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fix(socks): handle IPv4-mapped IPv6 addresses in ipToSocksAddress #41110

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Merged
yury-s merged 1 commit into from
Jun 2, 2026
Merged

fix(socks): handle IPv4-mapped IPv6 addresses in ipToSocksAddress #41110

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5 changes: 5 additions & 0 deletions packages/utils/socksProxy.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -294,6 +294,11 @@ function hexToNumber(hex: string): number {
}

function ipToSocksAddress(address: string): number[] {
// Node.js may return IPv4-mapped IPv6 addresses (e.g. "::ffff:10.0.0.1") from
// socket.localAddress on dual-stack systems. Unwrap them to plain IPv4.
const ipv4Mapped = /^::ffff:(\d+\.\d+\.\d+\.\d+)$/i.exec(address);
if (ipv4Mapped)
address = ipv4Mapped[1];
if (net.isIPv4(address)) {
return [
0x01, // IPv4
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