Question

**Server Code**

Dim serverSocket As Socket
Dim clientSocket As Socket
Dim PubIP as String = "82.XX.XX.XX"
Dim LocalIP as String = "192.XX.XX.XX"

Dim byteData(1023) As Byte

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Dim host As String = Dns.GetHostName
    Dim ip As IPHostEntry = Dns.GetHostEntry(host)
    serverSocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
    Dim IpEndPoint As IPEndPoint = New IPEndPoint(System.Net.IPAddress.Parse(PubIP), 8080) 
    Me.Text = IpEndPoint.ToString
    serverSocket.Bind(IpEndPoint) 'it can't bind public ip but i need public ip to run the client from other pc and connect to server for chating.
    serverSocket.Listen(5)
    serverSocket.BeginAccept(New AsyncCallback(AddressOf OnAccept), Nothing)
End Sub

**Client Code**

Dim clientSocket As Socket
Dim byteData(1023) As Byte

Dim PubIP as String = "82.XX.XX.XX"
Dim LocalIP as String = "192.XX.XX.XX"

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    clientSocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
    Dim ipAddress As IPAddress = ipAddress.Parse(PubIP)
    Dim ipEndPoint As IPEndPoint = New IPEndPoint(ipAddress, 8080)
    clientSocket.BeginConnect(ipEndPoint, New AsyncCallback(AddressOf OnConnect), Nothing)
End Sub

当我使用localip运行服务器时，它运行正常，我只能从我的计算机连接客户端（服务器运行的地方）。如果我尝试从另一台计算机运行客户端，它将无法连接到服务器。

所以我分配了公共IP，但是当我运行程序时，visual studio显示了这个错误：请求的地址在其上下文中无效。

所以我被困在这里。我只能连接客户端，如果从我的电脑运行，但我需要将客户端从我的朋友电脑连接到我的电脑上的服务器。

欢迎任何其他方式。

Answer 1

使用IPAddress.Any而不是特定的IP地址，使您的服务器接受所有接口上的连接。

除此之外，由于您提及“本地”和“公开”IP地址，因此您需要了解Network Address Translation和port forwarding。

套接字客户端和服务器不工作

1 个答案: