Socket客户端（三）

1、将GCDAsyncSocket框架导入项目中
2、代码实现如下：

#import <Foundation/Foundation.h>@interface MessageModel : NSObject@property (nonatomic, strong) NSString *type;@property (nonatomic, strong) NSString *context;@end

#import <UIKit/UIKit.h>@interface MessageCell : UITableViewCell@property (nonatomic, strong) UILabel *message;@end

#import "MessageCell.h"@implementation MessageCell-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{    if ([super initWithStyle:style reuseIdentifier:reuseIdentifier]) {        self.message = [[UILabel alloc] initWithFrame:CGRectMake(20, 10, [UIScreen mainScreen].bounds.size.width - 40, 20)];        [self.contentView addSubview:self.message];    }    return self;}- (void)setSelected:(BOOL)selected animated:(BOOL)animated {    [super setSelected:selected animated:animated];    // Configure the view for the selected state}

#import "ViewController.h"#import "GCDAsyncSocket.h"#import "MessageCell.h"#import "MessageModel.h"#define kWidth self.view.frame.size.width#define kHeight self.view.frame.size.height@interface ViewController ()<GCDAsyncSocketDelegate,UITableViewDataSource,UITableViewDelegate>@property (nonatomic, strong) GCDAsyncSocket *socket;@property (nonatomic, strong) UITableView *tableView;@property (nonatomic, strong) UITextField *textFiled;@property (nonatomic, strong) UIButton *sendBtn;@property (nonatomic, strong) NSMutableArray *dataSource;@end@implementation ViewController-(NSMutableArray *)dataSource{    if (!_dataSource) {        self.dataSource = [NSMutableArray array];    }    return _dataSource;}- (void)viewDidLoad {    [super viewDidLoad];    self.tableView = [[UITableView alloc] initWithFrame:CGRectMake(0, 0,kWidth ,kHeight - 40) style:UITableViewStyleGrouped];    self.tableView.dataSource = self;    [self.view addSubview:self.tableView];    self.textFiled = [[UITextField alloc] initWithFrame:CGRectMake(20, kHeight - 40, kWidth - 100, 30)];    self.textFiled.backgroundColor = [UIColor grayColor];    [self.view addSubview:self.textFiled];    self.sendBtn = [UIButton buttonWithType:UIButtonTypeCustom];    self.sendBtn.frame = CGRectMake(kWidth - 100, kHeight - 40, 80, 30);    [self.sendBtn setTitle:@"发送" forState:UIControlStateNormal];    self.sendBtn.backgroundColor = [UIColor orangeColor];    [self.sendBtn addTarget:self action:@selector(handleSenderAction) forControlEvents:UIControlEventTouchUpInside];    [self.view addSubview:self.sendBtn];    //连接到聊天服务器    GCDAsyncSocket *socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_global_queue(0, 0)];    [socket connectToHost:@"192.168.0.187" onPort:5239 error:nil];    self.socket = socket;    [self.tableView registerClass:[MessageCell class] forCellReuseIdentifier:@"cell"];}-(void)handleSenderAction{    if (self.textFiled.text.length >0) {        [self.socket writeData:[self.textFiled.text dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1 tag:0];        //添加到数据源        MessageModel *model = [[MessageModel alloc] init];        model.type = @"s";        model.context = [NSString stringWithFormat:@"ME::%@",self.textFiled.text];        [self.dataSource addObject:model];        //刷新        [self.tableView reloadData];    }    self.textFiled.text = @"";}-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    return 1;}-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return self.dataSource.count;}-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell" forIndexPath:indexPath];    MessageModel *mmodel = self.dataSource[indexPath.row];    cell.message.text = mmodel.context;    if ([mmodel.type isEqualToString:@"r"]) {        cell.message.textAlignment = NSTextAlignmentLeft;    }else{        cell.message.textAlignment = NSTextAlignmentRight;    }    return cell;}-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag{    //1、读取数据    NSString *string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];    NSLog(@"%@",string);    //2、添加到数据源    MessageModel *model = [[MessageModel alloc] init];    model.type = @"r";    model.context = [NSString stringWithFormat:@"Other::%@",string];    [self.dataSource addObject:model];    //3、刷新数据    [[NSOperationQueue mainQueue]addOperationWithBlock:^{        [self.tableView reloadData];    }];    //4、每次接受完数据，都要再次监听数据    [sock readDataWithTimeout:-1 tag:0];}-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port{    NSLog(@"连接主机成功");    //监听数据    [self.socket readDataWithTimeout:-1 tag:0];}-(void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err{    NSLog(@"连接主机失败%@",err);}@end

3、连接主机

4、不同客户端之间互相发送信息