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| IPC_CONNECT(3) | libdill Library Functions | IPC_CONNECT(3) |
NAME
ipc_connect - creates a connection to remote IPC endpointSYNOPSIS
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#include <libdill.h> int ipc_connect( const char* addr, int64_t deadline);
DESCRIPTION
IPC protocol is a bytestream protocol for transporting data among processes on the same machine. It is an equivalent to POSIX AF_LOCAL sockets.This function creates a connection to a remote IPC endpoint.
addr: Filename to connect to.
deadline: A point in time when the operation should time out, in milliseconds. Use the now function to get your current point in time. 0 means immediate timeout, i.e., perform the operation if possible or return without blocking if not. -1 means no deadline, i.e., the call will block forever if the operation cannot be performed.
The socket can be cleanly shut down using ipc_close function.
This function is not available if libdill is compiled with --disable-sockets option.
RETURN VALUE
In case of success the function returns newly created socket handle. In case of error it returns -1 and sets errno to one of the values below.ERRORS
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- EACCES: The process does not have appropriate privileges.
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- ECANCELED: Current coroutine was canceled.
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- ECONNREFUSED: The target address was not listening for connections or refused the connection request.
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- ECONNRESET: Remote host reset the connection request.
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- EINVAL: Invalid argument.
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- ELOOP: A loop exists in symbolic links encountered during resolution of the pathname in address.
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- EMFILE: The maximum number of file descriptors in the process are already open.
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- ENAMETOOLONG: A component of a pathname exceeded NAME_MAX characters, or an entire pathname exceeded PATH_MAX characters.
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- ENFILE: The maximum number of file descriptors in the system are already open.
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- ENOENT: A component of the pathname does not name an existing file or the pathname is an empty string.
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- ENOMEM: Not enough memory.
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- ENOTDIR: A component of the path prefix of the pathname in address is not a directory.
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- ETIMEDOUT: Deadline was reached.
EXAMPLE
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int s = ipc_connect("/tmp/test.ipc", -1); bsend(s, "ABC", 3, -1); char buf[3]; brecv(s, buf, sizeof(buf), -1); ipc_close(s);
SEE ALSO
brecv(3) brecvl(3) bsend(3) bsendl(3) hclose(3) ipc_accept(3) ipc_accept_mem(3) ipc_close(3) ipc_connect_mem(3) ipc_done(3) ipc_fromfd(3) ipc_fromfd_mem(3) ipc_listen(3) ipc_listen_mem(3) ipc_listener_fromfd(3) ipc_listener_fromfd_mem(3) ipc_pair(3) ipc_pair_mem(3) now(3)| libdill |
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