93 lines
2.6 KiB
TypeScript
93 lines
2.6 KiB
TypeScript
import { logger } from "@coder/logger"
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import * as express from "express"
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import * as http from "http"
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import nodeFetch, { RequestInit, Response } from "node-fetch"
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import Websocket from "ws"
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import { Disposable } from "../../src/common/emitter"
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import * as util from "../../src/common/util"
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import { ensureAddress } from "../../src/node/app"
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import { disposer } from "../../src/node/http"
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import { handleUpgrade } from "../../src/node/wsRouter"
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// Perhaps an abstraction similar to this should be used in app.ts as well.
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export class HttpServer {
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private hs: http.Server
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public dispose: Disposable["dispose"]
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/**
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* Expects a server and a disposal that cleans up the server (and anything
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* else that may need cleanup).
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*
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* Otherwise a new server is created.
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*/
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public constructor(server?: { server: http.Server; dispose: Disposable["dispose"] }) {
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this.hs = server?.server || http.createServer()
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this.dispose = server?.dispose || disposer(this.hs)
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}
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/**
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* listen starts the server on a random localhost port.
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* Use close to cleanup when done.
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*/
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public listen(fn: http.RequestListener): Promise<void> {
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this.hs.on("request", fn)
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return new Promise((resolve, reject) => {
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this.hs.on("error", reject)
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this.hs.listen(0, "localhost", () => {
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this.hs.off("error", reject)
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resolve()
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this.hs.on("error", (err) => {
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// Promise resolved earlier so this is some other error.
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util.logError(logger, "http server error", err)
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})
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})
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})
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}
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/**
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* Send upgrade requests to an Express app.
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*/
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public listenUpgrade(app: express.Express): void {
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handleUpgrade(app, this.hs)
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}
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/**
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* fetch fetches the request path.
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* The request path must be rooted!
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*/
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public fetch(requestPath: string, opts?: RequestInit): Promise<Response> {
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const address = ensureAddress(this.hs, "http")
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if (typeof address === "string") {
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throw new Error("Cannot fetch socket path")
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}
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address.pathname = requestPath
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return nodeFetch(address.toString(), opts)
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}
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/**
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* Open a websocket against the request path.
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*/
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public ws(requestPath: string): Websocket {
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const address = ensureAddress(this.hs, "ws")
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if (typeof address === "string") {
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throw new Error("Cannot open websocket to socket path")
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}
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address.pathname = requestPath
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return new Websocket(address.toString())
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}
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public port(): number {
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const addr = this.hs.address()
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if (addr && typeof addr === "object") {
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return addr.port
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}
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throw new Error("server not listening or listening on unix socket")
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}
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}
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