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/* vim:set ft=c ts=2 sw=2 sts=2 et cindent: */
/*
* Copyright 2012-2013 Michael Steinert
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/**
* An abstract socket interface.
*/
#ifndef AMQP_SOCKET_H
#define AMQP_SOCKET_H
#include "amqp_private.h"
AMQP_BEGIN_DECLS
int
amqp_os_socket_error(void);
int
amqp_os_socket_close(int sockfd);
/* Socket callbacks. */
typedef ssize_t (*amqp_socket_writev_fn)(void *, struct iovec *, int);
typedef ssize_t (*amqp_socket_send_fn)(void *, const void *, size_t);
typedef ssize_t (*amqp_socket_recv_fn)(void *, void *, size_t, int);
typedef int (*amqp_socket_open_fn)(void *, const char *, int, struct timeval *);
typedef int (*amqp_socket_close_fn)(void *);
typedef int (*amqp_socket_get_sockfd_fn)(void *);
typedef void (*amqp_socket_delete_fn)(void *);
/** V-table for amqp_socket_t */
struct amqp_socket_class_t {
amqp_socket_writev_fn writev;
amqp_socket_send_fn send;
amqp_socket_recv_fn recv;
amqp_socket_open_fn open;
amqp_socket_close_fn close;
amqp_socket_get_sockfd_fn get_sockfd;
amqp_socket_delete_fn delete;
};
/** Abstract base class for amqp_socket_t */
struct amqp_socket_t_ {
const struct amqp_socket_class_t *klass;
};
#ifdef _WIN32
/* WinSock2 calls iovec WSABUF with different parameter names.
* this is really a WSABUF with different names
*/
struct iovec {
u_long iov_len;
char FAR *iov_base;
};
#endif
/**
* Set set the socket object for a connection
*
* This assigns a socket object to the connection, closing and deleting any
* existing socket
*
* \param [in] state The connection object to add the socket to
* \param [in] socket The socket object to assign to the connection
*/
void
amqp_set_socket(amqp_connection_state_t state, amqp_socket_t *socket);
/**
* Write to a socket.
*
* This function wraps writev(2) functionality.
*
* This function will only reutrn on error, or when all of the bytes referred
* to in iov have been sent. NOTE: this function may modify the iov struct.
*
* \param [in,out] self A socket object.
* \param [in] iov One or more data vecors.
* \param [in] iovcnt The number of vectors in \e iov.
*
* \return AMQP_STATUS_OK on success. amqp_status_enum value otherwise
*/
ssize_t
amqp_socket_writev(amqp_socket_t *self, struct iovec *iov, int iovcnt);
/**
* Send a message from a socket.
*
* This function wraps send(2) functionality.
*
* This function will only return on error, or when all of the bytes in buf
* have been sent, or when an error occurs.
*
* \param [in,out] self A socket object.
* \param [in] buf A buffer to read from.
* \param [in] len The number of bytes in \e buf.
*
* \return AMQP_STATUS_OK on success. amqp_status_enum value otherwise
*/
ssize_t
amqp_socket_send(amqp_socket_t *self, const void *buf, size_t len);
/**
* Receive a message from a socket.
*
* This function wraps recv(2) functionality.
*
* \param [in,out] self A socket object.
* \param [out] buf A buffer to write to.
* \param [in] len The number of bytes at \e buf.
* \param [in] flags Receive flags, implementation specific.
*
* \return The number of bytes received, or < 0 on error (\ref amqp_status_enum)
*/
ssize_t
amqp_socket_recv(amqp_socket_t *self, void *buf, size_t len, int flags);
/**
* Close a socket connection and free resources.
*
* This function closes a socket connection and releases any resources used by
* the object. After calling this function the specified socket should no
* longer be referenced.
*
* \param [in,out] self A socket object.
*
* \return Zero upon success, non-zero otherwise.
*/
int
amqp_socket_close(amqp_socket_t *self);
/**
* Destroy a socket object
*
* \param [in] self the socket object to delete
*/
void
amqp_socket_delete(amqp_socket_t *self);
/**
* Open a socket connection.
*
* This function opens a socket connection returned from amqp_tcp_socket_new()
* or amqp_ssl_socket_new(). This function should be called after setting
* socket options and prior to assigning the socket to an AMQP connection with
* amqp_set_socket().
*
* \param [in] host Connect to this host.
* \param [in] port Connect on this remote port.
* \param [in] timeout Max allowed time to spent on opening. If NULL - run in blocking mode
*
* \return File descriptor upon success, non-zero negative error code otherwise.
*/
int
amqp_open_socket_noblock(char const *hostname, int portnumber, struct timeval *timeout);
int
amqp_queue_frame(amqp_connection_state_t state, amqp_frame_t *frame);
int
amqp_put_back_frame(amqp_connection_state_t state, amqp_frame_t *frame);
int
amqp_simple_wait_frame_on_channel(amqp_connection_state_t state,
amqp_channel_t channel,
amqp_frame_t *decoded_frame);
AMQP_END_DECLS
#endif /* AMQP_SOCKET_H */
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