import Foundation import HaishinKit import libdatachannel protocol RTCChannel { var id: Int32 { get } func send(_ message: Data) throws } extension RTCChannel { public func send(_ message: Data) throws { try RTCError.check(message.withUnsafeBytes { pointer in return rtcSendMessage(id, pointer.bindMemory(to: CChar.self).baseAddress, Int32(message.count)) }) } }