Hi all, I need to build a data structure like this : size 4 bytes ( example 0x0000000A ) flag 1 byte ( example 0x87 ) trans 8 bytes ( example 'URTVMI1' ) F5 3 bytes ( example 0x00125C ) How can I define that structure, format it and send it via a socket ? My problem is to code / decode the message to and from the server. malan