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#ifndef PROTON_IO_H
#define PROTON_IO_H 1
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
#include <proton/import_export.h>
#include <proton/error.h>
#include <proton/type_compat.h>
#include <stddef.h>
#ifdef __cplusplus
extern "C" {
* A ::pn_socket_t provides an abstract handle to an IO stream. The
* pipe version is uni-directional. The network socket version is
* bi-directional. Both are non-blocking.
* pn_socket_t handles from ::pn_pipe() may only be used with
* ::pn_read(), ::pn_write(), ::pn_close() and pn_selector_select().
* pn_socket_t handles from ::pn_listen(), ::pn_accept() and
* ::pn_connect() must perform further IO using Proton functions.
* Mixing Proton io.h functions with native IO functions on the same
* handles will result in undefined behavior.
* pn_socket_t handles may only be used with a single pn_io_t during
* their lifetime.
#if defined(_WIN32) && ! defined(__CYGWIN__)
#ifdef _WIN64
typedef unsigned __int64 pn_socket_t;
typedef unsigned int pn_socket_t;
#define PN_INVALID_SOCKET (pn_socket_t)(~0)
typedef int pn_socket_t;
#define PN_INVALID_SOCKET (-1)
* A ::pn_io_t manages IO for a group of pn_socket_t handles. A
* pn_io_t object may have zero or one pn_selector_t selectors
* associated with it (see ::pn_io_selector()). If one is associated,
* all the pn_socket_t handles managed by a pn_io_t must use that
* pn_selector_t instance.
* The pn_io_t interface is single-threaded. All methods are intended
* to be used by one thread at a time, except that multiple threads
* may use:
* ::pn_write()
* ::pn_send()
* ::pn_recv()
* ::pn_close()
* ::pn_selector_select()
* provided at most one thread is calling ::pn_selector_select() and
* the other threads are operating on separate pn_socket_t handles.
typedef struct pn_io_t pn_io_t;
* A ::pn_selector_t provides a selection mechanism that allows
* efficient monitoring of a large number of Proton connections and
* listeners.
* External (non-Proton) sockets may also be monitored, either solely
* for event notification (read, write, and timer) or event
* notification and use with pn_io_t interfaces.
typedef struct pn_selector_t pn_selector_t;
PN_EXTERN pn_io_t *pn_io(void);
PN_EXTERN void pn_io_free(pn_io_t *io);
PN_EXTERN pn_error_t *pn_io_error(pn_io_t *io);
PN_EXTERN pn_socket_t pn_connect(pn_io_t *io, const char *host, const char *port);
PN_EXTERN pn_socket_t pn_listen(pn_io_t *io, const char *host, const char *port);
PN_EXTERN pn_socket_t pn_accept(pn_io_t *io, pn_socket_t socket, char *name, size_t size);
PN_EXTERN void pn_close(pn_io_t *io, pn_socket_t socket);
PN_EXTERN ssize_t pn_send(pn_io_t *io, pn_socket_t socket, const void *buf, size_t size);
PN_EXTERN ssize_t pn_recv(pn_io_t *io, pn_socket_t socket, void *buf, size_t size);
PN_EXTERN int pn_pipe(pn_io_t *io, pn_socket_t *dest);
PN_EXTERN ssize_t pn_read(pn_io_t *io, pn_socket_t socket, void *buf, size_t size);
PN_EXTERN ssize_t pn_write(pn_io_t *io, pn_socket_t socket, const void *buf, size_t size);
PN_EXTERN bool pn_wouldblock(pn_io_t *io);
PN_EXTERN pn_selector_t *pn_io_selector(pn_io_t *io);
#ifdef __cplusplus
#endif /* io.h */