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    用socket实现简单的文件传输

    编辑:教程网 来源:网络 时间:2011年10月23日 20:46
    '发送端:
    'By wgscd

    Dim sendsocket As New Net.Sockets.Socket(Net.Sockets.AddressFamily.InterNetwork, Net.Sockets.SocketType.Stream, Net.Sockets.ProtocolType.Tcp)
    '实例化socket
    Dim ipendpiont As New Net.IPEndPoint(Net.IPAddress.Parse("127.0.0.1"), 8888) '建立终结点
    'OpenFileDialog1.ShowDialog()
    Dim fs As New IO.FileStream("c:\wgscd.dat", IO.FileMode.OpenOrCreate, IO.FileAccess.Read) '要传输的文件
    Dim fssize(fs.Length - 1) As Byte
    Dim strread As New IO.BinaryReader(fs) '流处理要传输的文件
    'fs.Read(fssize, 0, fssize.Length - 1)
    strread.Read(fssize, 0, fssize.Length - 1)
    sendsocket.Connect(ipendpiont) '连接远程计算机
    sendsocket.Send(fssize) '发送文件
    Label1.Text = fs.Length()
    fs.Close()
    sendsocket.Shutdown(Net.Sockets.SocketShutdown.Send)
    '关闭发送连接
    sendsocket.Close() '关闭本机socket
    =======================================

    接收端:
    Dim receivesocket As New Net.Sockets.Socket(Net.Sockets.AddressFamily.InterNetwork,Net.Sockets.SocketType.Stream,Net.Sockets.ProtocolType.Tcp)
    Private Sub Form1_Load(ByVal sender As System.Object,ByVal e As System.EventArgs) Handles MyBase.Load
    Dim hostipendpiont As New Net.IPEndPoint(Net.IPAddress.Parse("127.0.0.1"), 8888)
    receivesocket.Bind(hostipendpiont)
    '建立远程计算机的的socket
    receivesocket.Listen(2) '监听socket
    End Sub

    Private Sub Button1_Click(ByVal sender As Object,ByVal e As System.EventArgs) Handles Button1.Click

    Dim recbyte(229888990) As Byte
    Dim hostsocket As Net.Sockets.Socket = receivesocket.Accept()
    '同意和发送端计算机建立连接

    hostsocket.Receive(recbyte)
    If hostsocket.Receive(recbyte) > 0.1 Then
    MsgBox("yyyyy" & hostsocket.Receive(recbyte))
    End If

    Dim recfs As New IO.FileStream("c:\wgscd2.dat", IO.FileMode.OpenOrCreate)
    '接收数据并将其保存到一个新的文件中


    Dim newfilestr As New IO.BinaryWriter(recfs) '流写
    'recfs.Write(recbyte, 0, recbyte.Length - 1)
    newfilestr.Write(recbyte, 0, recbyte.Length - 1)
    recfs.Close()
    hostsocket.Shutdown(Net.Sockets.SocketShutdown.Receive)
    hostsocket.Close()
    End Sub




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