Winsock API Reference

WinSock BSD API	Description
accept	Returns a new socket that corresponds to an established connection from the listening socket queue.
bind	Assigns a local name to an unnamed socket.
closesocket	Removes a socket from the per-process object reference table. Only blocks if SO_LINGER is set with a nonzero time-out on a blocking socket.
connect	Initiates a connection on the specified socket.
freeaddrinfo	Frees address info returned by a call to freeaddrinfo.
getaddrinfo	Provides protocol independent translation from hostname to address.
gethostbyname	Retrieves host information corresponding to a host name from a host database on a DNS server.
gethostname	Returns an ASCII string that can be used with gethostbyname.
getnameinfo	Provides name resolution from an address to the host name.
getpeername	Retrieves the name of the peer connected to the specified socket.
getsockname	Retrieves the local address to which the specified socket is bound.
getsockopt	Retrieves options associated with the specified socket. RTX extends getsockopt with two additional options that apply at the IPPROTO_TCP level: TCP_ACKDELAYTIME The delay period (in milliseconds) that the stack uses for delayed acknowledgements (ACKs). A value of zero indicates that delayed ACKs are disabled (that is, all data segments are acknowledged immediately). Default value is 200 TCP_ACKNSEG Acknowledgement frequency, configured to every Nth maximum-sized segment (MSS). The default for N is 2. The IP_DONTFRAGMENT socket option, which is at the IPPROTO_IP level, has a default of 1 (fragmentation disabled).
htonl	Converts a 32-bit quantity from host-byte order to network-byte order.
htons	Converts a 16-bit quantity from host-byte order to network-byte order.
inet_addr	Converts a character string representing a number in the Internet standard ".'' notation to an Internet address value.
inet_ntoa	Converts an Internet address value to an ASCII string in ".'' notation i.e., "a.b.c.d''.
ioctlsocket	Provides control for sockets.
listen	Listens for incoming connections on a specified socket.
ntohl	Converts a 32-bit quantity from network-byte order to host-byte order.
ntohs	Converts a 16-bit quantity from network byte order to host byte order.
recv	Receives data from a connected or unconnected socket.
recvfrom	Receives data from either a connected or unconnected socket.
select	Performs synchronous I/O multiplexing.
send	Sends data to a connected socket.
sendto	Sends data to either a connected or unconnected socket.
setsockopt	Stores options associated with the specified socket. RTX extends setsockopt with two additional options that apply at the IPPROTO_TCP level: TCP_ACKDELAYTIME Specifies the delay period (in milliseconds) that the stack uses for delayed acknowledgements (ACKs). A value of zero disables delayed ACKs (that is, all data segments are acknowledged immediately). Default value is 200 TCP_ACKNSEG Acknowledgement frequency can be configured to every Nth maximum-sized segment (MSS) using this socket option. The default for N is 2. The IP_DONTFRAGMENT socket option, which is at the IPPROTO_IP level, has a default of 1 (fragmentation disabled).
shutdown	Shuts down part of a full-duplex connection.
socket	Creates an endpoint for communication and return a socket descriptor.
WSAAccept	Returns a new socket that corresponds to an established connection from the listening socket queue.
WSACleanup	Terminates use of the RT-TCP/IP stack within an RTSS process.
WSACloseEvent	Closes an open event object.
WSAConnect	Establishes a connection to a specified socket.
WSACreateEvent	Creates an event object internally with an initial state of nonsignaled.
WSAEventSelect	Specifies an event object to be associated with the specified set of FD_XXX network events.
WSAFDIsSet	Checks whether a socket is included in set of socket descriptors.
WSAGetlastError	Gets the status for the last Winsock operation that failed.
WSAHtonl	Converts a u_long IPv4 address in host byte order to TCP/IP network byte order.
WSAHtons	Converts a u_short IPv4 address in host byte-ordering to TCP/IP network byte order.
WSAIoctl	Performs a protocol-specific I/O control action on the socket in any state.
WSANtohl	Converts a u_long in TCP/IP network byte order to host byte order.
WSANtohs	Converts a u_short in TCP/IP network byte order to host byte order.
WSARecv	Receives data on a socket and returns the number of bytes received.
WSARecvDisconnect	Causes a socket to be closed for receiving.
WSARecvFrom	Receives a datagram on a socket and returns the number of bytes received.
WSAResetEvent	Resets the state of the specified event object to non signaled.
WSASend	Transmits a message on a connected socket.
WSASendDisconnect	Causes a socket to be closed for sending.
WSASendTo	Transmits a message on a socket.
WSASetEvent	Sets the state of the specified event object to signaled.
WSASetLastError	Sets the error code which can be retrieved by WSAGetLastError call for the current thread.
WSASocket	Creates a socket and returns an integer descriptor.
WSAStartup	Initiates the use of RT-TCP/IP by an RTSS process.