Method _getAgent

lib/index.js:2925–2983

(parsedUrl)

        return additionalHeaders[header] || clientHeader || _default;
    }
    _getAgent(parsedUrl) {
        let agent;
        const proxyUrl = pm.getProxyUrl(parsedUrl);
        const useProxy = proxyUrl && proxyUrl.hostname;
        if (this._keepAlive && useProxy) {
            agent = this._proxyAgent;
        }
        if (this._keepAlive && !useProxy) {
            agent = this._agent;
        }
        // if agent is already assigned use that agent.
        if (agent) {
            return agent;
        }
        const usingSsl = parsedUrl.protocol === 'https:';
        let maxSockets = 100;
        if (this.requestOptions) {
            maxSockets = this.requestOptions.maxSockets || http.globalAgent.maxSockets;
        }
        // This is `useProxy` again, but we need to check `proxyURl` directly for TypeScripts's flow analysis.
        if (proxyUrl && proxyUrl.hostname) {
            const agentOptions = {
                maxSockets,
                keepAlive: this._keepAlive,
                proxy: Object.assign(Object.assign({}, ((proxyUrl.username || proxyUrl.password) && {
                    proxyAuth: `${proxyUrl.username}:${proxyUrl.password}`
                })), { host: proxyUrl.hostname, port: proxyUrl.port })
            };
            let tunnelAgent;
            const overHttps = proxyUrl.protocol === 'https:';
            if (usingSsl) {
                tunnelAgent = overHttps ? tunnel.httpsOverHttps : tunnel.httpsOverHttp;
            }
            else {
                tunnelAgent = overHttps ? tunnel.httpOverHttps : tunnel.httpOverHttp;
            }
            agent = tunnelAgent(agentOptions);
            this._proxyAgent = agent;
        }
        // if reusing agent across request and tunneling agent isn't assigned create a new agent
        if (this._keepAlive && !agent) {
            const options = { keepAlive: this._keepAlive, maxSockets };
            agent = usingSsl ? new https.Agent(options) : new http.Agent(options);
            this._agent = agent;
        }
        // if not using private agent and tunnel agent isn't setup then use global agent
        if (!agent) {
            agent = usingSsl ? https.globalAgent : http.globalAgent;
        }
        if (usingSsl && this._ignoreSslError) {
            // we don't want to set NODE_TLS_REJECT_UNAUTHORIZED=0 since that will affect request for entire process
            // http.RequestOptions doesn't expose a way to modify RequestOptions.agent.options
            // we have to cast it to any and change it directly
            agent.options = Object.assign(agent.options || {}, {
                rejectUnauthorized: false
            });
        }
        return agent;