private _getIp()

in AutoCollection/HttpRequestParser.ts [211:240]

• 22 lines of code
• 11 McCabe index (conditional complexity)

    private _getIp() {

        // regex to match ipv4 without port
        // Note: including the port would cause the payload to be rejected by the data collector
        var ipMatch = /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/;

        var check = (str: string): string => {
            var results = ipMatch.exec(str);
            if (results) {
                return results[0];
            }
        };

        var ip = check(this.rawHeaders["x-forwarded-for"])
            || check(this.rawHeaders["x-client-ip"])
            || check(this.rawHeaders["x-real-ip"])
            || check(this.connectionRemoteAddress)
            || check(this.socketRemoteAddress)
            || check(this.legacySocketRemoteAddress);

        // node v12 returns this if the address is "localhost"
        if (!ip
            && this.connectionRemoteAddress
            && this.connectionRemoteAddress.substr
            && this.connectionRemoteAddress.substr(0, 2) === "::") {
            ip = "127.0.0.1";
        }

        return ip;
    }