const crypto/tls.extensionALPN

7 uses

	crypto/tls (current package)
		common.go#L93: 	extensionALPN                    uint16 = 16
		handshake_messages.go#L205: 				b.AddUint16(extensionALPN)
		handshake_messages.go#L491: 		case extensionALPN:
		handshake_messages.go#L654: 				b.AddUint16(extensionALPN)
		handshake_messages.go#L772: 		case extensionALPN:
		handshake_messages.go#L857: 				b.AddUint16(extensionALPN)
		handshake_messages.go#L892: 		case extensionALPN:

The pages are generated with Golds v0.2.8-preview. (GOOS=darwin GOARCH=arm64)