Fix #340 "HTTP/1.1 400 Illegal character CNTL=0xf" #341
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…owBits/clientMaxWindowBits being uint8_t (signed char).
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If the per message compression is active the websocket client sends an illegal header to the server.
Instead of
... ; server_max_window_bits=15; client_max_window_bits=15the client sends
? ...; server_max_window_bits=\xf; client-max_window_bits=\xf`
This is caused by using uint8_t that is interpreted as character instead of a number when building the headers.
This PR fixes this bug by casting the
uint8_tto anintwhen building the headers.