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content / test / data / direct_sockets / udp.js [blame]
'use strict';
const assertEq = (actual, expected) => {
if (actual !== expected) {
throw `Expected ${JSON.stringify(expected)}, got ${JSON.stringify(actual)}`;
}
};
async function launchUdpEchoServer(server, requiredBytes, clientAddress, clientPort) {
let bytesEchoed = 0;
const { readable, writable } = await server.opened;
const reader = readable.getReader();
const writer = writable.getWriter();
while (bytesEchoed < requiredBytes) {
const { value: { data, remoteAddress, remotePort }, done } = await reader.read();
assertEq(done, false);
assertEq(remoteAddress, clientAddress);
assertEq(remotePort, clientPort);
for (let index = 0; index < data.length; index++) {
assertEq(data[index], bytesEchoed % 256);
bytesEchoed++;
}
await writer.write({ data, remoteAddress, remotePort });
}
assertEq(bytesEchoed, requiredBytes);
reader.releaseLock();
writer.releaseLock();
}
async function sendLoop(socket, requiredBytes) {
let bytesWritten = 0;
let chunkLength = 0;
const { writable } = await socket.opened;
const writer = writable.getWriter();
while (bytesWritten < requiredBytes) {
chunkLength = Math.min(chunkLength + 1,
requiredBytes - bytesWritten);
let chunk = new Uint8Array(chunkLength);
for (let index = 0; index < chunkLength; index++) {
chunk[index] = bytesWritten % 256;
bytesWritten++;
}
await writer.ready;
await writer.write({ data: chunk });
}
assertEq(bytesWritten, requiredBytes);
writer.releaseLock();
}
async function readLoop(socket, requiredBytes) {
let bytesRead = 0;
const { readable } = await socket.opened;
const reader = readable.getReader();
while (bytesRead < requiredBytes) {
const { value: { data }, done } = await reader.read();
assertEq(done, false);
for (let index = 0; index < data.length; index++) {
assertEq(data[index], bytesRead % 256);
bytesRead++;
}
}
assertEq(bytesRead, requiredBytes);
reader.releaseLock();
}
async function closeUdp(options) {
try {
let udpSocket = new UDPSocket(options);
await udpSocket.opened;
await udpSocket.close();
return 'closeUdp succeeded';
} catch (error) {
return ('closeUdp failed: ' + error);
}
}
async function sendUdpAfterClose(options, requiredBytes) {
try {
let udpSocket = new UDPSocket(options);
let { writable } = await udpSocket.opened;
await udpSocket.close();
return await sendLoop(udpSocket, requiredBytes);
} catch (error) {
return ('send failed: ' + error);
}
}
async function readUdpAfterSocketClose(options) {
try {
let udpSocket = new UDPSocket(options);
let { readable, writable } = await udpSocket.opened;
let reader = readable.getReader();
let writer = writable.getWriter();
let rp = reader.read().catch(() => {});
await reader.cancel();
await writer.abort();
await rp;
return 'readUdpAferSocketClose succeeded.';
} catch (error) {
return ('readUdpAfterSocketClose failed: ' + error);
}
}
async function readUdpAfterStreamClose(options) {
try {
let udpSocket = new UDPSocket(options);
let { readable } = await udpSocket.opened;
let reader = readable.getReader();
let rp = reader.read().catch(() => {});
await reader.cancel();
let { value, done } = await rp;
if (!done) {
return 'Stream is not closed!';
}
return 'readUdpAferStreamClose succeeded.';
} catch (error) {
return ('readUdpAfterStreamClose failed: ' + error);
}
}
async function closeUdpWithLockedReadable(options, unlock = false) {
try {
let udpSocket = new UDPSocket(options);
let { readable } = await udpSocket.opened;
let reader = readable.getReader();
if (unlock) {
reader.releaseLock();
}
await udpSocket.close();
if (unlock) {
await udpSocket.closed;
}
return 'closeUdpWithLockedReadable succeeded.';
} catch (error) {
return 'closeUdpWithLockedReadable failed: ' + error;
}
}
async function read(reader) {
return reader.read().then(() => true, () => false);
}
async function write(writer, value) {
const encoder = new TextEncoder();
return writer.write({ data: encoder.encode(value) }).then(() => true, () => false);
}
async function readWriteUdpOnError(socket) {
try {
let { readable, writable } = await socket.opened;
let reader = readable.getReader();
let writer = writable.getWriter();
let rp = read(reader);
let wp = write(writer, '_');
let [read_request_success, write_request_success] = await Promise.all([rp, wp]);
if (!read_request_success && !write_request_success) {
return 'readWriteUdpOnError succeeded.';
} else {
throw new TypeError(`read_request_success = ${read_request_success}, write_request_success = ${write_request_success}`);
}
} catch (error) {
return 'readWriteUdpOnError failed: ' + error;
}
}
async function exchangeUdpPacketsBetweenClientAndServer() {
const kRequiredDatagrams = 35;
const kRequiredBytes =
kRequiredDatagrams * (kRequiredDatagrams + 1) / 2;
try {
// |localPort| is intentionally omitted so that the OS will pick one itself.
const serverSocket = new UDPSocket({ localAddress: "127.0.0.1" });
const { localPort: serverSocketPort } = await serverSocket.opened;
// Connect a client to the server.
const clientSocket = new UDPSocket({
remoteAddress: "127.0.0.1",
remotePort: serverSocketPort
});
const { localAddress: clientLocalAddress, localPort: clientLocalPort } = await clientSocket.opened;
launchUdpEchoServer(serverSocket, kRequiredBytes, clientLocalAddress, clientLocalPort);
sendLoop(clientSocket, kRequiredBytes);
await readLoop(clientSocket, kRequiredBytes);
await clientSocket.close();
await serverSocket.close();
return "exchangeUdpPacketsBetweenClientAndServer succeeded.";
} catch (error) {
return "exchangeUdpPacketsBetweenClientAndServer failed: " + error;
}
}
async function testUdpMessageConfiguration(socketOptions, message) {
try {
const socket = new UDPSocket(socketOptions);
const { writable } = await socket.opened;
const writer = writable.getWriter();
await writer.write(message);
return "testUdpMessageConfiguration succeeded.";
} catch (error) {
return "testUdpMessageConfiguration failed: " + error;
}
}