tool:visual c++ 6.0 sp6

I use HTTPSendRequestEx to send a POST request to http server

and than use InternetWriteFile write data to http server

finally I use HTTPEndRequest to end the request

but HTTPEndRequest return me an error code:12032, it means "retry"!

so I use "goto" statement goto HTTPSendRequestEx call to redo the action

and this time HttpEndRequest success!

Why I must resend? Why 12032 will return?