49 lines
1.4 KiB
Plaintext
49 lines
1.4 KiB
Plaintext
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---
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title: Common HTTP server usage
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sidebarTitle: HTTP Server with Bun
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mode: center
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---
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This code starts an HTTP server listening on port `3000`. It demonstrates basic routing with common responses and handles POST data from standard forms or as JSON.
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See [`Bun.serve`](/runtime/http/server) for details.
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```ts server.ts icon="/icons/typescript.svg"
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const server = Bun.serve({
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async fetch(req) {
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const path = new URL(req.url).pathname;
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// respond with text/plain
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if (path === "/") return new Response("Welcome to Bun!");
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// redirect
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if (path === "/abc") return Response.redirect("/source", 301);
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// send back a file (in this case, *this* file)
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if (path === "/source") return new Response(Bun.file(import.meta.path));
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// respond with JSON
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if (path === "/api") return Response.json({ some: "buns", for: "you" });
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// receive JSON data to a POST request
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if (req.method === "POST" && path === "/api/post") {
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const data = await req.json();
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console.log("Received JSON:", data);
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return Response.json({ success: true, data });
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}
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// receive POST data from a form
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if (req.method === "POST" && path === "/form") {
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const data = await req.formData();
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console.log(data.get("someField"));
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return new Response("Success");
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}
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// 404s
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return new Response("Page not found", { status: 404 });
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},
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});
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console.log(`Listening on ${server.url}`);
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```
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