@push.rocks/smartproxy
Version:
A powerful proxy package with unified route-based configuration for high traffic management. Features include SSL/TLS support, flexible routing patterns, WebSocket handling, advanced security options, and automatic ACME certificate management.
117 lines • 8.24 kB
JavaScript
import * as plugins from '../../plugins.js';
import { logger } from './logger.js';
import { ProxyProtocolParser as ProtocolParser } from '../../protocols/proxy/index.js';
/**
* Parser for PROXY protocol v1 (text format)
* Spec: https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt
*
* This class now delegates to the protocol parser but adds
* smartproxy-specific features like socket reading and logging
*/
export class ProxyProtocolParser {
static { this.PROXY_V1_SIGNATURE = ProtocolParser.PROXY_V1_SIGNATURE; }
static { this.MAX_HEADER_LENGTH = ProtocolParser.MAX_HEADER_LENGTH; }
static { this.HEADER_TERMINATOR = ProtocolParser.HEADER_TERMINATOR; }
/**
* Parse PROXY protocol v1 header from buffer
* Returns proxy info and remaining data after header
*/
static parse(data) {
// Delegate to protocol parser
return ProtocolParser.parse(data);
}
/**
* Generate PROXY protocol v1 header
*/
static generate(info) {
// Delegate to protocol parser
return ProtocolParser.generate(info);
}
/**
* Validate IP address format
*/
static isValidIP(ip, protocol) {
return ProtocolParser.isValidIP(ip, protocol);
}
/**
* Attempt to read a complete PROXY protocol header from a socket
* Returns null if no PROXY protocol detected or incomplete
*/
static async readFromSocket(socket, timeout = 5000) {
return new Promise((resolve) => {
let buffer = Buffer.alloc(0);
let resolved = false;
const cleanup = () => {
socket.removeListener('data', onData);
socket.removeListener('error', onError);
clearTimeout(timer);
};
const timer = setTimeout(() => {
if (!resolved) {
resolved = true;
cleanup();
resolve({
proxyInfo: null,
remainingData: buffer
});
}
}, timeout);
const onData = (chunk) => {
buffer = Buffer.concat([buffer, chunk]);
// Check if we have enough data
if (!buffer.toString('ascii', 0, Math.min(6, buffer.length)).startsWith(this.PROXY_V1_SIGNATURE)) {
// Not PROXY protocol
resolved = true;
cleanup();
resolve({
proxyInfo: null,
remainingData: buffer
});
return;
}
// Try to parse
try {
const result = this.parse(buffer);
if (result.proxyInfo) {
// Successfully parsed
resolved = true;
cleanup();
resolve(result);
}
else if (buffer.length > this.MAX_HEADER_LENGTH) {
// Header too long
resolved = true;
cleanup();
resolve({
proxyInfo: null,
remainingData: buffer
});
}
// Otherwise continue reading
}
catch (error) {
// Parse error
logger.log('error', `PROXY protocol parse error: ${error.message}`);
resolved = true;
cleanup();
resolve({
proxyInfo: null,
remainingData: buffer
});
}
};
const onError = (error) => {
logger.log('error', `Socket error while reading PROXY protocol: ${error.message}`);
resolved = true;
cleanup();
resolve({
proxyInfo: null,
remainingData: buffer
});
};
socket.on('data', onData);
socket.on('error', onError);
});
}
}
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