//GCDAsyncSocketDelegate执行代理对象#import <Foundation/Foundation.h>#import "CocoaAsyncSocket.h"typedef void(^DidReadData)(NSDictionary* didReadData);/** *  GCDAsyncSocketDelegate执行代理对象 */@interface NSObjectGCDAsyncSocket : NSObject<GCDAsyncSocketDelegate>/** *  接收到数据的处理 */@PRoperty(nonatomic,copy)DidReadData didReadData;/** *  发送的数据  如果添加新键值则需要先开辟内存 */@property(nonatomic,retain)NSMutableDictionary* writeData;/** *  发送链接请求 */-(BOOL)startConnect;/** *  单例 */+(NSObjectGCDAsyncSocket*)defaultSocket;@end

////  NSObjectGCDAsyncSocket.m//  attendance#import "NSObjectGCDAsyncSocket.h"@implementation NSObjectGCDAsyncSocket{    GCDAsyncSocket* socket;}/** *  单例 * *  @return */+(NSObjectGCDAsyncSocket *)defaultSocket{    // socket只会实例化一次    static NSObjectGCDAsyncSocket* socket=nil;    // 保证线程安全，defaultSocket只执行一次    static dispatch_once_t once;    dispatch_once(&once, ^    {        socket=[[NSObjectGCDAsyncSocket alloc] init];    });    return socket;}/** *  初始化 * * *  @return self */-(instancetype)init{    self=[super init];    if (self)    {        socket=[[GCDAsyncSocket alloc] initWithDelegate:self                                          delegateQueue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)];    }    return self;}/** *  发送链接请求 */-(BOOL)startConnect{    // 先确定断开连接再开始链接    if (socket.isConnected)    {        NSLog(@"主动断开");        [socket disconnect];            }    NSError* error;    BOOL  isSuccess= [socket connectToHost:SocketHost                                    onPort:SocketPort                                     error:&error];    if (error)    {        NSLog(@"error.localizedDescription:%@",error.localizedDescription);    }    return isSuccess;    }#pragma mark - GCDAsyncSocketDelegate/** *  链接成功 * *  @param sock sock实例 *  @param host IP *  @param port 端口 */-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host         port:(uint16_t)port{    //    NSLog(@"%s",__FUNCTION__);//    NSLog(sock.isConnected?@"YES":@"NO");//    if (sock.isConnected)//    { // NSString上传需要加"/n"分隔符方可上传成功/* [sock writeData:[@"ABCABCABCABCABCABC/n" dataUsingEncoding:NSUTF8StringEncoding] withTimeout:-1 tag:0]; *//* NSDictionary* nsDictionaryUser=@{@"gpsinfo":@"Gpsinfo", @"pswd":self.passWord, @"gpstype":@(2015), @"name":self.name, };        NSDictionary* agrement=@{@"vertion":@(1),                                 @"type1":@(2),                                 @"type2":@(0),                                 @"type3":@(0)};*/        if ([NSJSONSerialization isValidJSONObject:self.writeData])        {//            NSLog(@"isValidJSONObject");            NSError* error;            // 先转NSData再转NSString是为了保证NSDictionary格式不变            NSData *nsDataUser= [NSJSONSerialization dataWithJSONObject:self.writeData                                                                options:NSJSONWritingPrettyPrinted                                                                  error:&error];            NSString* json=[[NSString alloc] initWithData:nsDataUser                                                 encoding:NSUTF8StringEncoding];//            NSLog(@"nsDictionaryUser:%@",json);                        json=[json stringByReplacingOccurrencesOfString:@"/n"                                                 withString:@""];            json=[json stringByReplacingOccurrencesOfString:@" "                                                 withString:@""];            json=[json stringByAppendingString:@"/n"];//            NSLog(@"json:%@",json);                        [sock writeData:[json dataUsingEncoding:NSUTF8StringEncoding]                withTimeout:-1                        tag:0];                        // 保持读取的长连接            [sock readDataWithTimeout:-1                                  tag:0];                        if (error)            {                NSLog(@"localizedDescription:%@",[error localizedDescription]);                NSLog(@"localizedFailureReason:%@",[error localizedFailureReason]);            }                    }//    } }/** *  发送数据成功 * *  @param sock  sock实例 *  @param tag  标记sock */-(void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag{//    NSLog(@"didWriteDataWithTag");}/** *  已经获取到数据 * *  @param sock sock实例 *  @param data 获取到的数据 *  @param tag  标记sock */-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data      withTag:(long)tag{    //    NSLog(@"%s",__FUNCTION__);    NSError* error=nil;    NSDictionary* json=(NSDictionary*)[NSJSONSerialization JSONObjectWithData:data                                                       options:NSJSONReadingAllowFragments                                                         error:&error];        NSLog([NSJSONSerialization isValidJSONObject:json]?@"is ValidJSONObject":@"is't ValidJSONObject");    if (error)    {        NSLog(@"socketError1:%@",[error localizedDescription]);         NSLog(@"socketError2:%@",[error localizedFailureReason]);    }    self.didReadData(json);    [sock disconnect];    }/** *  链接出错 * *  @param sock sock实例 *  @param err  错误参数 */-(void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err{//    NSLog(@"%s",__FUNCTION__);        if (err)    {        NSLog(@"socketDidDisconnect:%@",[err localizedDescription]);        NSLog(@"socketDidDisconnect:%@",[err localizedFailureReason]);    }//    self.didReadData(nil);}@end