[fix] Check whether 'Origin' header has invalid characters #531
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Since the 'Origin' header is used as response header, a value with invalid characters would trigger 'The header content contains invalid characters' errors. Closes socketio#517
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The kind of change this PR does introduce
Current behaviour
Since the 'Origin' header is used as response header, a value with invalid characters would trigger
'The header content contains invalid characters' errors.
Closes #517