TWSocketServer, TWSocketClient.OnDataAvailable tiggers without any data

[ertank 27]

Hello,

 

I am using v8.71 of ICS. There is a device connecting to my application and sending some data. So, I basically wait for a connection and communicate with that device both ways.

Occationally, TWSocketClient.OnDataAvailable event triggers even if there is no data ( aka GetRcvdCount = -1)

 

I just wonder if this is normal and what might be possible reasons?

 

Thanks & Regards,

Ertan

Edited May 22, 2023 by ertank

[Angus Robertson 574]

Yes, this is normal behaviour, better to have DataAvailable trigger too often than miss potential data.  Sorry, can not tell you why it was designed that way 25 years ago...

 

Angus

 

[Fr0sT.Brutal 900]

AFAIR GetRcvdCount was marked as not 100% proof somewhere in the code and it was always recommended to try Recv in trigger.