在ASP.NET中,处理Socket断线重连可以通过以下几个步骤实现:
Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
Connect
方法尝试连接到服务器。在连接过程中,可以设置连接超时时间,以防止无限期等待连接。try
{
IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse("服务器IP地址"), 服务器端口号);
socket.Connect(serverEndPoint);
}
catch (SocketException ex)
{
// 处理连接错误
}
Timer heartbeatTimer = new Timer(state =>
{
try
{
byte[] heartbeatMessage = Encoding.UTF8.GetBytes("HEARTBEAT");
socket.Send(heartbeatMessage, heartbeatMessage.Length, SocketFlags.None);
}
catch (SocketException ex)
{
// 处理发送心跳包错误
}
}, null, TimeSpan.Zero, TimeSpan.FromSeconds(5)); // 每5秒发送一次心跳包
socket.BeginReceive(buffer, 0, buffer.Length, SocketFlags.None, result =>
{
int bytesReceived = socket.EndReceive(result);
if (bytesReceived > 0)
{
string receivedData = Encoding.UTF8.GetString(buffer, 0, bytesReceived);
if (receivedData == "HEARTBEAT_ACK")
{
// 处理心跳包响应
}
else
{
// 处理其他接收到的数据
}
}
else
{
// 处理接收数据错误
Reconnect();
}
}, null);
private void Reconnect()
{
socket.Close();
int retryInterval = 1000; // 初始重连间隔为1秒
Timer reconnectTimer = new Timer(state =>
{
try
{
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint serverEndPoint = new IPEndPoint(IPAddress.Parse("服务器IP地址"), 服务器端口号);
socket.Connect(serverEndPoint);
retryInterval = 1000; // 重置重连间隔
}
catch (SocketException ex)
{
// 处理重连错误
retryInterval *= 2; // 增加重连间隔
}
finally
{
if (retryInterval > 30000) // 最大重连间隔为30秒
{
retryInterval = 30000;
}
reconnectTimer.Change(retryInterval, TimeSpan.Zero);
}
}, null, TimeSpan.Zero, TimeSpan.FromSeconds(1));
}
通过以上步骤,可以实现ASP.NET中Socket的断线重连功能。在实际应用中,还需要根据具体需求对代码进行调整和优化。