In message <5b5157dd- ca70-4c6d-8adb-8a4d322fbd4a at x31g2000prc.googlegroups.com>, akineko wrote: > The length of the message is unknown to the read side. I think you want a message-based, not a stream-based, IPC mechanism. Look at the docs on msgctl, msgget, msgop and so on.