关于UDP的连接问题
我想要做一个小游戏，需要使用多人连接。为了完成服务器的搜索这一功能，我使用了WINSOCK的UDP协议，远程地址设置为255.255.255.255以此来广播。但是多次运行都没办法接收到讯息，甚至我把255.255.255.255更改成绝对路径192.168.5.1依然无法完成连接。实在是琢磨了好几天了琢磨不出来，在此麻烦一下各位帮我看一下我的代码有什么问题。
代码写的惨不忍睹，凑合着看吧，在此谢过了。
这里放文件
军棋游戏 未完成.zip
(550.93 KB)
有一些被注释掉的代码，是我在网上搜索相关的代码测试用的，只清除了一部分，还有一小部分忘记清除掉了，大家忽略即可。
如果不想下载，我就把无效的一段代码发上来。
程序代码：Dim 刷新倒计时 As Integer, WinSockMode As Boolean
Const Client = False
Const Server = True
Dim ConnectedUser(0 To 4) As String
Option Explicit
Private Sub Command1_Click()
Winsock1.Close
Winsock1.RemotePort = 6000
Winsock1.LocalPort = 6001
Winsock2.LocalPort = 6003
Winsock2.RemotePort = 6002 '修改两种模式的端口
Winsock1.Bind '绑定端口防止被别的程序占据
Timer1.Enabled = False
Label2.Caption = "已连接的人数-0"
List1.AddItem "你的服务器" & Winsock1.LocalIP
Winsock2.Close
Winsock2.Protocol = sckUDPProtocol
Winsock2.Bind
WinSockMode = Server '设定模式服务端
Command1.Enabled = False
End Sub
Private Sub Form_Load()
'Dim lResult As Long ' Results of 1st option.
' Dim lResult2 As Long ' Results of 2nd option.
List1.Clear '清空列表
List1.AddItem "正在尝试搜索服务器中…点击服务器信息可以连接目标服务器…"
刷新倒计时 = 10 '重置刷新倒计时计数器
Winsock1.Close
Winsock2.Close
Winsock1.RemoteHost = "255.255.255.255"
Winsock1.Protocol = sckUDPProtocol
Winsock2.Protocol = sckUDPProtocol
Winsock1.RemotePort = 6001
Winsock1.LocalPort = 6000
Winsock1.Bind '绑定端口
Winsock2.LocalPort = 6002
Winsock2.RemotePort = 6003
' Change two options valid for UDP sockets.
' lResult = setsockopt(Winsock1.SocketHandle, SOL_SOCKET, SO_REUSEADDR, 1, 4)
' If (lResult = SOCKET_ERROR) Then
' MsgBox "Error setting SO_REUSEADDR option: " & CStr(Err.LastDllError)
' End If
'lResult2 = setsockopt(Winsock1.SocketHandle, SOL_SOCKET, SO_BROADCAST, 0, 4)
'If (lResult2 = SOCKET_ERROR) Then
' MsgBox "Error setting SO_BROADCAST option: " & CStr(Err.LastDllError)
'End If '允许全频道广播-自己添加的代码
Winsock1.SendData "/GetServicerIP:" & Winsock1.LocalIP '全波段广播
WinSockMode = Client '设定模式客户端
End Sub
Private Sub List1_Click()
If WinSockMode = Server Then Exit Sub '判定模式防止出错
If List1.ListIndex = 0 Or Left(List1.List(List1.ListIndex), 5) = "你的服务器" Then Exit Sub '防止用户错误单击提示信息
Winsock2.RemoteHost = Mid((List1.List(List1.ListIndex)), 7)
Winsock2.SendData "/Connect" & Winsock2.LocalIP '再次确认服务器状态,同时发送本机IP
Debug.Print Mid((List1.List(List1.ListIndex)), 7)
End Sub
Private Sub Timer1_Timer()
刷新倒计时 = 刷新倒计时 - 1
If 刷新倒计时 = 0 Then
Winsock1.SendData "/GetServicerIP:" & Winsock1.LocalIP
刷新倒计时 = 10
Else
Label2.Caption = "刷新倒计时：" & 刷新倒计时
End If
End Sub
Private Sub Winsock1_DataArrival(ByVal bytesTotal As Long)
Dim StrData As String
If WinSockMode = Server Then GoTo ServerMode '判定模式
Winsock1.GetData StrData
If Left(StrData, 11) = "/ServicerIP" Then
Debug.Print Mid(StrData, 13)
List1.AddItem "服务器IP：" & Mid(StrData, 13) '处理接收信息,获得服务器IP地址
End If
Exit Sub
'-------------------------------------------------------以上为客户端代码，以下为服务端代码
ServerMode:
Winsock1.GetData StrData
If Left(StrData, 14) = "/GetServicerIP" Then
Debug.Print Mid(StrData, 16)
Winsock1.RemoteHost = Mid(StrData, 16)
Winsock1.SendData "/ServicerIP:" & Winsock1.LocalIP '发送服务器IP地址
End If
End Sub
Private Sub Winsock2_DataArrival(ByVal bytesTotal As Long)
If WinSockMode = Server Then GoTo ServerMode '判定模式
Dim StrData As String
Winsock1.GetData StrData
If StrData = "/Connected" Then
MsgBox "服务器连接成功，获得Connected信息,连接成功服务器的IP值为" & Winsock2.RemoteHost
ElseIf StrData = "Already Full,Refuse to Enter" Then
MsgBox "服务器连接失败，返回Refuse信息，错误原因：玩家已满"
End If
Exit Sub
ServerMode: '服务器
Winsock1.GetData StrData
If Left(StrData, 8) = "/Connect" Then
Dim UserIp As String
UserIp = Replace(StrData, "/Connect", "") '获得远程IP
If ConnectedUser(4) <> "" Then '首先判定玩家人数是否已满
Winsock2.RemoteHost = UserIp
Winsock2.SendData "Already Full,Refuse to Enter"
Exit Sub
End If
Dim i As Integer
For i = 1 To 4
If ConnectedUser(i) = "" Then
ConnectedUser(i) = UserIp '写入远程IP
Winsock2.SendData "Connected" '发送链接成功信息
Exit Sub '结束SUB
End If
Next i
End If
End Sub
[此贴子已经被作者于2017-1-8 12:07编辑过]
