iOS socket Stream 服务器端 及 客户端 演示

iOS socket Stream

测试环境，mac osx 10.8

一：建立服务器端

由于mac osx10.8 已经集成 python2和 Twisted,我们可以直接利用此，构建一个简单的socket 服务器

如下测试一个简单的聊天 socket

并，定义，加入聊天时发送：iam:用户名

发送信息时：msg:信息

终端：vim server.py  回车，copy入如下代码

from twisted.internet.protocol import Factory, Protocol

from twisted.internet import reactor

class IphoneChat(Protocol):

    def connectionMade(self):

        self.factory.clients.append(self)

        print "clients are ", self.factory.clients
def connectionLost(self, reason):

        self.factory.clients.remove(self)
def dataReceived(self, data):

        a = data.split(‘:‘)

        print a

        if len(a) > 1:

            command = a[0]

            content = a[1]
msg = ""

            if command == "iam":

                self.name = content

                msg = self.name + " has joined"
elif command == "msg":

                msg = self.name + ": " + content

                print msg
for c in self.factory.clients:

                c.message(msg)
def message(self, message):

        self.transport.write(message + ‘\n‘)
factory = Factory()

factory.clients = []

factory.protocol = IphoneChat

reactor.listenTCP(80, factory)

print "Iphone Chat server started"

reactor.run()

上面 server.py建立好之后

在终端：sudo python server.py   开启服务器 看到  Iphone Chat server started
，开启成功；

二：终端测试服务器

1：在上面服务器开启成功之后；

2：打开另一个终端：telnet localhost 80 回车，即可看到 socket 连接成功；Connected to
localhost.

3: 在终端里面输入测试信息：iam:cc 回车； msg:hi   回车；即可以两个终端下看到实时的信息传递情况；

4：再新建立一个终端：telnet localhost 80 即可实现，多个client 连接 服务器 socket

三：在iOS 端建立 socket 连接 client

1:先建立两个实例变量，并实现代理

@interface ViewController : UIViewController<NSStreamDelegate>

{

    NSInputStream *inputStream;

    NSOutputStream *outputStream;

}
@end

2：建立 socket 与本地 socket 服务器

- (void)initNetworkCommunication

{

    CFReadStreamRef readStream;

    CFWriteStreamRef writeStream;

    CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"localhost", 80, &readStream, &writeStream);

    inputStream = (__bridge NSInputStream *)readStream;

    outputStream = (__bridge NSOutputStream *)writeStream;

[inputStream setDelegate:self];

    [outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];

    [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];

    [outputStream open];
}

3：测试加入聊天和发送聊天

- (void)joinChatServer

{

    NSString *name=@"cc";

    NSString *response = [NSString stringWithFormat:@"iam:%@",name];

    NSData *data = [[NSData alloc]initWithData:[response dataUsingEncoding:NSUTF8StringEncoding]];

[outputStream write:[data bytes] maxLength:[data length]];
}
- (void)sendMesage

{

    NSString *mess=@"hello world";

    NSString *response = [NSString stringWithFormat:@"msg:%@",mess];

    NSData *data = [[NSData alloc]initWithData:[response dataUsingEncoding:NSUTF8StringEncoding]];
[outputStream write:[data bytes] maxLength:[data length]];

}

4：在代理中接收socket传递的信息

- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent {

switch (streamEvent) {
case NSStreamEventOpenCompleted:

            NSLog(@"Stream opened");

            break;
case NSStreamEventHasBytesAvailable:

            if (theStream == inputStream) {
uint8_t buffer[1024];

                int len;
while ([inputStream hasBytesAvailable]) {

                    len = [inputStream read:buffer maxLength:sizeof(buffer)];

                    if (len > 0) {
NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSASCIIStringEncoding];
if (nil != output) {

                            NSLog(@"server said: %@", output);

                        }

                    }

                }

            }

            break;
case NSStreamEventErrorOccurred:

            NSLog(@"Can not connect to the host!");

            break;
case NSStreamEventEndEncountered:

            break;
default:

            NSLog(@"Unknown event");

    }
}

四：参考:

http://www.raywenderlich.com/3932/networking-tutorial-for-ios-how-to-create-a-socket-based-iphone-app-and-server

https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/UsingSocketsandSocketStreams.html

http://www.cnblogs.com/kesalin/archive/2013/04/14/ios_cfnetwork.html

https://developer.apple.com/library/ios/qa/qa1652/_index.html

https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/Streams/Articles/ReadingInputStreams.html

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