How to send 0x80 byte to a tcp port using netcat or similar tool

Try using ncat, I'm fairly certain it can do this. http://nmap.org/ncat/

Perhaps as a file transfer? http://nmap.org/ncat/guide/ncat-file-transfer.html

It has a --hex-dump option so you can see whats really going on.

You could also just compile a simple program to output exactly what you want and use netcat to call that and transfer its output.

For this reason I always use mysqldump --hex-blob.

Re-dump the database encoding the blobs using this switch and it will work.

You can try to import it using a windows mysql client IDE like sqlyog or mysql administrator. It worked for me once.