CONNECT fails if it can't send the entire request in one go #6950
I did this
There are Proxy which need Kerberos Authentication, but the authentication flow sometimes failed . This not easy to reproduce.
After checking the wireshark captured file and source code of libcurl. We find the possible root cause of the issue.
When the Kerberos Auth challenge is bigger than CURL_MAX_WRITE_SIZE (16384) , the request with auth will be failed. (Will be fallbacked to using NTLM in our user's proxy environment.)
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