public static async Task <RequestPacketPreprocessResult> PreProcess(
Protocol expectedProtocol,
string packetString,
Protocol formProtocol)
{
if (TryParseRequest(packetString, formProtocol, expectedProtocol, out RequestPacket requestPacket, out object errorJObject))
{
if (requestPacket.SessionKey != null && requestPacket.SessionKey.HasValue)
{
Session session = await SessionService.GetValidSession(requestPacket.SessionKey.AccountServerId, requestPacket.SessionKey.SessionServerId);
if (session != null)
{
await SessionService.UpdateSessionByRequestPacket(session, requestPacket);
return(new RequestPacketPreprocessResult()
{
Valid = true,
RequestPacket = requestPacket,
});
}
}
errorJObject = ResultPacketBuilder.CreateInvalidSessionPacket(packetString);
}
return(new RequestPacketPreprocessResult()
{
Valid = false,
ErrorJObject = errorJObject,
});
}
public static bool TryParseRequest(
string packetString,
Protocol formProtocol,
Protocol expectedProtocol,
out RequestPacket requestPacket,
out object errorJObject)
{
requestPacket = null;
errorJObject = null;
try
{
switch (expectedProtocol)
{
#region system
case Protocol.System_Version:
requestPacket = JsonService.DeserializeFromNetwork <SystemVersionRequest>(packetString);
return(true);
case Protocol.Common_Cheat:
requestPacket = JsonService.DeserializeFromNetwork <CommonCheatRequest>(packetString);
return(true);
case Protocol.Session_Info:
requestPacket = JsonService.DeserializeFromNetwork <SessionInfoRequest>(packetString);
return(true);
#endregion
default:
throw new NotImplementedException($"protocol {expectedProtocol} has no matching request");
}
}
catch (Exception e)
{
errorJObject = ResultPacketBuilder.CreateErrorPacket(WebAPIErrorCode.InvalidPacket, e.Message, packetString);
return(false);
}
}