我已经使这些代码发送和接收带有TCP套接字的图像,但接收代码无效,希望您能帮助我 这是发送代码使用tcp socket发送和接收图像
public void SendImage()
{
int ScreenWidth = Screen.GetBounds(new Point(0, 0)).Width;
int ScreenHeight = Screen.GetBounds(new Point(0, 0)).Height;
Bitmap bmpScreenShot = new Bitmap(ScreenWidth, ScreenHeight);
Graphics gfx = Graphics.FromImage((Image)bmpScreenShot);
gfx.CopyFromScreen(0, 0, 0, 0, new Size(ScreenWidth, ScreenHeight));
bmpScreenShot.Save(Application.StartupPath + "/ScreenShot.jpg", ImageFormat.Jpeg);
byte[] image = new byte[1];
bmpScreenShot = ResizeBitmap(bmpScreenShot, 300, 300);
image = ImageToByte(bmpScreenShot);
//get the length of image (length of bytes)
int NumberOfBytes = image.Length;
//put the size into a byte array
byte[] numberofbytesArray = BitConverter.GetBytes(NumberOfBytes);
//send the size to the Client
int sizesend = sck.Send(numberofbytesArray, 0, numberofbytesArray.Length, 0);
if (sizesend > 0)
{
MessageBox.Show("Size Sent");
}
//send the image to the Client
int imagesend =sck.Send(image, 0, NumberOfBytes, 0);
if (imagesend > 0)
{
MessageBox.Show("Image Sent");
}
}
这里是接收代码
public void ReceiveImage()
{
if (sck.Connected)
{
NetworkStream stream = new NetworkStream(sck);
byte[] data = new byte[4];
//Read The Size
stream.Read(data, 0, data.Length);
int size = IPAdress.HostToNetworkOrder(BitConverter.ToInt32(data,0));
// prepare buffer
data = new byte[size];
//Load Image
int read = 0;
while (read != data.Length)
{
read += stream.Read(data, read, data.Length - read);
}
//stream.Read(data, 0, data.Length);
//Convert Image Data To Image
MemoryStream imagestream = new MemoryStream(data);
Bitmap bmp = new Bitmap(imagestream);
pictureBox1.Image = bmp;
}
}
编辑 去除IPAdress.HostToNetworkOrder后到以下
int size = BitConverter.ToInt32(data,0);
仍然存在问题。问题是,当我发送大小,它发送5kb,但是当我收到它,我发现它接近2GB。
更进一步,我得到一个错误在这条线
read += stream.Read(data, read, data.Length - read);
以下消息
无法从传输连接读取数据。可以执行套接字操作,因为系统缺少足够的缓冲空间或队列已满。
就在您尝试执行行'data = new byte [size];'之前* size *中有什么值? – 2012-07-31 00:02:45
-1991225785是价值,但当我删除IPAdress.HostToNetworkOrder它变得积极 – 2012-07-31 00:07:02
看来你会想要相反 - 'IPAddress.NetworkToHostOrder',不是?你从网络获取它,并且需要它作为当前主机上的一个int。 – ceyko 2012-07-31 00:08:42