各位大侠，我在一个网络数据传输C/S中用了两个Winsock来分别传输数据信息和文件，我设置了不同的端口，如果1000和1001.程序有时能正常运行，有时又不能，如接收不了文件。我重新改一下端口，前几次测试又可以了，但后面又会出现问题。我反复测试了很多次，都是不稳定的问题。请问有解决方法吗？winsock端口设置有什么学问呢？
小弟虚心请教，还望各位高手指导，十分感谢。
小弟虚心请教，还望各位高手指导，十分感谢。
虽然 VB 做这种网络程序不是很好，但普通测试的用还是可以的，你应该多了解一些架构上的思路，
比如控件数组的方法做服务等，玩到高级点了，可以看看API的实际运用过程以及架构，如多线程、
线程池管理等，不过这些可能要用到别的开发工具，VB做起来不太好做，因为VB的资源不太好管理。
但最起码控件数组和握手协议以及Sock基本的使用理念应该搞清楚先。
下面是服务器的代码。
'''''''''''''''''''''''''''''''''''''''''''''''''''''
private Sub Form_Load()
SerListenInfo.LocalPort = 5007 '将 LocalPort 属性设置为一个整数。
SerListenInfo.Listen '调用 Listen 方法，使其进入监听状态
SerListenFile.LocalPort = 5008
SerListenFile.Listen
Form1.Hide
Set def_path_folder = def_path.BrowseForFolder(0, "选择工作路径", 0, ssfDESKTOP)
End SubPrivate Sub SerInfo1_Connect()
MsgBox "客户端连接成功", vbOKOnly
End SubPrivate Sub SerInfo1_DataArrival(ByVal bytesTotal As Long)
On Error Resume Next
Dim strInput As String '定义所用到的变量
Dim strData() As String
Dim strParse() As String
Dim strFlag As String
Dim strText As String '模块数据
Dim strOutput As String
Dim strReturn() As String
Dim i As Integer
Dim GN As Integer SerInfo1.GetData strInput, , bytesTotal
'MsgBox "数据接收成功", vbOKOnly
strData = Split(strInput, "\")
For i = 0 To UBound(strData)
strText = ""
strText = strData(i)
If strText <> "" Then
strParse = Split(strText, ",") '拆分新接收到的模块数据到数组中
strFlag = strParse(0)
GN = i '功能标号
' MsgBox strFlag, vbOKOnly
Select Case (strFlag) '根据标志位来判断所要执行的操作
Case "laodongli_data"
strReturn = LaoDongLi(strParse)
If strParse(3) = True Then
Call FileTransfer(def_path_folder.Items.Item.Path & "\劳动力配备结果.txt")
End If
Case "jiaoshoujia_data"
'MsgBox "succeed", vbOKOnly
strReturn = JiaoShouJia(strParse)
'MsgBox strReturn(3), vbOKOnly
If Val(strParse(4)) = 1 Then
Call FileTransfer(def_path_folder.Items.Item.Path & "\脚手架设计结果.txt")
End If
End Select
End If
Next i
For i = 0 To UBound(strData)
strData(i) = ""
Next i
strData(GN) = Join(strReturn, ",")
strOutput = Join(strData, "\")
SerInfo1.SendData strOutput
End SubPrivate Sub SerInfo1_Error(ByVal Number As Integer, Description As String, ByVal Scode As Long, ByVal Source As String, ByVal HelpFile As String, ByVal HelpContext As Long, CancelDisplay As Boolean)
SerInfo1.Close
End SubPrivate Sub SerListenFile_ConnectionRequest(ByVal requestID As Long)
SerFile1.Accept requestID
End Sub
Private Sub SerListenInfo_ConnectionRequest(ByVal requestID As Long)SerInfo1.Accept requestID
End Sub ''''''''''文件传输函数
Public Function FileTransfer(Filename As String) '核心模块，用以传输
Dim strAdd As String
Dim FreeF As Integer
Dim LenFile As Long '文件的长度
Dim bytData() As Byte '存放数据的数组
Dim ipos As Long
'首先发送文件标志
' strAdd = Filename
'发送文件
Const imax = 65535
FreeF = FreeFile '获得空闲的文件号
Open Filename For Binary As #FreeF '打开文件
DoEvents
LenFile = LOF(FreeF) '获得文件长度
If LenFile <= imax Then
ReDim bytData(0 To LenFile) '根据文件长度重新定义数组大小
Get #FreeF, , bytData '把文件读入到数组里
Close #FreeF '关闭文件
SerFile1.SendData bytData '发送数据
Exit Function
End If
Do Until (ipos >= (LenFile - imax)) '发送整块数据的循环
ReDim bytData(1 To imax)
Get #FreeF, ipos + 1, bytData
SerFile1.SendData bytData
ipos = ipos + imax '移动iPos，使它指向下来要读的数据
Loop
ReDim bytData(1 To LenFile - ipos) '发送剩下的不够一个数据块的数据
Get #FreeF, ipos + 1, bytData
SerFile1.SendData bytData
Close #FreeF
MsgBox "发送成功", vbOKOnly
End Function''''''''''''''''''''''''''''''''''''''''''''''
下面是客户端的代码
''''''''''''''''''''''''''''''''''''Private str1 As StringPrivate Sub Command1_Click()Hide MeForm_GongNeng.ShowEnd SubPrivate Sub Command2_Click()'Call SkinRemove
EndEnd SubPrivate Sub ClientFile_Connect()
MsgBox "文件传输控件连接成功", vbOKOnly
End SubPrivate Sub ClientFile_DataArrival(ByVal bytesTotal As Long)
On Error Resume Next
Dim data As String
ClientFile.GetData data, , bytesTotal '取得数据
MsgBox "客户端收到文件数据", vbOKOnly
Dim intFile As Integer
intFile = FreeFile '产生一个文件号
MkDir def_path_folder.Items.Item.Path & "\分析结果文件" '在当前路径下建立一个文件夹
Kill def_path_folder.Items.Item.Path & "\分析结果文件\" & "劳动力配备结果.txt"
Open def_path_folder.Items.Item.Path & "\分析结果文件\" & "劳动力配备结果.txt" For Binary As #intFile
'Kill def_path_folder.Items.Item.Path & "\分析结果文件\" & "脚手架设计结果.txt"
' Open def_path_folder.Items.Item.Path & "\分析结果文件\" & "脚手架设计结果.txt" For Binary As #intFile
Put #intFile, LOF(intFile) + 1, data '写入数据
Close #intFile '关闭文件
End SubPrivate Sub Form_Load()Skin1.ApplySkin Me.hWndImage1.Height = Screen.Height * 0.75
Image1.Width = Screen.Width * 0.45Image1.Left = Screen.Width / 3.5
Image1.Top = Screen.Height / 10ClientInfo.RemoteHost = ClientInfo.LocalHostName '设置远程用户
ClientInfo.RemotePort = 5007 '指定远程端口号
ClientFile.RemoteHost = ClientFile.LocalHostName '设置远程用户
ClientFile.RemotePort = 5008 '指定远程端口号 str1 = "日一二三四五六"
StatusBar1.Panels.Item(1).Text = "星期" & Mid(str1, Weekday(Date), 1)
StatusBar1.Panels.Item(2).Text = DateEnd SubPrivate Sub mnuabout_Click()
Form_about.ShowEnd SubPrivate Sub mnuanimate_Click()
form_help_animation.Show
End SubPrivate Sub mnudataanalize_Click()
Form_dataanalize.ShowForm_dataanalize.Left = Screen.Width / 4
Form_dataanalize.Top = Screen.Height / 10End SubPrivate Sub mnuexit_Click()
End
End Sub
Private Sub M_analize_Click()
Me.Hide
Form_ShuJuFenXi.Show
End Sub
Private Sub M_animation_Click()
Form_DongHua.Show
End SubPrivate Sub M_time_Click()
Me.Hide
Form_GongShi.Show
End SubPrivate Sub M_scaffold_Click()
Me.Hide
Form_JiaoShou.ShowEnd SubPrivate Sub M_labor_Click()
Me.Hide
'Form_LaoDongLi.show 1
Form_LaoDongLi.Show
End Sub
Private Sub mnufold_Click()
Form_help_jiaoshou.Show 1
End SubPrivate Sub mnulabor_Click()
form_help_labor.Show 1
End SubPrivate Sub mnupath_Click()Set def_path_folder = def_path.BrowseForFolder(0, "选择工作路径", 0, ssfDESKTOP)
MsgBox def_path_folder.Items.Item.Path, vbOKOnlyEnd SubPrivate Sub mnutime_Click()
form_help_gongshi.Show 1
End SubPrivate Sub Toolbar1_ButtonClick(ByVal Button As ComctlLib.Button)On Error GoTo ErrorHandler '''''错误处理If def_path_folder.Title <> "" Then
Select Case Button.Key
Case "m_analize"
Call M_analize_Click
Case "m_animation"
Call M_animation_Click
Case "m_time"
Call M_time_Click
Case "m_scaffold"
Call M_scaffold_Click
Case "m_labor"
Call M_labor_Click
Case "m_exit"
End
End Select
End If
Exit Sub
ErrorHandler:''点击退出的特殊情况If Button.Key = "m_exit" Then
End
End Ifresponse = MsgBox("请在首页“帮助”栏选择工作路径", vbOKOnly, "提示")If response = 1 Then
End If ' Resume Next
End Sub
Private Sub cmdConnect_Click()
ClientInfo.Connect '连接
ClientFile.Connect
End Sub
Private Sub ClientInfo_Connect()
MsgBox "服务器连接成功", vbOKOnly
End Sub
Private Sub ClientInfo_DataArrival(ByVal bytesTotal As Long)
Dim strInput As String
Dim strData() As String
Dim strtext As String
Dim strparse() As String
Dim strFlag As String ClientInfo.GetData strInput '接收信息 strData = Split(strInput, "\")
For i = 0 To UBound(strData)
strtext = ""
strtext = strData(i)
If strtext <> "" Then
strparse = Split(strtext, ",") '拆分新接收到的模块数据到数组中
strFlag = strparse(0)
'MsgBox strFlag, vbOKOnly
Select Case (strFlag) '根据标志位来判断所要执行的操作
Case "laodongli_data"
Form_LaoDongLi.SkinLabel2.Caption = strparse(1)
End Select
End If
NextEnd Sub