using HTProfile_newPreemptiveClient(...) doesn't return back the control ????????

hello
i am using blocking sockets & sending a long request string to the server of
the foll. format: & i am not getting a return back from the function :
HTChunk* chunk = HTLoadToChunk(absolute_url, m_pRequest);

please suggest me how to pass the foll. request using blocking sockets:

request_string is :

pkcs10Request=-----BEGIN+NEW+CERTIFICATE+REQUEST-----MIIBxjCCAS8CAQAwgYYxCzA
JBgNVBAYTAkRTMQswCQYDVQQIEwJkczENMAsGA1UE%0A%0DBxMEZHNkczENMAsGA1UEChMEZHNkc
zEOMAwGA1UECxMFc2RzZHMxCjAIBgNVBAMT%0A%0DAWQxMDAuBgoJkiaJk%2FIsZAEBEyBjNmIxO
DZkMDcxNDA5ZmNiZjBmNjAzOGRmZThl%0A%0DMzAyYjCBnjANBgkqhkiG9w0BAQEFAAOBjAAwgYg
CgYBb7iYBbUX4dUC9u7nxSVkI%0A%0DFsQksjjLNDFepQFG3AdTAfEgUelPiHacnTou0usURGcsA
dmT0GniY0rBs5oEyn1z%0A%0DyXja%2B2BJjPXQ0qAVrhFUI67AUoav8il7EXppG0MMtt60iox91
Y2g6Ej%2FQ89jFRJd%0A%0DkhRInHBErGdjgB8rMH6LYQIDAQABoAAwDQYJKoZIhvcNAQEEBQADg
YEACSezL0W%2F%0A%0DApJYn3Po85gYUXmQ1yi2X9A3bcps63s2Bm%2FmStFFpPfnqgXAeZFganB
55DhAgLhG%0A%0D1gaWoLINuagFkPBCGRIRTCYmFzLnIaCB32WNVazP5z%2B9qwdJH9MG1ek8bG7
1Dc9L%0A%0DBu4UeVscciC7wondh%2FsLNN927p%2FpfvB0MyY%3D
-----END+NEW+CERTIFICATE+REQUEST-----&op=submitCSR&csrCertType=server


the request string is intended to create new certificate from the netscape
server....

the url is : "http://certserver/enrollment?above_request_string"

thanx
meenakshi