ChorusOS 5.0 Features and Architecture Overview

POSIX Sockets (`POSIX_SOCKETS`)

The POSIX_SOCKETS feature provides POSIX-compatible socket system calls. For general information on this feature, see the POSIX draft standard P1003.1g. The POSIX_SOCKETS provides support for the AF_LOCAL, AF_INET, AF_INET6, and AF_ROUTE domains. The AF_UNIX domain is only supported when the AF_LOCAL feature is present. The AF_INET6 domain is only supported when the IPv6 feature is present.

POSIX Sockets API

The POSIX_SOCKETS feature API is summarized in the following table. Some of the calls listed are also included in other features:

Function	Description
`accept()`	Accept a connection on a socket
`bind()`	Bind a name to a socket
`close()`	Close a file descriptor
`connect()`	Initiate a connection on a socket
`dup()`	Duplicate an open file descriptor
`dup2()`	Duplicate an open file descriptor
`fcntl()`	File control
`getpeername()`	Get name of connected peer
`getsockname()`	Get socket name
`setsockopt()`	Set options on sockets
`getsockopt()`	Get options on sockets
`ioctl()`	Device control
`listen()`	Listen for connections on a socket
`read()`	Read from a socket
`recv()`	Receive a message from a socket
`recvfrom()`	Receive a message from a socket
`recvmsg()`	Receive a message from a socket
`select()`	Synchronous I/O multiplexing
`send()`	Send a message from a socket
`sendto()`	Send a message from a socket.
`sendmsg()`	Send a message from a socket
`shutdown()`	Shut down part of a full-duplex connection
`socket()`	Create an endpoint for communication
`socketpair()`	Create a pair of connected sockets
`write()`	Write on a socket

POSIX Sockets (POSIX_SOCKETS)

POSIX Sockets API

POSIX Sockets (`POSIX_SOCKETS`)