Swift 卡在HASSPACE可用且可以';无法从NSInputStream读取数据
我在处理流事件时遇到问题。我有一个客户端应用程序,它通过TCP连接到服务器,并不断从服务器接收JSON数据 到目前为止,我创建了如下流:Swift 卡在HASSPACE可用且可以';无法从NSInputStream读取数据,swift,macos,tcp,network-programming,nsstream,Swift,Macos,Tcp,Network Programming,Nsstream,我在处理流事件时遇到问题。我有一个客户端应用程序,它通过TCP连接到服务器,并不断从服务器接收JSON数据 到目前为止,我创建了如下流: // Create Stream var readStream : Unmanaged<CFReadStream>? var writeStream : Unmanaged<CFWriteStream>? let host : CFString = NSString(string: serverUrl!) let port : UI
// Create Stream
var readStream : Unmanaged<CFReadStream>?
var writeStream : Unmanaged<CFWriteStream>?
let host : CFString = NSString(string: serverUrl!)
let port : UInt32 = UInt32(serverPort)
CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, host, port, &readStream, &writeStream)
inputStream = readStream!.takeUnretainedValue()
outputStream = writeStream!.takeRetainedValue()
inputStream!.delegate = self
outputStream!.delegate = self
inputStream!.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
outputStream!.scheduleInRunLoop(NSRunLoop.currentRunLoop(), forMode: NSDefaultRunLoopMode)
inputStream!.open()
outputStream!.open()
// Send Authentication Data
let uid = 1000000000 + arc4random() % 2000000000
let joinRoomMsg : NSData = "{\"roomid\": \(realRoomID!), \"uid\": \(uid)}".dataUsingEncoding(NSUTF8StringEncoding)!
sendSocketData(outputStream!, totalLength: joinRoomMsg.length + 16, headerLength: 16, protocolVersion: 1, action: 7, param5: 1, data: joinRoomMsg)
处理:
func stream(aStream: NSStream, handleEvent eventCode: NSStreamEvent) {
if aStream === inputStream {
switch eventCode {
case NSStreamEvent.ErrorOccurred:
print("iStream ErrorOccurred")
case NSStreamEvent.EndEncountered:
print("iStream EndEncountered")
case NSStreamEvent.OpenCompleted:
print("iStream Opened")
case NSStreamEvent.HasBytesAvailable:
print("Stream HasBytesAvailable")
// read data here...
default:
print("iStream Unknow")
}
} else if aStream === outputStream {
switch eventCode {
case NSStreamEvent.OpenCompleted:
print("oStream Opened")
case NSStreamEvent.ErrorOccurred:
print("oStream ErrorOccurred")
case NSStreamEvent.HasSpaceAvailable:
print("oStream HasSpaceAvailable")
default:
print("oStream Unknow")
}
}
}
服务器确实向我发送了JSON数据
现在我应该能够使用eventCodensstreamvent.HasBytesAvailable
从inputStream读取数据
但问题是:流事件处理程序向我发送nsstreamvent.hsaspaceavable
并卡在这里inputStream.hasBytesAvailable
returnfalse
我无法读取任何内容
根据:
如果代理接收到NSStreamEvent.hasspaceavable
事件,并且没有向流写入任何内容,则在NSOutputStream
对象接收到更多字节之前,它不会从运行循环接收更多可用空间事件。发生这种情况时,将为可用空间事件重新启动运行循环
但是我没有数据要写入流了
我确实试着给它写一些随机数据,但没有成功。
我还尝试在outputStream.hasspaceavable
returntrue
之后发送身份验证数据,但也没有任何效果
我的代码有什么错误吗?我最终意识到stream()函数不起作用,只是因为该函数的签名不正确/过时 以下是您正在使用的内容:
func stream(aStream: Stream, handleEvent eventCode: Stream.Event)
但实际上应该是:
func stream(_ aStream: Stream, handle eventCode: Stream.Event)
更新到Swift 3后,我能够在
NSStream
的委托方法流中接收数据(aStream:NSStream,handleEvent eventCode:nsstreamvent)
。我想这只是Swift 2的另一个错误。
func stream(_ aStream: Stream, handle eventCode: Stream.Event)