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import type { Hono } from "hono"
import { createBunWebSocket } from "hono/bun"
import type { Adapter, FetchApp, Opts } from "./adapter"
function listen(app: FetchApp, opts: Opts, websocket?: ReturnType<typeof createBunWebSocket>["websocket"]) {
const start = (port: number) => {
try {
if (websocket) {
return Bun.serve({ fetch: app.fetch, hostname: opts.hostname, idleTimeout: 0, websocket, port })
}
return Bun.serve({ fetch: app.fetch, hostname: opts.hostname, idleTimeout: 0, port })
} catch {
return
}
}
const server = opts.port === 0 ? (start(4096) ?? start(0)) : start(opts.port)
if (!server) {
throw new Error(`Failed to start server on port ${opts.port}`)
}
if (!server.port) {
throw new Error(`Failed to resolve server address for port ${opts.port}`)
}
return {
port: server.port,
stop(close?: boolean) {
return Promise.resolve(server.stop(close))
},
}
}
export const adapter: Adapter = {
create(app: Hono) {
const ws = createBunWebSocket()
return {
upgradeWebSocket: ws.upgradeWebSocket,
listen: (opts) => Promise.resolve(listen(app, opts, ws.websocket)),
}
},
createFetch(app) {
return {
listen: (opts) => Promise.resolve(listen(app, opts)),
}
},
}
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