Hello, Does anybody know HOW to programming TLS negotiation using WINHTTP in Windows 8.1?

Question

Hello 
I made a program using WINHTTP . I had a question blow...
"I tried to wireshark capture network traffic when connecting to that SERVER using 'IE browser'. First
client_hello message does not include RC4 with TLS ver1.0. But next client_hello message include RC4 with TLS ver1.0.  Because that SERVER only supports RC4 cipher in TLS 1.0(no SSL3.0). I think
windows 8.1 automatically modify cipher suite. "
I just had a answer from someone . It is a new function in windows 8.1. It's called "Application protocol
negotiation" in Windows 8.1. 
so, I wonder about ... Is it possible to programming disable negotiation function? It means .. I want first
client_hello message has RC4 cipher. Because when i WINHTTP function, client_hello message does not include RC4 cipher in TLS 1.0. 
Can i include RC4 cipher in TLS 1.0 using WINHTTP function? or can i programming TLS negotiation using
WINHTTP? is it possible? or not?
please hellp me. 

Answer 1

Hello . 
Thank you for your answer. It was helpful. But i have some question.
I added blow source code . But it didn't work. i mean .. TLS_RSA_WITH_RC4_128_SHA and TLS_RSA_WITH_RC4_128_MD5 cipher
added to the top of the prioritized list. But Client_Hello message didn't include that cipher.
 Only Windows 8.1(testpc) does not work.
I don't know why...  
SECURITY_STATUS Status = ERROR_SUCCESS;
LPWSTR wszCipher = (L"TLS_RSA_WITH_RC4_128_SHA");
LPWSTR wszCipher2 = (L"TLS_RSA_WITH_RC4_128_MD5");
Status = BCryptAddContextFunction(
CRYPT_LOCAL,
L"SSL",
NCRYPT_SCHANNEL_INTERFACE,
wszCipher,
CRYPT_PRIORITY_TOP);
Status = BCryptAddContextFunction(
CRYPT_LOCAL,
L"SSL",
NCRYPT_SCHANNEL_INTERFACE,
wszCipher2,
CRYPT_PRIORITY_TOP);