net: websocket: Revise generation of Sec-WebSocket-Accept header

This removes some tricky math to calculate lengths and offsets,
ensuring that, when appending the WebSocket UUID to the handshake
key, the key_accept buffer won't overflow.

Coverity-ID: 183057
Signed-off-by: Leandro Pereira <leandro.pereira@intel.com>
1 file changed