String containing the selected ALPN protocol. Before a handshake has completed, this value is always null. When a handshake is completed but not ALPN protocol was selected, socket.alpnProtocol equals false.
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String containing the selected ALPN protocol. Before a handshake has completed, this value is always null. When a handshake is completed but not ALPN protocol was selected, socket.alpnProtocol equals false.