public void SendFile(object state)
{
IPEndPoint ipSend = (IPEndPoint)state;
Socket SendFile = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);//初始化套接字：寻址方案，以字符流方式和tcp通信
SendFile.Connect(ipSend);
string filePathName = fileDlg.FileName;
string msg = "FILE";
SendFile.Send(Encoding.Unicode.GetBytes(msg));
string fileNameWithExtension = filePathName.Substring(filePathName.LastIndexOf('\\') + 1);//filePathName 为不带路径的，eg. D://hello//hub.txt||fileNameWithExtension 为不带路径的，eg. hub.txt
byte[] filenamehead = FileNameHead.GetBytes(fileNameWithExtension);
SendFile.Send(filenamehead);
FileStream read = new FileStream(fileDlg.FileName, FileMode.Open, FileAccess.Read);
byte[] buff = new byte[1024];
int len = 0;
while ((len = read.Read(buff, 0, 1024)) != 0)
{
if (SendFile.Connected)
{
SendFile.Send(buff, 0, len, SocketFlags.None);
}
}
SendFile.Close();
read.Close();
s = new Detail
{
DetMac = DBMac,
DetSpeak = DBSpeakName,
DetType = 1,
DetCont = filePathName,
DetRead = 0,
};
IntoDB.AddDetail(s);
}
public void StartChat()
{
//获取远程主机的IP地址和端口号
ep = (IPEndPoint)chat.RemoteEndPoint;
ghost = userlist.Find(tmp => //tmp是变量，代表的是userlist中元素
{
if (tmp.u_ip.Equals(ep.Address))
{
return(true);
}
return(false);
});
//设置缓冲区
byte[] buff = new byte[1024];
int len;
string fileName = null; //保存文件的文件名
string ExtensionOfFile = null;
int fileNameByteLength = 8; //保存文件的文件名的byte数长
while ((len = chat.Receive(buff)) != 0)
{
string msg = Encoding.Unicode.GetString(buff, 0, len);
string cmd = msg.Substring(0, 4);
//System.Windows.Forms.MessageBox.Show(cmd);
if (cmd == "FILE")
{
DialogResult res = System.Windows.Forms.MessageBox.Show(ghost.u_name + "向你发送文件？", "发送文件", MessageBoxButtons.YesNo);
if (DialogResult.Yes == res)
{
fileNameByteLength = FileNameHead.GetFileNameByteLength(buff);
fileName = FileNameHead.GetFileName(buff, fileNameByteLength);
ExtensionOfFile = fileName.Substring(fileName.LastIndexOf('.'));//得到文件名的扩展名
SaveFileDialog saveFileDialog = new SaveFileDialog();
saveFileDialog.Title = "文件保存在";
saveFileDialog.Filter = "文件(*" + ExtensionOfFile + ")|*" + ExtensionOfFile + "";
saveFileDialog.FileName = fileName.Replace(ExtensionOfFile, "");
//saveFileDialog.InitialDirectory = @"D:\";//设置保存控件打开后，默认目录
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
if (saveFileDialog.FileName != "")
{
fileName = saveFileDialog.FileName;
SaveFile(fileName, buff, 12 + fileNameByteLength, ref len);
}
}
else
{
while ((len = chat.Receive(buff)) != 0)
{
}
}
}
else
{
System.Windows.Forms.MessageBox.Show("已取消文件");
while ((len = chat.Receive(buff)) != 0)
{
}
}
chat.Close();
break;
}
else if (cmd == "MESS")
{
string content = msg.Replace("MESS", "");
//System.Windows.MessageBox.Show(content);
s = new Detail
{
DetMac = ghost.MacAdd,
DetSpeak = ghost.u_name,
DetType = 0,
DetCont = content,
DetRead = 0,
};
IntoDB.AddDetail(s);
chat.Close();
break;
}
else if (cmd == "PICT")
{
//1、确认pic文件夹的存在
string path = Environment.CurrentDirectory + "\\pic";
if (!Directory.Exists(path))
{
DirectoryInfo directoryInfo = new DirectoryInfo(path);
directoryInfo.Create();
}
//2、设置文件名
fileName = path + "\\" + DateTime.Now.ToFileTime().ToString() + ".png";
//3、接收图片
FileStream FileWirter = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Write);
FileWirter.Write(buff, 8, len - 8);//此方法返回时包含指定的字节数组，数组中 offset 和 (offset +count -1) 之间的值被从当前源中读取的字节替换。
while (chat.Connected)
{
len = chat.Receive(buff);
if (len != 0)
{
FileWirter.Write(buff, 0, len);
}
else
{
break;
}
}
FileWirter.Close();
//4、收发图片的信息插入数据库！！！！！！
s = new Detail
{
DetMac = ghost.MacAdd,
DetSpeak = ghost.u_name,
DetType = 2,
DetCont = fileName,
DetRead = 0,
};
IntoDB.AddDetail(s);
chat.Close();
break;
}
}
}