Description

Write writes r to w in the HTTP/1.x server response format, including the status line, headers, body, and optional trailer.

This method consults the following fields of the response r:

StatusCode
ProtoMajor
ProtoMinor
Request.Method
TransferEncoding
Trailer
Body
ContentLength
Header, values for non-canonical keys will have unpredictable behavior

The Response Body is closed after it is sent.