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socketpair(3socket) [sunos man page]

socketpair(3SOCKET)					     Sockets Library Functions					       socketpair(3SOCKET)

socketpair - create a pair of connected sockets SYNOPSIS
cc [ flag ... ] file ... -lsocket -lnsl [ library ... ] #include <sys/types.h> #include <sys/socket.h> int socketpair(int domain, int type, int protocol, int sv[2]); DESCRIPTION
The socketpair() library call creates an unnamed pair of connected sockets in the specified address family domain, of the specified type, that uses the optionally specified protocol. The descriptors that are used in referencing the new sockets are returned in sv[0] and sv[1]. The two sockets are indistinguishable. RETURN VALUES
socketpair() returns -1 on failure and 0 on success. ERRORS
The call succeeds unless: EAFNOSUPPORT The specified address family is not supported on this machine. EMFILE Too many descriptors are in use by this process. ENOMEM There was insufficient user memory for the operation to complete. ENOSR There were insufficient STREAMS resources for the operation to complete. EOPNOTSUPP The specified protocol does not support creation of socket pairs. EPROTONOSUPPORT The specified protocol is not supported on this machine. EACCES The process does not have appropriate privileges. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |Safe | +-----------------------------+-----------------------------+ SEE ALSO
pipe(2), read(2), write(2), socket.h(3HEAD), attributes(5) NOTES
This call is currently implemented only for the AF_UNIX address family. SunOS 5.10 10 Jan 2001 socketpair(3SOCKET)

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socketpair(2)							System Calls Manual						     socketpair(2)

socketpair - Creates a pair of connected sockets SYNOPSIS
#include <sys/socket.h> int socketpair( int domain, int type, int protocol, int socket_vector[2] ); STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: socketpair(): XNS5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. PARAMETERS
Specifies the communications domain in which the sockets are created. This function does not create sockets in the Internet domain. Speci- fies the communications method that sockets use, for example SOCK_DGRAM or SOCK_STREAM. Specifies an optional identifier used to define the communications protocols used in the transport layer interface. Specifies a two-integer array used to hold the file descriptors of the socket pair created with the call to this function. DESCRIPTION
The socketpair() function creates an unnamed pair of connected sockets in a specified domain, of a specified type, under the protocol optionally specified by the protocol parameter. The two sockets are identical. The file descriptors used in referencing the created sock- ets are returned to socket_vector[0] and socket_vector[1]. The sys/socket.h include file contains definitions for socket domains, types, and protocols. Not all protocol families support the socketpair() function. RETURN VALUES
Upon successful completion, this function returns a value of 0 (zero). Otherwise, -1 is returned and errno is specified to indicate the error. ERRORS
If the socketpair() function fails, errno may be set to one of the following values: The process have not have appropriate privileges. The addresses in the specified address family cannot be used to create this socket pair. [Tru64 UNIX] The socket_vector array is not located in a writable part of user address space. The current process has too many open file descriptors. No more file descriptors are available for the system. Insufficient resources were available in the system to complete the call. The system was unable to allocate kernel memory to increase the process descriptor table. The available STREAMS resources were insufficient for the operation to complete. The specified protocol does not permit creation of socket pairs. The specified protocol cannot be used in this system. The socket type is not supported by the protocol. RELATED INFORMATION
Functions: socket(2) Standards: standards(5) delim off socketpair(2)
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