ACE_Message_Block* message = new ACE_Message_Block("Hello, world!"); size_t length = message->length();
ACE_Message_Block* message = new ACE_Message_Block(4096); ACE_INET_Addr addr; ACE_SOCK_Stream peer; peer.accept(acceptor, &addr); peer.recv(message->wr_ptr(), message->space(), 0); message->wr_ptr(peer.gcount());This example creates a new message block with a size of 4096 and then reads data from a socket into the message block. The length of the data is set using the wr_ptr method. These examples use the ACE library, which is a package library for C++. It provides a set of reusable components for network programming, concurrency, and interprocess communication.