2.createServer({ settings });
Once the client receives the SETTINGS
frame from the server indicating that
the extended CONNECT may be used, it may send CONNECT
requests that use the
':protocol'
HTTP/2 pseudo-header:
const http2 = require('node:http2');
const client = http2.connect('http://localhost:8080');
client.on('remoteSettings', (settings) => {
if (settings.enableConnectProtocol) {
const req = client.request({ ':method': 'CONNECT', ':protocol': 'foo' });
// ...
}
});