/// <summary>
/// Login and return a client instance (with session managed by jserv).
/// </summary>
/// <param name="uid"></param>
/// <paramref name="pswdPlain">password in plain</param>
/// <param name="device"></param>
/// <param name="onlogin"></param>
/// <param name="err"></param>
/// <throws>SQLException the request makes server generate wrong SQL.</throws>
/// <throws>SemanticException Request can not parsed correctly</throws>
/// <throws>GeneralSecurityException other error</throws>
/// <throws>Exception, most likely the network failed</throws>
/// <return>null if failed, a SessionClient instance if login succeed.</return>
public static async Task <SessionClient> Login(string uid, string pswdPlain, string device,
OnLogin onlogin, OnError err = null)
{
byte[] iv = AESHelper.getRandom();
string iv64 = AESHelper.Encode64(iv);
if (uid == null || pswdPlain == null)
{
throw new SemanticException("user id and password can not be null.");
}
// string tk64 = AESHelper.Encrypt("-----------" + uid, pswdPlain, iv);
string tk64 = AESHelper.Encrypt(uid, pswdPlain, iv);
// formatLogin: {a: "login", logid: logId, pswd: tokenB64, iv: ivB64};
// AnsonMsg<? extends AnsonBody> reqv11 = new AnsonMsg<AnQueryReq>(Port.session);;
AnsonMsg reqv11 = AnSessionReq.formatLogin(uid, tk64, iv64, device);
string url = ServUrl(new Port(Port.session));
HttpServClient httpClient = new HttpServClient();
SessionClient[] inst = new SessionClient[1];
AnsonMsg msg = await httpClient.Post(url, reqv11).ConfigureAwait(false);
MsgCode code = msg.code;
if (code != null && MsgCode.ok == code.code)
{
// create a logged in client
inst[0] = new SessionClient(((AnSessionResp)msg.Body()[0]).ssInf);
if (onlogin != null)
{
// onlogin.ok(new SessionClient(((AnSessionResp)msg.Body()[0]).ssInf));
onlogin.ok(inst[0]);
}
if (AnClient.console)
{
Console.WriteLine(msg.ToString());
}
}
else if (err != null)
{
err.err(new MsgCode(code.code), ((AnsonResp)msg.Body(0)).Msg());
}
else
{
throw new SemanticException(
"loging failed\ncode: {0}\nerror: {1}",
code, ((AnsonResp)msg.Body()[0]).Msg());
}
return(inst[0]);
}