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denoland-deno/cli/bench/deno_tcp_proxy.ts

33 lines
941 B
TypeScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
// Used for benchmarking Deno's tcp proxy performance.
const addr = Deno.args[0] || "127.0.0.1:4500";
const originAddr = Deno.args[1] || "127.0.0.1:4501";
const [hostname, port] = addr.split(":");
const [originHostname, originPort] = originAddr.split(":");
const listener = Deno.listen({ hostname, port: Number(port) });
async function handle(conn: Deno.Conn): Promise<void> {
const origin = await Deno.connect({
hostname: originHostname,
port: Number(originPort),
});
try {
await Promise.all([Deno.copy(conn, origin), Deno.copy(origin, conn)]);
} catch (e) {
if (
!(e instanceof Deno.errors.BrokenPipe) &&
!(e instanceof Deno.errors.ConnectionReset)
) {
throw e;
}
}
conn.close();
origin.close();
}
console.log(`Proxy listening on http://${addr}/`);
for await (const conn of listener) {
handle(conn);
}