錯誤描述

• 環(huán)境:AsyncSocket客戶端建立TCP連接
• 情景1:在網(wǎng)絡連接正常情況下提陶，啟動應用程序框都，對socket的連接确丢、斷開茫多、重連等操作都沒有問題祈匙；
• 情景2:在網(wǎng)絡異常情況下啟動應用程序然后恢復網(wǎng)絡,或后臺切換網(wǎng)路時,socket無法正常通信,顯示連接成功，但是緊接著doCFReadStreamCallback回調(diào)中報錯天揖，然后就closeWithError
  • domain=kCFStreamErrorDomainPOSIX, error=57

一:網(wǎng)上查閱在release情況下指針釋放問題,修改如下(并沒有解決問題)

static void MyCFReadStreamCallback (CFReadStreamRef stream, CFStreamEventType type, void *pInfo)
{
    @autoreleasepool {
        
        AsyncSocket *theSocket =[[AsyncSocket alloc]init];
        theSocket =  (__bridge AsyncSocket *)pInfo;
        [theSocket doCFReadStreamCallback:type forStream:stream];
        
    }
}

?二.判斷各種網(wǎng)絡情況再選擇重新連接(實測解決問題)

• 1.先檢查有沒有在onSocket:willDisconnectWithError:中去重新創(chuàng)建socket并連接,如果有要去掉,正確應該在- (void)onSocketDidDisconnect:(AsyncSocket *)sock中重新連接,否則會造成closeWithError運行報錯

  • 注意調(diào)用順序onSocket:willDisconnectWithError:->onSocketDidDisconnect:

• 2.根據(jù)網(wǎng)絡狀況判斷是否進行重連

• 3.此處沒有貼心跳包的代碼,如果需要自行添加.

typedef enum SocketStatus{
    SocketOfflineByServer,
    SocketOfflineByUser,
    SocketOfflineByWifiCut,
}_SocketStatus;

- (void)onSocket:(AsyncSocket *)sock willDisconnectWithError:(NSError *)err
{
    //對收到的數(shù)據(jù)進行校驗&分析&處理
    NSDictionary *infoDic=[NSJSONSerialization JSONObjectWithData:sock.unreadData options:NSJSONReadingAllowFragments error:nil];
    NSLog(@"Socket發(fā)送失敗 json=%@",infoDic);
    
    if (err.code == 57) {
        self.socket.userData = SocketOfflineByWifiCut;
    }
}

- (void)onSocketDidDisconnect:(AsyncSocket *)sock
{
    NSLog(@"斷開連接,釋放socket");
    if (sock.userData == SocketOfflineByServer) {
        // 服務器掉線菊卷，重連
        self.pushCount = 0;
        [self reconnectServer];
    }
    else if (sock.userData == SocketOfflineByUser) {
        // 如果由用戶斷開缔恳，不進行重連
        return;
    }else if (sock.userData == SocketOfflineByWifiCut) {
        
        // wifi斷開，不進行重連
        return;
    }
}

- (void)cutOffScoket
{
    self.socket.userData = SocketOfflineByUser;
    NSLog(@"斷開連接");
    if (self.socket!=nil) {
        [self.socket disconnect];
        [self.socket setDelegate:nil];
        self.socket = nil;
    }
}

- (void)reconnectServer{
    if (_socket!=nil) {
        [_socket disconnect];
        [_socket setDelegate:nil];
        _socket = nil;
    }
    self.socket = nil;
    self.socket = [[AsyncSocket alloc] initWithDelegate:self];
    NSError *error = nil;
    //重新連接
    [self.socket connectToHost:SocketHOST onPort:SokcetPORT error:&error];
    if (error) {
        NSLog(@"SocketAgainTryConnectError:%@",error);
    }
}

- (void)connectToServer
{

    self.socket = [[AsyncSocket alloc] initWithDelegate:self];
    self.socket.userData = SocketOfflineByServer;
    NSError *error = nil;
    //開始連接
    [self.socket connectToHost:SocketHOST onPort:SocketPORT error:&error];
    NSLog(@"tryConnect....");
    
    if (error) {
        NSLog(@"error=%@",error);
    }
}