{"version":3,"file":"http-proxy.mjs","names":[],"sources":["../src/http-proxy.ts"],"sourcesContent":["/* -------------------------------------------------------------------\n\n ⚡ Storm Software - Stryke\n\n This code was released as part of the Stryke project. Stryke\n is maintained by Storm Software under the Apache-2.0 license, and is\n free for commercial and private use. For more information, please visit\n our licensing page at https://stormsoftware.com/licenses/projects/stryke.\n\n Website: https://stormsoftware.com\n Repository: https://github.com/storm-software/stryke\n Documentation: https://docs.stormsoftware.com/projects/stryke\n Contact: https://stormsoftware.com/contact\n\n SPDX-License-Identifier: Apache-2.0\n\n ------------------------------------------------------------------- */\n\nimport type { AgentConnectOpts } from \"agent-base\";\nimport { Buffer } from \"node:buffer\";\nimport { once } from \"node:events\";\nimport type {\n AgentOptions,\n ClientRequest,\n OutgoingHttpHeaders\n} from \"node:http\";\nimport * as net from \"node:net\";\nimport * as tls from \"node:tls\";\nimport { URL } from \"node:url\";\nimport { Agent } from \"./agent\";\n\ntype Protocol = T extends `${infer Protocol}:${infer _}` ? Protocol : never;\n\ninterface ConnectOptsMap {\n http: Omit;\n https: Omit;\n}\n\ntype ConnectOpts = {\n [P in keyof ConnectOptsMap]: Protocol extends P\n ? ConnectOptsMap[P]\n : never;\n}[keyof ConnectOptsMap];\n\nexport type HttpProxyAgentOptions = ConnectOpts &\n AgentOptions & {\n headers?: OutgoingHttpHeaders | (() => OutgoingHttpHeaders);\n };\n\ninterface HttpProxyAgentClientRequest extends ClientRequest {\n outputData?: {\n data: string;\n }[];\n _header?: string | null;\n _implicitHeader: () => void;\n}\n\n/**\n * The `HttpProxyAgent` implements an HTTP Agent subclass that connects to the specified \"HTTP proxy server\" in order to proxy HTTP requests.\n */\nexport class HttpProxyAgent extends Agent {\n static protocols = [\"http\", \"https\"] as const;\n\n readonly proxy: URL;\n\n proxyHeaders: OutgoingHttpHeaders | (() => OutgoingHttpHeaders);\n\n connectOpts: net.TcpNetConnectOpts & tls.ConnectionOptions;\n\n constructor(proxy: Uri | URL, opts?: HttpProxyAgentOptions) {\n super(opts);\n this.proxy = typeof proxy === \"string\" ? new URL(proxy) : proxy;\n this.proxyHeaders = opts?.headers ?? {};\n\n // Trim off the brackets from IPv6 addresses\n const host = (this.proxy.hostname || this.proxy.host).replace(\n /^\\[|\\]$/g,\n \"\"\n );\n const port = this.proxy.port\n ? Number.parseInt(this.proxy.port, 10)\n : this.proxy.protocol === \"https:\"\n ? 443\n : 80;\n this.connectOpts = {\n ...(opts ? omit(opts, \"headers\") : null),\n host,\n port\n };\n }\n\n addRequest(req: HttpProxyAgentClientRequest, opts: AgentConnectOpts): void {\n req._header = null;\n this.setRequestProps(req, opts);\n\n // @ts-expect-error `addRequest()` isn't defined in `@types/node`\n // eslint-disable-next-line ts/no-unsafe-call\n super.addRequest(req, opts);\n }\n\n setRequestProps(\n req: HttpProxyAgentClientRequest,\n opts: AgentConnectOpts\n ): void {\n const { proxy } = this;\n const protocol = opts.secureEndpoint ? \"https:\" : \"http:\";\n const hostname = req.getHeader(\"host\") || \"localhost\";\n const base = `${protocol}//${Array.isArray(hostname) ? hostname.join(\"\") : hostname}`;\n const url = new URL(req.path, base);\n if (opts.port !== 80) {\n url.port = String(opts.port);\n }\n\n // Change the `http.ClientRequest` instance's \"path\" field\n // to the absolute path of the URL that will be requested.\n req.path = String(url);\n\n // Inject the `Proxy-Authorization` header if necessary.\n\n const headers: OutgoingHttpHeaders =\n typeof this.proxyHeaders === \"function\"\n ? this.proxyHeaders()\n : { ...this.proxyHeaders };\n if (proxy.username || proxy.password) {\n const auth = `${decodeURIComponent(\n proxy.username\n )}:${decodeURIComponent(proxy.password)}`;\n headers[\"Proxy-Authorization\"] = `Basic ${Buffer.from(auth).toString(\n \"base64\"\n )}`;\n }\n\n if (!headers[\"Proxy-Connection\"]) {\n headers[\"Proxy-Connection\"] = this.keepAlive ? \"Keep-Alive\" : \"close\";\n }\n for (const name of Object.keys(headers)) {\n const value = headers[name];\n if (value) {\n req.setHeader(name, value);\n }\n }\n }\n\n async connect(\n req: HttpProxyAgentClientRequest,\n opts: AgentConnectOpts\n ): Promise {\n req._header = null;\n\n if (!req.path.includes(\"://\")) {\n this.setRequestProps(req, opts);\n }\n\n // At this point, the http ClientRequest's internal `_header` field\n // might have already been set. If this is the case then we'll need\n // to re-generate the string since we just changed the `req.path`.\n let first: string;\n let endOfHeaders: number;\n\n req._implicitHeader();\n if (req.outputData && req.outputData.length > 0) {\n first = req.outputData[0]!.data;\n endOfHeaders = first.indexOf(\"\\r\\n\\r\\n\") + 4;\n req.outputData[0]!.data = req._header + first.substring(endOfHeaders);\n }\n\n // Create a socket connection to the proxy server.\n let socket: net.Socket;\n if (this.proxy.protocol === \"https:\") {\n socket = tls.connect(this.connectOpts);\n } else {\n socket = net.connect(this.connectOpts);\n }\n\n // Wait for the socket's `connect` event, so that this `callback()`\n // function throws instead of the `http` request machinery. 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