iOS使用GCDSocketManager实现长连接

来源：互联网发布：中国古代盔甲知乎编辑：程序博客网时间：2024/06/05 17:39

.h文件
#import <Foundation/Foundation.h>#import "GCDAsyncSocket.h"@interface GCDSocketManager : NSObject@property(nonatomic,strong) GCDAsyncSocket *socket;//单例+ (instancetype)sharedSocketManager;//连接- (void)connectToServer;//断开- (void)cutOffSocket;@end
.m文件
#import "GCDSocketManager.h"#define SocketHost @"地址"#define SocketPort 端口@interface GCDSocketManager()<GCDAsyncSocketDelegate>//握手次数@property(nonatomic,assign) NSInteger pushCount;//断开重连定时器@property(nonatomic,strong) NSTimer *timer;//重连次数@property(nonatomic,assign) NSInteger reconnectCount;@end@implementation GCDSocketManager//全局访问点+ (instancetype)sharedSocketManager {    static GCDSocketManager *_instance = nil;    static dispatch_once_t onceToken;    dispatch_once(&onceToken, ^{        _instance = [[self alloc] init];    });    return _instance;}//可以在这里做一些初始化操作- (instancetype)init{    self = [super init];    if (self) {            }    return self;}#pragma mark 请求连接//连接- (void)connectToServer {    self.pushCount = 0;        self.socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];        NSError *error = nil;    [self.socket connectToHost:SocketHost onPort:SocketPort error:&error];        if (error) {        DLog(@"SocketConnectError:%@",error);    }}#pragma mark 连接成功//连接成功的回调- (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port {    DLog(@"socket连接成功");    [self sendDataToServer];}//连接成功后向服务器发送数据- (void)sendDataToServer {    //发送数据代码省略...        //发送    [self.socket writeData:jsonData withTimeout:-1 tag:1];        //读取数据    [self.socket readDataWithTimeout:-1 tag:200];}//连接成功向服务器发送数据后,服务器会有响应- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag {        [self.socket readDataWithTimeout:-1 tag:200];        //服务器推送次数    self.pushCount++;       //在这里进行校验操作,情况分为成功和失败两种,成功的操作一般都是拉取数据}#pragma mark 连接失败//连接失败的回调- (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err {    DLog(@"Socket连接失败");        self.pushCount = 0;        NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];        NSString *currentStatu = [userDefaults valueForKey:@"Statu"];        //程序在前台才进行重连    if ([currentStatu isEqualToString:@"foreground"]) {                //重连次数        self.reconnectCount++;                //如果连接失败 累加1秒重新连接 减少服务器压力        NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:1.0 * self.reconnectCount target:self selector:@selector(reconnectServer) userInfo:nil repeats:NO];                self.timer = timer;    }}//如果连接失败,5秒后重新连接- (void)reconnectServer {        self.pushCount = 0;        self.reconnectCount = 0;        //连接失败重新连接    NSError *error = nil;    [self.socket connectToHost:SocketHost onPort:SocketPort error:&error];    if (error) {        DLog(@"SocektConnectError:%@",error);    }}#pragma mark 断开连接//切断连接- (void)cutOffSocket {    DLog(@"socket断开连接");        self.pushCount = 0;        self.reconnectCount = 0;        [self.timer invalidate];    self.timer = nil;        [self.socket disconnect];}@end


作者：huber
链接：https://www.jianshu.com/p/60fd4ae4cd74
來源：简书
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