用于文件传输的C＃远程流未读取

Question

i have written a little "Update Programm" to keep an .exe up to date for the rest of my dev team. It used to work fine, but suddenly it stopped working.

I already noticed the problem: my remote stream does not start to read.

        Uri patch = new Uri("http://********/*********/" + GetVersion().ToString() + ".exe");
        Int64 patchsize = PatchSize(patch);
        var CurrentPath = String.Format("{0}\\", Environment.CurrentDirectory);
        Int64 IntSizeTotal = 0;
        Int64 IntRunning = 0;
        string strNextPatch = (version + ".exe");

        using (System.Net.WebClient client = new System.Net.WebClient())
        {
            using (System.IO.Stream streamRemote = client.OpenRead(patch))
            {
                using (System.IO.Stream streamLocal = new FileStream(CurrentPath + strNextPatch, FileMode.Create, FileAccess.Write, FileShare.None))
                {
                    int intByteSize = 0;

                    byte[] byteBuffer = new Byte[IntSizeTotal];

                    while ((intByteSize = streamRemote.Read(byteBuffer, 0, byteBuffer.Length)) > 0)
                    {
                        streamLocal.Write(byteBuffer, 0, intByteSize);

                        IntRunning += intByteSize;

                        double dIndex = (double)(IntRunning);
                        double dTotal = (double)byteBuffer.Length;
                        double dProgressPercentage = (dIndex / dTotal);
                        int intProgressPercentage = (int)(dProgressPercentage * 100);

                        worker.ReportProgress(intProgressPercentage);
                    }
                    streamLocal.Close();
                }
                streamRemote.Close();

GetVersion() only returns the current version number of the current server version of the .exe. The problem lies here:

while ((intByteSize = streamRemote.Read(byteBuffer, 0, byteBuffer.Length)) > 0)

My streamRemote just does not return any bytes so this while clause is not filled.

Any advice for me?

Answer 1

I believe the problem is on the server. I'd run some checks:

• Has anything changed on the configuration of the web server that stops you from downloading executables?
• Are you connecting through a proxy?
• Can you manually get to the same URL (under the same user credentials of your application)?