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denoland-deno/core/examples/http_bench_json_ops.js
Aaron O'Mullan 375ce63c63
feat(core): streams (#12596)
This allows resources to be "streams" by implementing read/write/shutdown. These streams are implicit since their nature (read/write/duplex) isn't known until called, but we could easily add another method to explicitly tag resources as streams.

`op_read/op_write/op_shutdown` are now builtin ops provided by `deno_core`

Note: this current implementation is simple & straightforward but it results in an additional alloc per read/write call

Closes #12556
2021-11-09 19:26:17 +01:00

49 lines
1.2 KiB
JavaScript

// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
// This is not a real HTTP server. We read blindly one time into 'requestBuf',
// then write this fixed 'responseBuf'. The point of this benchmark is to
// exercise the event loop in a simple yet semi-realistic way.
const requestBuf = new Uint8Array(64 * 1024);
const responseBuf = new Uint8Array(
"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World\n"
.split("")
.map((c) => c.charCodeAt(0)),
);
/** Listens on 0.0.0.0:4500, returns rid. */
function listen() {
return Deno.core.opSync("listen");
}
/** Accepts a connection, returns rid. */
function accept(serverRid) {
return Deno.core.opAsync("accept", serverRid);
}
async function serve(rid) {
try {
while (true) {
await Deno.core.read(rid, requestBuf);
await Deno.core.write(rid, responseBuf);
}
} catch (e) {
if (
!e.message.includes("Broken pipe") &&
!e.message.includes("Connection reset by peer")
) {
throw e;
}
}
Deno.core.close(rid);
}
async function main() {
const listenerRid = listen();
Deno.core.print(`http_bench_ops listening on http://127.0.0.1:4544/\n`);
while (true) {
const rid = await accept(listenerRid);
serve(rid);
}
}
main();