Function unifyProxy

lib/utils/proxy/unify-proxy.ts:7–111

(proxyUri: Config['proxyUri'] | string, proxyObj: Config['proxy'])

const possibleProtocol = ['http', 'https', 'socks', 'socks4', 'socks4a', 'socks5', 'socks5h'];

const unifyProxy = (proxyUri: Config['proxyUri'] | string, proxyObj: Config['proxy']) => {
    proxyObj ||= {};
    const [oriProxyUri, oriProxyObj] = [proxyUri, proxyObj];
    proxyObj = { ...proxyObj };

    let proxyUrlHandler: URL | null = null;

    // PROXY_URI
    if (proxyUri && typeof proxyUri === 'string') {
        if (!proxyUri.includes('://')) {
            logger.warn(`PROXY_URI contains no protocol, assuming ${defaultProtocol}`);
            proxyUri = `${defaultProtocol}://${proxyUri}`;
        }
        try {
            proxyUrlHandler = new URL(proxyUri);
        } catch (error: any) {
            logger.error(`Parse PROXY_URI error: ${error.stack}`);
        }
    }

    // PROXY_{PROTOCOL,HOST,PORT}
    if (proxyObj.protocol || proxyObj.host || proxyObj.port) {
        if (proxyUrlHandler) {
            logger.warn('PROXY_URI is set, ignoring PROXY_{PROTOCOL,HOST,PORT}');
        } else if (proxyObj.host) {
            let tempProxyStr = proxyObj.host;

            if (tempProxyStr.includes('://')) {
                logger.warn('PROXY_HOST contains protocol, ignoring PROXY_PROTOCOL');
            } else if (proxyObj.protocol) {
                tempProxyStr = `${proxyObj.protocol}://${tempProxyStr}`;
            } else {
                logger.warn(`PROXY_PROTOCOL is not set, assuming '${defaultProtocol}'`);
                tempProxyStr = `${defaultProtocol}://${tempProxyStr}`;
            }
            try {
                proxyUrlHandler = new URL(tempProxyStr);
                if (proxyUrlHandler.port && proxyObj.port) {
                    logger.warn('PROXY_HOST contains port, ignoring PROXY_PORT');
                } else if (proxyObj.port) {
                    if (Number.parseInt(proxyObj.port)) {
                        proxyUrlHandler.port = proxyObj.port;
                    } else {
                        logger.warn('PROXY_PORT is not a number, ignoring');
                    }
                } else {
                    logger.warn('PROXY_PORT is not set, leaving proxy agent to determine');
                }
            } catch (error: any) {
                logger.error(`Parse PROXY_HOST error: ${error.stack}`);
            }
        } else {
            logger.warn('Either PROXY_{PROTOCOL,PORT} is set, but PROXY_HOST is missing, ignoring');
        }
    }

    // PROXY_AUTH
    if (proxyObj.auth && proxyUrlHandler) {