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// 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)),
);
// This buffer exists purely to avoid trigerring the bin-op buf assert
// in practice all deno bin ops accept buffers, this bench is an exception
// TODO(@AaronO): remove once we drop variadic BufVec compat
const nopBuffer = new Uint8Array();
/** Listens on 0.0.0.0:4500, returns rid. */
function listen() {
return Deno.core.binOpSync("listen", 0, nopBuffer);
}
/** Accepts a connection, returns rid. */
function accept(rid) {
return Deno.core.binOpAsync("accept", rid, nopBuffer);
}
/**
* Reads a packet from the rid, presumably an http request. data is ignored.
* Returns bytes read.
*/
function read(rid, data) {
return Deno.core.binOpAsync("read", rid, data);
}
/** Writes a fixed HTTP response to the socket rid. Returns bytes written. */
function write(rid, data) {
return Deno.core.binOpAsync("write", rid, data);
}
function close(rid) {
Deno.core.binOpSync("close", rid, nopBuffer);
}
async function serve(rid) {
while (true) {
const nread = await read(rid, requestBuf);
if (nread <= 0) {
break;
}
const nwritten = await write(rid, responseBuf);
if (nwritten < 0) {
break;
}
}
close(rid);
}
async function main() {
Deno.core.ops();
Deno.core.registerErrorClass("Error", Error);
const listenerRid = listen();
Deno.core.print(
`http_bench_bin_ops listening on http://127.0.0.1:4544/\n`,
);
for (;;) {
const rid = await accept(listenerRid);
if (rid < 0) {
Deno.core.print(`accept error ${rid}`);
return;
}
serve(rid);
}
}
main();
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