iOS开发项目-基于WebSocket的聊天通讯（1）

platform :ios,'7.0'

target '白__Socket--Demo1' do

   pod 'SocketRocket', '~> 0.5.1'

end

#import "ViewController.h"
#import "SRWebSocket.h"
@interface ViewController ()
@property(nonatomic,strong) SRWebSocket *webSocket;
@end

@implementation ViewController

- (void)viewDidLoad {
  [super viewDidLoad];


}

//初始化
- (void)Reconnect{

  NSLog(@"1221---open");

  self.webSocket.delegate = nil;
  [self.webSocket close];

  self.webSocket = [[SRWebSocket alloc] initWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@"ws://192.168.5.120:4141"]]];
  self.webSocket.delegate = self;
  self.title = @"Opening Connection...";

  [self.webSocket open];
}

- (void)viewWillAppear:(BOOL)animated{
  [self Reconnect];
}

- (void)viewDidDisappear:(BOOL)animated{
  // Close WebSocket
  self.webSocket.delegate = nil;
  [self.webSocket close];
  self.webSocket = nil;
 }

//连接成功
//代理方法实现
#pragma mark - SRWebSocketDelegate
- (void)webSocketDidOpen:(SRWebSocket *)webSocket{

  NSLog(@"Websocket Connected");
  self.title = @"Connected!";
 }
//连接失败
- (void)webSocket:(SRWebSocket *)webSocket didFailWithError:(NSError *)error{
  NSLog(@":( Websocket Failed With Error %@", error);

  self.title = @"Connection Failed! (see logs)";
  self.webSocket = nil;
 }
//接收到新消息的处理
- (void)webSocket:(SRWebSocket *)webSocket didReceiveMessage:(id)message{
//  NSString *str1 = self.replyContent.text;
//  NSString *str2 = [str1 stringByAppendingFormat:@"%@\n",message];
//  self.replyContent.text = str2;

  NSLog(@"%@--askl",message);

 }
//连接关闭
- (void)webSocket:(SRWebSocket *)webSocket didCloseWithCode:(NSInteger)code reason:(NSString *)reason wasClean:(BOOL)wasClean{
  NSLog(@"Closed Reason:%@",reason);
  self.title = @"Connection Closed! (see logs)";
  self.webSocket = nil;
 }
//该函数是接收服务器发送的pong消息，其中最后一个是接受pong消息的，
在这里就要提一下心跳包，一般情况下建立长连接都会建立一个心跳包，
用于每隔一段时间通知一次服务端，客户端还是在线，这个心跳包其实就是一个ping消息，
我的理解就是建立一个定时器，每隔十秒或者十五秒向服务端发送一个ping消息，这个消息可是是空的
- (void)webSocket:(SRWebSocket *)webSocket didReceivePong:(NSData *)pongPayload{

  NSString *reply = [[NSString alloc] initWithData:pongPayload encoding:NSUTF8StringEncoding];
  NSLog(@"%@",reply);
 }

#pragma mark - SendButton Response
- (IBAction)sendAction:(id)sender {
  [self.view endEditing:YES];
  // WebSocket
  if (self.webSocket) {

    [self.webSocket send:@"您好 ！"];

  }
}