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fix(NODE-6803): kms proxy socket creates unhandled rejection #4444

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Merged
merged 1 commit into from
Mar 4, 2025
Merged

fix(NODE-6803): kms proxy socket creates unhandled rejection #4444

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27 changes: 16 additions & 11 deletions src/client-side-encryption/state_machine.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -352,7 +352,7 @@ export class StateMachine {
const message = request.message;
const buffer = new BufferPool();

const netSocket: net.Socket = new net.Socket();
let netSocket: net.Socket;
let socket: tls.TLSSocket;

function destroySockets() {
Expand Down Expand Up @@ -388,26 +388,31 @@ export class StateMachine {
}
}

const {
promise: willConnect,
reject: rejectOnNetSocketError,
resolve: resolveOnNetSocketConnect
} = promiseWithResolvers<void>();
netSocket
.once('error', err => rejectOnNetSocketError(onerror(err)))
.once('close', () => rejectOnNetSocketError(onclose()))
.once('connect', () => resolveOnNetSocketConnect());

let abortListener;

try {
if (this.options.proxyOptions && this.options.proxyOptions.proxyHost) {
netSocket = new net.Socket();

const {
promise: willConnect,
reject: rejectOnNetSocketError,
resolve: resolveOnNetSocketConnect
} = promiseWithResolvers<void>();

netSocket
.once('error', err => rejectOnNetSocketError(onerror(err)))
.once('close', () => rejectOnNetSocketError(onclose()))
.once('connect', () => resolveOnNetSocketConnect());

const netSocketOptions = {
...socketOptions,
host: this.options.proxyOptions.proxyHost,
port: this.options.proxyOptions.proxyPort || 1080
};

netSocket.connect(netSocketOptions);

await willConnect;

try {
Expand Down