superagent
Version:
elegant & feature rich browser / node HTTP with a fluent API
158 lines (157 loc) • 19.1 kB
JavaScript
"use strict";
const http2 = require('http2');
const Stream = require('stream');
const net = require('net');
const tls = require('tls');
const {
HTTP2_HEADER_PATH,
HTTP2_HEADER_STATUS,
HTTP2_HEADER_METHOD,
HTTP2_HEADER_AUTHORITY,
HTTP2_HEADER_HOST,
HTTP2_HEADER_SET_COOKIE,
NGHTTP2_CANCEL
} = http2.constants;
function setProtocol(protocol) {
return {
request(options) {
return new Request(protocol, options);
}
};
}
function normalizeIpv6Host(host) {
return net.isIP(host) === 6 ? `[${host}]` : host;
}
class Request extends Stream {
constructor(protocol, options) {
super();
const defaultPort = protocol === 'https:' ? 443 : 80;
const defaultHost = 'localhost';
const port = options.port || defaultPort;
const host = options.host || defaultHost;
delete options.port;
delete options.host;
this.method = options.method;
this.path = options.path;
this.protocol = protocol;
this.host = host;
delete options.method;
delete options.path;
const sessionOptions = {
...options
};
if (options.socketPath) {
sessionOptions.socketPath = options.socketPath;
sessionOptions.createConnection = this.createUnixConnection.bind(this);
}
this._headers = {};
const normalizedHost = normalizeIpv6Host(host);
const session = http2.connect(`${protocol}//${normalizedHost}:${port}`, sessionOptions);
this.setHeader('host', `${normalizedHost}:${port}`);
session.on('error', error => this.emit('error', error));
this.session = session;
}
createUnixConnection(authority, options) {
switch (this.protocol) {
case 'http:':
return net.connect(options.socketPath);
case 'https:':
options.ALPNProtocols = ['h2'];
options.servername = this.host;
options.allowHalfOpen = true;
return tls.connect(options.socketPath, options);
default:
throw new Error('Unsupported protocol', this.protocol);
}
}
setNoDelay(bool) {
// We can not use setNoDelay with HTTP/2.
// Node 10 limits http2session.socket methods to ones safe to use with HTTP/2.
// See also https://nodejs.org/api/http2.html#http2_http2session_socket
}
getFrame() {
if (this.frame) {
return this.frame;
}
const method = {
[HTTP2_HEADER_PATH]: this.path,
[HTTP2_HEADER_METHOD]: this.method
};
let headers = this.mapToHttp2Header(this._headers);
headers = Object.assign(headers, method);
const frame = this.session.request(headers);
frame.once('response', (headers, flags) => {
headers = this.mapToHttpHeader(headers);
frame.headers = headers;
frame.statusCode = headers[HTTP2_HEADER_STATUS];
frame.status = frame.statusCode;
this.emit('response', frame);
});
this._headerSent = true;
frame.once('drain', () => this.emit('drain'));
frame.on('error', error => this.emit('error', error));
frame.on('close', () => this.session.close());
this.frame = frame;
return frame;
}
mapToHttpHeader(headers) {
const keys = Object.keys(headers);
const http2Headers = {};
for (let key of keys) {
let value = headers[key];
key = key.toLowerCase();
switch (key) {
case HTTP2_HEADER_SET_COOKIE:
value = Array.isArray(value) ? value : [value];
break;
default:
break;
}
http2Headers[key] = value;
}
return http2Headers;
}
mapToHttp2Header(headers) {
const keys = Object.keys(headers);
const http2Headers = {};
for (let key of keys) {
let value = headers[key];
key = key.toLowerCase();
switch (key) {
case HTTP2_HEADER_HOST:
key = HTTP2_HEADER_AUTHORITY;
value = /^http:\/\/|^https:\/\//.test(value) ? new URL(value).host : value;
break;
default:
break;
}
http2Headers[key] = value;
}
return http2Headers;
}
setHeader(name, value) {
this._headers[name.toLowerCase()] = value;
}
getHeader(name) {
return this._headers[name.toLowerCase()];
}
write(data, encoding) {
const frame = this.getFrame();
return frame.write(data, encoding);
}
pipe(stream, options) {
const frame = this.getFrame();
return frame.pipe(stream, options);
}
end(data) {
const frame = this.getFrame();
frame.end(data);
}
abort(data) {
const frame = this.getFrame();
frame.close(NGHTTP2_CANCEL);
this.session.destroy();
}
}
exports.setProtocol = setProtocol;
//# 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http2 = require('http2');\nconst Stream = require('stream');\nconst net = require('net');\nconst tls = require('tls');\n\nconst {\n  HTTP2_HEADER_PATH,\n  HTTP2_HEADER_STATUS,\n  HTTP2_HEADER_METHOD,\n  HTTP2_HEADER_AUTHORITY,\n  HTTP2_HEADER_HOST,\n  HTTP2_HEADER_SET_COOKIE,\n  NGHTTP2_CANCEL\n} = http2.constants;\n\nfunction setProtocol(protocol) {\n  return {\n    request(options) {\n      return new Request(protocol, options);\n    }\n  };\n}\n\nfunction normalizeIpv6Host(host) {\n  return net.isIP(host) === 6 ? `[${host}]` : host;\n}\n\nclass Request extends Stream {\n  constructor(protocol, options) {\n    super();\n    const defaultPort = protocol === 'https:' ? 443 : 80;\n    const defaultHost = 'localhost';\n    const port = options.port || defaultPort;\n    const host = options.host || defaultHost;\n\n    delete options.port;\n    delete options.host;\n\n    this.method = options.method;\n    this.path = options.path;\n    this.protocol = protocol;\n    this.host = host;\n\n    delete options.method;\n    delete options.path;\n\n    const sessionOptions = { ...options };\n    if (options.socketPath) {\n      sessionOptions.socketPath = options.socketPath;\n      sessionOptions.createConnection = this.createUnixConnection.bind(this);\n    }\n\n    this._headers = {};\n\n    const normalizedHost = normalizeIpv6Host(host);\n    const session = http2.connect(\n      `${protocol}//${normalizedHost}:${port}`,\n      sessionOptions\n    );\n    this.setHeader('host', `${normalizedHost}:${port}`);\n\n    session.on('error', (error) => this.emit('error', error));\n\n    this.session = session;\n  }\n\n  createUnixConnection(authority, options) {\n    switch (this.protocol) {\n      case 'http:':\n        return net.connect(options.socketPath);\n      case 'https:':\n        options.ALPNProtocols = ['h2'];\n        options.servername = this.host;\n        options.allowHalfOpen = true;\n        return tls.connect(options.socketPath, options);\n      default:\n        throw new Error('Unsupported protocol', this.protocol);\n    }\n  }\n\n  setNoDelay(bool) {\n    // We can not use setNoDelay with HTTP/2.\n    // Node 10 limits http2session.socket methods to ones safe to use with HTTP/2.\n    // See also https://nodejs.org/api/http2.html#http2_http2session_socket\n  }\n\n  getFrame() {\n    if (this.frame) {\n      return this.frame;\n    }\n\n    const method = {\n      [HTTP2_HEADER_PATH]: this.path,\n      [HTTP2_HEADER_METHOD]: this.method\n    };\n\n    let headers = this.mapToHttp2Header(this._headers);\n\n    headers = Object.assign(headers, method);\n\n    const frame = this.session.request(headers);\n\n    frame.once('response', (headers, flags) => {\n      headers = this.mapToHttpHeader(headers);\n      frame.headers = headers;\n      frame.statusCode = headers[HTTP2_HEADER_STATUS];\n      frame.status = frame.statusCode;\n      this.emit('response', frame);\n    });\n\n    this._headerSent = true;\n\n    frame.once('drain', () => this.emit('drain'));\n    frame.on('error', (error) => this.emit('error', error));\n    frame.on('close', () => this.session.close());\n\n    this.frame = frame;\n    return frame;\n  }\n\n  mapToHttpHeader(headers) {\n    const keys = Object.keys(headers);\n    const http2Headers = {};\n    for (let key of keys) {\n      let value = headers[key];\n      key = key.toLowerCase();\n      switch (key) {\n        case HTTP2_HEADER_SET_COOKIE:\n          value = Array.isArray(value) ? value : [value];\n          break;\n        default:\n          break;\n      }\n\n      http2Headers[key] = value;\n    }\n\n    return http2Headers;\n  }\n\n  mapToHttp2Header(headers) {\n    const keys = Object.keys(headers);\n    const http2Headers = {};\n    for (let key of keys) {\n      let value = headers[key];\n      key = key.toLowerCase();\n      switch (key) {\n        case HTTP2_HEADER_HOST:\n          key = HTTP2_HEADER_AUTHORITY;\n          value = /^http:\\/\\/|^https:\\/\\//.test(value)\n            ? new URL(value).host\n            : value;\n          break;\n        default:\n          break;\n      }\n\n      http2Headers[key] = value;\n    }\n\n    return http2Headers;\n  }\n\n  setHeader(name, value) {\n    this._headers[name.toLowerCase()] = value;\n  }\n\n  getHeader(name) {\n    return this._headers[name.toLowerCase()];\n  }\n\n  write(data, encoding) {\n    const frame = this.getFrame();\n    return frame.write(data, encoding);\n  }\n\n  pipe(stream, options) {\n    const frame = this.getFrame();\n    return frame.pipe(stream, options);\n  }\n\n  end(data) {\n    const frame = this.getFrame();\n    frame.end(data);\n  }\n\n  abort(data) {\n    const frame = this.getFrame();\n    frame.close(NGHTTP2_CANCEL);\n    this.session.destroy();\n  }\n}\n\nexports.setProtocol = 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