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module EventMachine
module WebSocket
module Handshake75
def self.handshake(headers, path, secure)
scheme = (secure ? "wss" : "ws")
location = "#{scheme}://#{headers['host']}#{path}"
upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n"
upgrade << "Upgrade: WebSocket\r\n"
upgrade << "Connection: Upgrade\r\n"
upgrade << "WebSocket-Origin: #{headers['origin']}\r\n"
upgrade << "WebSocket-Location: #{location}\r\n"
if protocol = headers['sec-websocket-protocol']
validate_protocol!(protocol)
upgrade << "Sec-WebSocket-Protocol: #{protocol}\r\n"
end
upgrade << "\r\n"
return upgrade
end
def self.validate_protocol!(protocol)
raise HandshakeError, "Invalid WebSocket-Protocol: empty" if protocol.empty?
# TODO: Validate characters
end
end
end
end
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