const crypto/tls.extensionCookie

5 uses

	crypto/tls (current package)
		common.go#L99: 	extensionCookie                  uint16 = 44
		handshake_messages.go#L234: 				b.AddUint16(extensionCookie)
		handshake_messages.go#L520: 		case extensionCookie:
		handshake_messages.go#L698: 				b.AddUint16(extensionCookie)
		handshake_messages.go#L800: 		case extensionCookie:

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