Use class CaptureFileReaderDevice

[xeron333]

I can write my captures to a file with the CaptureFileWriterDevice class. However, I'm trying to read these .pcap files. I see examples with the CaptureFileReaderDevice class. I tried this, but I got an error:
SharpPcap.PcapException*: 'Unable to open offline adapter: ' on the line

captureFileReader.Open();

private static void device_OnPacketArrival(object sender, PacketCapture e)
string path = "C:\\Users\\Documents\\Captures.pcap";
CaptureFileReaderDevice captureFileReader = new CaptureFileReaderDevice(path);
int packetsRead = 0;
GetPacketStatus retval;
while (packetsRead < packetsToRead)
{
captureFileReader.Open();
do
{
retval = captureFileReader.GetNextPacket(out e);
if (retval == GetPacketStatus.PacketRead) packetsRead++;
}
while (retval == GetPacketStatus.PacketRead);
}
var endTime = DateTime.Now;
Console.WriteLine(endTime);
}

[kayoub5]

• attach the pcap file you are trying to read
• format the code and exception as per https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/creating-and-highlighting-code-blocks
• the code provided is missing the line where the reader is created/file name provided

[xeron333]

I can't attach pcap file here

[kayoub5]

put the file in a zip and attach the zip, it should work as long as the file is less than 25MB

[xeron333]

ok here the file Thanks
Captures.zip

[xeron333]

you said : "the code provided is missing the line where the reader is created/file name provided" because i did before :
string path = "C:\\Users\\Documents\\Captures.pcap";
CaptureFileWriterDevice captureFileWriter = new CaptureFileWriterDevice(path, (FileMode.OpenOrCreate));
captureFileWriter.Open(); captureFileWriter.Write(rawPacket); captureFileWriter.Close();

[kayoub5]

Because the PCAP have only one packet

[xeron333]

and at the level of my code, do you still see an error?

[kayoub5]

Yes, you are doing Open inside the while loop, and doing two while loops inside each other

[xeron333]

ok good or not ?

[kayoub5]

I was listing the errors...