Once I catch the IP packet in LAN, how can I extract the QoS (all 8 bits) field from that?

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Khaled Salah

Try using Wireshark tool. It has a good way of displaying QoS bits.

Karimkhan Pathan

Sir I want develop my own tool..

Andrea Zanella

Odd chars are probably due to the fact that some wordcode is not printable in ASCII characters. You should check out the log file and map non printable codes in printable ones.

yeah ok, actually I am storing it into Byte datatype buffer, and then converting it into string using tostring function, dont know how to map this data stored in Byte buffer to binary form...

Kashif Bilal

Are you using PCap ?? there are many wrappers liberaries for PCap like JPCap (Java), SharpPCap (.Net)

I am using JPCap...

I have used SharpPcap, and there are different wrapper function for decapsulating the received packet, that would also be available in JPcap. Just get the related header and get the filed of header, and then typecast in your required field.