startswith
if (startswith("authproto=")) {
} else if (startswith("myauthproto=")) {
} else if (startswith("myauthname="))
else if (startswith("myauthsecret=") ||
startswith("myauthkey="))
else if (startswith("hisauthproto=")) {
} else if (startswith("hisauthname="))
else if (startswith("hisauthsecret=") ||
startswith("hisauthkey="))
else if (startswith("lcp-timeout=")) {