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D-Modem/pjproject-2.11.1/pjlib/include/pj/sock.h

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2021-10-30 02:41:03 +08:00
/* $Id$ */
/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PJ_SOCK_H__
#define __PJ_SOCK_H__
/**
* @file sock.h
* @brief Socket Abstraction.
*/
#include <pj/types.h>
#include <pj/compat/socket.h>
PJ_BEGIN_DECL
/**
* @defgroup PJ_SOCK Socket Abstraction
* @ingroup PJ_IO
* @{
*
* The PJLIB socket abstraction layer is a thin and very portable abstraction
* for socket API. It provides API similar to BSD socket API. The abstraction
* is needed because BSD socket API is not always available on all platforms,
* therefore it wouldn't be possible to create a trully portable network
* programs unless we provide such abstraction.
*
* Applications can use this API directly in their application, just
* as they would when using traditional BSD socket API, provided they
* call #pj_init() first.
*
* \section pj_sock_examples_sec Examples
*
* For some examples on how to use the socket API, please see:
*
* - \ref page_pjlib_sock_test
* - \ref page_pjlib_select_test
* - \ref page_pjlib_sock_perf_test
*/
/**
* Supported address families.
* APPLICATION MUST USE THESE VALUES INSTEAD OF NORMAL AF_*, BECAUSE
* THE LIBRARY WILL DO TRANSLATION TO THE NATIVE VALUE.
*/
/** Address family is unspecified. @see pj_AF_UNSPEC() */
extern const pj_uint16_t PJ_AF_UNSPEC;
/** Unix domain socket. @see pj_AF_UNIX() */
extern const pj_uint16_t PJ_AF_UNIX;
/** POSIX name for AF_UNIX */
#define PJ_AF_LOCAL PJ_AF_UNIX;
/** Internet IP protocol. @see pj_AF_INET() */
extern const pj_uint16_t PJ_AF_INET;
/** IP version 6. @see pj_AF_INET6() */
extern const pj_uint16_t PJ_AF_INET6;
/** Packet family. @see pj_AF_PACKET() */
extern const pj_uint16_t PJ_AF_PACKET;
/** IRDA sockets. @see pj_AF_IRDA() */
extern const pj_uint16_t PJ_AF_IRDA;
/*
* Accessor functions for various address family constants. These
* functions are provided because Symbian doesn't allow exporting
* global variables from a DLL.
*/
#if defined(PJ_DLL)
/** Get #PJ_AF_UNSPEC value */
PJ_DECL(pj_uint16_t) pj_AF_UNSPEC(void);
/** Get #PJ_AF_UNIX value. */
PJ_DECL(pj_uint16_t) pj_AF_UNIX(void);
/** Get #PJ_AF_INET value. */
PJ_DECL(pj_uint16_t) pj_AF_INET(void);
/** Get #PJ_AF_INET6 value. */
PJ_DECL(pj_uint16_t) pj_AF_INET6(void);
/** Get #PJ_AF_PACKET value. */
PJ_DECL(pj_uint16_t) pj_AF_PACKET(void);
/** Get #PJ_AF_IRDA value. */
PJ_DECL(pj_uint16_t) pj_AF_IRDA(void);
#else
/* When pjlib is not built as DLL, these accessor functions are
* simply a macro to get their constants
*/
/** Get #PJ_AF_UNSPEC value */
# define pj_AF_UNSPEC() PJ_AF_UNSPEC
/** Get #PJ_AF_UNIX value. */
# define pj_AF_UNIX() PJ_AF_UNIX
/** Get #PJ_AF_INET value. */
# define pj_AF_INET() PJ_AF_INET
/** Get #PJ_AF_INET6 value. */
# define pj_AF_INET6() PJ_AF_INET6
/** Get #PJ_AF_PACKET value. */
# define pj_AF_PACKET() PJ_AF_PACKET
/** Get #PJ_AF_IRDA value. */
# define pj_AF_IRDA() PJ_AF_IRDA
#endif
/**
* Supported types of sockets.
* APPLICATION MUST USE THESE VALUES INSTEAD OF NORMAL SOCK_*, BECAUSE
* THE LIBRARY WILL TRANSLATE THE VALUE TO THE NATIVE VALUE.
*/
/** Sequenced, reliable, connection-based byte streams.
* @see pj_SOCK_STREAM() */
extern const pj_uint16_t PJ_SOCK_STREAM;
/** Connectionless, unreliable datagrams of fixed maximum lengths.
* @see pj_SOCK_DGRAM() */
extern const pj_uint16_t PJ_SOCK_DGRAM;
/** Raw protocol interface. @see pj_SOCK_RAW() */
extern const pj_uint16_t PJ_SOCK_RAW;
/** Reliably-delivered messages. @see pj_SOCK_RDM() */
extern const pj_uint16_t PJ_SOCK_RDM;
/*
* Accessor functions for various constants. These functions are provided
* because Symbian doesn't allow exporting global variables from a DLL.
*/
#if defined(PJ_DLL)
/** Get #PJ_SOCK_STREAM constant */
PJ_DECL(int) pj_SOCK_STREAM(void);
/** Get #PJ_SOCK_DGRAM constant */
PJ_DECL(int) pj_SOCK_DGRAM(void);
/** Get #PJ_SOCK_RAW constant */
PJ_DECL(int) pj_SOCK_RAW(void);
/** Get #PJ_SOCK_RDM constant */
PJ_DECL(int) pj_SOCK_RDM(void);
#else
/** Get #PJ_SOCK_STREAM constant */
# define pj_SOCK_STREAM() PJ_SOCK_STREAM
/** Get #PJ_SOCK_DGRAM constant */
# define pj_SOCK_DGRAM() PJ_SOCK_DGRAM
/** Get #PJ_SOCK_RAW constant */
# define pj_SOCK_RAW() PJ_SOCK_RAW
/** Get #PJ_SOCK_RDM constant */
# define pj_SOCK_RDM() PJ_SOCK_RDM
#endif
/**
* Socket level specified in #pj_sock_setsockopt() or #pj_sock_getsockopt().
* APPLICATION MUST USE THESE VALUES INSTEAD OF NORMAL SOL_*, BECAUSE
* THE LIBRARY WILL TRANSLATE THE VALUE TO THE NATIVE VALUE.
*/
/** Socket level. @see pj_SOL_SOCKET() */
extern const pj_uint16_t PJ_SOL_SOCKET;
/** IP level. @see pj_SOL_IP() */
extern const pj_uint16_t PJ_SOL_IP;
/** TCP level. @see pj_SOL_TCP() */
extern const pj_uint16_t PJ_SOL_TCP;
/** UDP level. @see pj_SOL_UDP() */
extern const pj_uint16_t PJ_SOL_UDP;
/** IP version 6. @see pj_SOL_IPV6() */
extern const pj_uint16_t PJ_SOL_IPV6;
/*
* Accessor functions for various constants. These functions are provided
* because Symbian doesn't allow exporting global variables from a DLL.
*/
#if defined(PJ_DLL)
/** Get #PJ_SOL_SOCKET constant */
PJ_DECL(pj_uint16_t) pj_SOL_SOCKET(void);
/** Get #PJ_SOL_IP constant */
PJ_DECL(pj_uint16_t) pj_SOL_IP(void);
/** Get #PJ_SOL_TCP constant */
PJ_DECL(pj_uint16_t) pj_SOL_TCP(void);
/** Get #PJ_SOL_UDP constant */
PJ_DECL(pj_uint16_t) pj_SOL_UDP(void);
/** Get #PJ_SOL_IPV6 constant */
PJ_DECL(pj_uint16_t) pj_SOL_IPV6(void);
#else
/** Get #PJ_SOL_SOCKET constant */
# define pj_SOL_SOCKET() PJ_SOL_SOCKET
/** Get #PJ_SOL_IP constant */
# define pj_SOL_IP() PJ_SOL_IP
/** Get #PJ_SOL_TCP constant */
# define pj_SOL_TCP() PJ_SOL_TCP
/** Get #PJ_SOL_UDP constant */
# define pj_SOL_UDP() PJ_SOL_UDP
/** Get #PJ_SOL_IPV6 constant */
# define pj_SOL_IPV6() PJ_SOL_IPV6
#endif
/* IP_TOS
*
* Note:
* TOS CURRENTLY DOES NOT WORK IN Windows 2000 and above!
* See http://support.microsoft.com/kb/248611
*/
/** IP_TOS optname in setsockopt(). @see pj_IP_TOS() */
extern const pj_uint16_t PJ_IP_TOS;
/*
* IP TOS related constats.
*
* Note:
* TOS CURRENTLY DOES NOT WORK IN Windows 2000 and above!
* See http://support.microsoft.com/kb/248611
*/
/** Minimize delays. @see pj_IPTOS_LOWDELAY() */
extern const pj_uint16_t PJ_IPTOS_LOWDELAY;
/** Optimize throughput. @see pj_IPTOS_THROUGHPUT() */
extern const pj_uint16_t PJ_IPTOS_THROUGHPUT;
/** Optimize for reliability. @see pj_IPTOS_RELIABILITY() */
extern const pj_uint16_t PJ_IPTOS_RELIABILITY;
/** "filler data" where slow transmission does't matter.
* @see pj_IPTOS_MINCOST() */
extern const pj_uint16_t PJ_IPTOS_MINCOST;
#if defined(PJ_DLL)
/** Get #PJ_IP_TOS constant */
PJ_DECL(int) pj_IP_TOS(void);
/** Get #PJ_IPTOS_LOWDELAY constant */
PJ_DECL(int) pj_IPTOS_LOWDELAY(void);
/** Get #PJ_IPTOS_THROUGHPUT constant */
PJ_DECL(int) pj_IPTOS_THROUGHPUT(void);
/** Get #PJ_IPTOS_RELIABILITY constant */
PJ_DECL(int) pj_IPTOS_RELIABILITY(void);
/** Get #PJ_IPTOS_MINCOST constant */
PJ_DECL(int) pj_IPTOS_MINCOST(void);
#else
/** Get #PJ_IP_TOS constant */
# define pj_IP_TOS() PJ_IP_TOS
/** Get #PJ_IPTOS_LOWDELAY constant */
# define pj_IPTOS_LOWDELAY() PJ_IP_TOS_LOWDELAY
/** Get #PJ_IPTOS_THROUGHPUT constant */
# define pj_IPTOS_THROUGHPUT() PJ_IP_TOS_THROUGHPUT
/** Get #PJ_IPTOS_RELIABILITY constant */
# define pj_IPTOS_RELIABILITY() PJ_IP_TOS_RELIABILITY
/** Get #PJ_IPTOS_MINCOST constant */
# define pj_IPTOS_MINCOST() PJ_IP_TOS_MINCOST
#endif
/** IPV6_TCLASS optname in setsockopt(). @see pj_IPV6_TCLASS() */
extern const pj_uint16_t PJ_IPV6_TCLASS;
#if defined(PJ_DLL)
/** Get #PJ_IPV6_TCLASS constant */
PJ_DECL(int) pj_IPV6_TCLASS(void);
#else
/** Get #PJ_IPV6_TCLASS constant */
# define pj_IPV6_TCLASS() PJ_IPV6_TCLASS
#endif
/**
* Values to be specified as \c optname when calling #pj_sock_setsockopt()
* or #pj_sock_getsockopt().
*/
/** Socket type. @see pj_SO_TYPE() */
extern const pj_uint16_t PJ_SO_TYPE;
/** Buffer size for receive. @see pj_SO_RCVBUF() */
extern const pj_uint16_t PJ_SO_RCVBUF;
/** Buffer size for send. @see pj_SO_SNDBUF() */
extern const pj_uint16_t PJ_SO_SNDBUF;
/** Disables the Nagle algorithm for send coalescing. @see pj_TCP_NODELAY */
extern const pj_uint16_t PJ_TCP_NODELAY;
/** Allows the socket to be bound to an address that is already in use.
* @see pj_SO_REUSEADDR */
extern const pj_uint16_t PJ_SO_REUSEADDR;
/** Do not generate SIGPIPE. @see pj_SO_NOSIGPIPE */
extern const pj_uint16_t PJ_SO_NOSIGPIPE;
/** Set the protocol-defined priority for all packets to be sent on socket.
*/
extern const pj_uint16_t PJ_SO_PRIORITY;
/** IP multicast interface. @see pj_IP_MULTICAST_IF() */
extern const pj_uint16_t PJ_IP_MULTICAST_IF;
/** IP multicast ttl. @see pj_IP_MULTICAST_TTL() */
extern const pj_uint16_t PJ_IP_MULTICAST_TTL;
/** IP multicast loopback. @see pj_IP_MULTICAST_LOOP() */
extern const pj_uint16_t PJ_IP_MULTICAST_LOOP;
/** Add an IP group membership. @see pj_IP_ADD_MEMBERSHIP() */
extern const pj_uint16_t PJ_IP_ADD_MEMBERSHIP;
/** Drop an IP group membership. @see pj_IP_DROP_MEMBERSHIP() */
extern const pj_uint16_t PJ_IP_DROP_MEMBERSHIP;
#if defined(PJ_DLL)
/** Get #PJ_SO_TYPE constant */
PJ_DECL(pj_uint16_t) pj_SO_TYPE(void);
/** Get #PJ_SO_RCVBUF constant */
PJ_DECL(pj_uint16_t) pj_SO_RCVBUF(void);
/** Get #PJ_SO_SNDBUF constant */
PJ_DECL(pj_uint16_t) pj_SO_SNDBUF(void);
/** Get #PJ_TCP_NODELAY constant */
PJ_DECL(pj_uint16_t) pj_TCP_NODELAY(void);
/** Get #PJ_SO_REUSEADDR constant */
PJ_DECL(pj_uint16_t) pj_SO_REUSEADDR(void);
/** Get #PJ_SO_NOSIGPIPE constant */
PJ_DECL(pj_uint16_t) pj_SO_NOSIGPIPE(void);
/** Get #PJ_SO_PRIORITY constant */
PJ_DECL(pj_uint16_t) pj_SO_PRIORITY(void);
/** Get #PJ_IP_MULTICAST_IF constant */
PJ_DECL(pj_uint16_t) pj_IP_MULTICAST_IF(void);
/** Get #PJ_IP_MULTICAST_TTL constant */
PJ_DECL(pj_uint16_t) pj_IP_MULTICAST_TTL(void);
/** Get #PJ_IP_MULTICAST_LOOP constant */
PJ_DECL(pj_uint16_t) pj_IP_MULTICAST_LOOP(void);
/** Get #PJ_IP_ADD_MEMBERSHIP constant */
PJ_DECL(pj_uint16_t) pj_IP_ADD_MEMBERSHIP(void);
/** Get #PJ_IP_DROP_MEMBERSHIP constant */
PJ_DECL(pj_uint16_t) pj_IP_DROP_MEMBERSHIP(void);
#else
/** Get #PJ_SO_TYPE constant */
# define pj_SO_TYPE() PJ_SO_TYPE
/** Get #PJ_SO_RCVBUF constant */
# define pj_SO_RCVBUF() PJ_SO_RCVBUF
/** Get #PJ_SO_SNDBUF constant */
# define pj_SO_SNDBUF() PJ_SO_SNDBUF
/** Get #PJ_TCP_NODELAY constant */
# define pj_TCP_NODELAY() PJ_TCP_NODELAY
/** Get #PJ_SO_REUSEADDR constant */
# define pj_SO_REUSEADDR() PJ_SO_REUSEADDR
/** Get #PJ_SO_NOSIGPIPE constant */
# define pj_SO_NOSIGPIPE() PJ_SO_NOSIGPIPE
/** Get #PJ_SO_PRIORITY constant */
# define pj_SO_PRIORITY() PJ_SO_PRIORITY
/** Get #PJ_IP_MULTICAST_IF constant */
# define pj_IP_MULTICAST_IF() PJ_IP_MULTICAST_IF
/** Get #PJ_IP_MULTICAST_TTL constant */
# define pj_IP_MULTICAST_TTL() PJ_IP_MULTICAST_TTL
/** Get #PJ_IP_MULTICAST_LOOP constant */
# define pj_IP_MULTICAST_LOOP() PJ_IP_MULTICAST_LOOP
/** Get #PJ_IP_ADD_MEMBERSHIP constant */
# define pj_IP_ADD_MEMBERSHIP() PJ_IP_ADD_MEMBERSHIP
/** Get #PJ_IP_DROP_MEMBERSHIP constant */
# define pj_IP_DROP_MEMBERSHIP() PJ_IP_DROP_MEMBERSHIP
#endif
/*
* Flags to be specified in #pj_sock_recv, #pj_sock_send, etc.
*/
/** Out-of-band messages. @see pj_MSG_OOB() */
extern const int PJ_MSG_OOB;
/** Peek, don't remove from buffer. @see pj_MSG_PEEK() */
extern const int PJ_MSG_PEEK;
/** Don't route. @see pj_MSG_DONTROUTE() */
extern const int PJ_MSG_DONTROUTE;
#if defined(PJ_DLL)
/** Get #PJ_MSG_OOB constant */
PJ_DECL(int) pj_MSG_OOB(void);
/** Get #PJ_MSG_PEEK constant */
PJ_DECL(int) pj_MSG_PEEK(void);
/** Get #PJ_MSG_DONTROUTE constant */
PJ_DECL(int) pj_MSG_DONTROUTE(void);
#else
/** Get #PJ_MSG_OOB constant */
# define pj_MSG_OOB() PJ_MSG_OOB
/** Get #PJ_MSG_PEEK constant */
# define pj_MSG_PEEK() PJ_MSG_PEEK
/** Get #PJ_MSG_DONTROUTE constant */
# define pj_MSG_DONTROUTE() PJ_MSG_DONTROUTE
#endif
/**
* Flag to be specified in #pj_sock_shutdown().
*/
typedef enum pj_socket_sd_type
{
PJ_SD_RECEIVE = 0, /**< No more receive. */
PJ_SHUT_RD = 0, /**< Alias for SD_RECEIVE. */
PJ_SD_SEND = 1, /**< No more sending. */
PJ_SHUT_WR = 1, /**< Alias for SD_SEND. */
PJ_SD_BOTH = 2, /**< No more send and receive. */
PJ_SHUT_RDWR = 2 /**< Alias for SD_BOTH. */
} pj_socket_sd_type;
/** Address to accept any incoming messages. */
#define PJ_INADDR_ANY ((pj_uint32_t)0)
/** Address indicating an error return */
#define PJ_INADDR_NONE ((pj_uint32_t)0xffffffff)
/** Address to send to all hosts. */
#define PJ_INADDR_BROADCAST ((pj_uint32_t)0xffffffff)
/**
* Maximum length specifiable by #pj_sock_listen().
* If the build system doesn't override this value, then the lowest
* denominator (five, in Win32 systems) will be used.
*/
#if !defined(PJ_SOMAXCONN)
# define PJ_SOMAXCONN 5
#endif
/**
* Constant for invalid socket returned by #pj_sock_socket() and
* #pj_sock_accept().
*/
#define PJ_INVALID_SOCKET (-1)
/* Undefining UNIX standard library macro such as s_addr is not
* recommended as it may cause build issues for anyone who uses
* the macro. See #2311 for more details.
*/
#if 0
/* Must undefine s_addr because of pj_in_addr below */
#undef s_addr
/**
* This structure describes Internet address.
*/
typedef struct pj_in_addr
{
pj_uint32_t s_addr; /**< The 32bit IP address. */
} pj_in_addr;
#else
typedef struct in_addr pj_in_addr;
#endif
/**
* Maximum length of text representation of an IPv4 address.
*/
#define PJ_INET_ADDRSTRLEN 16
/**
* Maximum length of text representation of an IPv6 address.
*/
#define PJ_INET6_ADDRSTRLEN 46
/**
* The size of sin_zero field in pj_sockaddr_in structure. Most OSes
* use 8, but others such as the BSD TCP/IP stack in eCos uses 24.
*/
#ifndef PJ_SOCKADDR_IN_SIN_ZERO_LEN
# define PJ_SOCKADDR_IN_SIN_ZERO_LEN 8
#endif
/**
* This structure describes Internet socket address.
* If PJ_SOCKADDR_HAS_LEN is not zero, then sin_zero_len member is added
* to this struct. As far the application is concerned, the value of
* this member will always be zero. Internally, PJLIB may modify the value
* before calling OS socket API, and reset the value back to zero before
* returning the struct to application.
*/
struct pj_sockaddr_in
{
#if defined(PJ_SOCKADDR_HAS_LEN) && PJ_SOCKADDR_HAS_LEN!=0
pj_uint8_t sin_zero_len; /**< Just ignore this. */
pj_uint8_t sin_family; /**< Address family. */
#else
pj_uint16_t sin_family; /**< Address family. */
#endif
pj_uint16_t sin_port; /**< Transport layer port number. */
pj_in_addr sin_addr; /**< IP address. */
char sin_zero_pad[PJ_SOCKADDR_IN_SIN_ZERO_LEN]; /**< Padding.*/
};
/* Undefining C standard library macro such as s6_addr is not
* recommended as it may cause build issues for anyone who uses
* the macro. See #2311 for more details.
*/
#if 0
#undef s6_addr
/**
* This structure describes IPv6 address.
*/
typedef union pj_in6_addr
{
/* This is the main entry */
pj_uint8_t s6_addr[16]; /**< 8-bit array */
/* While these are used for proper alignment */
pj_uint32_t u6_addr32[4];
/* Do not use this with Winsock2, as this will align pj_sockaddr_in6
* to 64-bit boundary and Winsock2 doesn't like it!
* Update 26/04/2010:
* This is now disabled, see http://trac.pjsip.org/repos/ticket/1058
*/
#if 0 && defined(PJ_HAS_INT64) && PJ_HAS_INT64!=0 && \
(!defined(PJ_WIN32) || PJ_WIN32==0)
pj_int64_t u6_addr64[2];
#endif
} pj_in6_addr;
#else
typedef struct in6_addr pj_in6_addr;
#endif
/** Initializer value for pj_in6_addr. */
#define PJ_IN6ADDR_ANY_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
/** Initializer value for pj_in6_addr. */
#define PJ_IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }
/**
* This structure describes IPv6 socket address.
* If PJ_SOCKADDR_HAS_LEN is not zero, then sin_zero_len member is added
* to this struct. As far the application is concerned, the value of
* this member will always be zero. Internally, PJLIB may modify the value
* before calling OS socket API, and reset the value back to zero before
* returning the struct to application.
*/
typedef struct pj_sockaddr_in6
{
#if defined(PJ_SOCKADDR_HAS_LEN) && PJ_SOCKADDR_HAS_LEN!=0
pj_uint8_t sin6_zero_len; /**< Just ignore this. */
pj_uint8_t sin6_family; /**< Address family. */
#else
pj_uint16_t sin6_family; /**< Address family */
#endif
pj_uint16_t sin6_port; /**< Transport layer port number. */
pj_uint32_t sin6_flowinfo; /**< IPv6 flow information */
pj_in6_addr sin6_addr; /**< IPv6 address. */
pj_uint32_t sin6_scope_id; /**< Set of interfaces for a scope */
} pj_sockaddr_in6;
/**
* This structure describes common attributes found in transport addresses.
* If PJ_SOCKADDR_HAS_LEN is not zero, then sa_zero_len member is added
* to this struct. As far the application is concerned, the value of
* this member will always be zero. Internally, PJLIB may modify the value
* before calling OS socket API, and reset the value back to zero before
* returning the struct to application.
*/
typedef struct pj_addr_hdr
{
#if defined(PJ_SOCKADDR_HAS_LEN) && PJ_SOCKADDR_HAS_LEN!=0
pj_uint8_t sa_zero_len;
pj_uint8_t sa_family;
#else
pj_uint16_t sa_family; /**< Common data: address family. */
#endif
} pj_addr_hdr;
/**
* This union describes a generic socket address.
*/
typedef union pj_sockaddr
{
pj_addr_hdr addr; /**< Generic transport address. */
pj_sockaddr_in ipv4; /**< IPv4 transport address. */
pj_sockaddr_in6 ipv6; /**< IPv6 transport address. */
} pj_sockaddr;
/**
* This structure provides multicast group information for IPv4 addresses.
*/
typedef struct pj_ip_mreq {
pj_in_addr imr_multiaddr; /**< IP multicast address of group. */
pj_in_addr imr_interface; /**< local IP address of interface. */
} pj_ip_mreq;
/**
* Options to be set for the socket.
*/
typedef struct pj_sockopt_params
{
/* The number of options to be applied. */
unsigned cnt;
/* Array of options to be applied. */
struct {
/* The level at which the option is defined. */
int level;
/* Option name. */
int optname;
/* Pointer to the buffer in which the option is specified. */
void *optval;
/* Buffer size of the buffer pointed by optval. */
int optlen;
} options[PJ_MAX_SOCKOPT_PARAMS];
} pj_sockopt_params;
/*****************************************************************************
*
* SOCKET ADDRESS MANIPULATION.
*
*****************************************************************************
*/
/**
* Convert 16-bit value from network byte order to host byte order.
*
* @param netshort 16-bit network value.
* @return 16-bit host value.
*/
PJ_DECL(pj_uint16_t) pj_ntohs(pj_uint16_t netshort);
/**
* Convert 16-bit value from host byte order to network byte order.
*
* @param hostshort 16-bit host value.
* @return 16-bit network value.
*/
PJ_DECL(pj_uint16_t) pj_htons(pj_uint16_t hostshort);
/**
* Convert 32-bit value from network byte order to host byte order.
*
* @param netlong 32-bit network value.
* @return 32-bit host value.
*/
PJ_DECL(pj_uint32_t) pj_ntohl(pj_uint32_t netlong);
/**
* Convert 32-bit value from host byte order to network byte order.
*
* @param hostlong 32-bit host value.
* @return 32-bit network value.
*/
PJ_DECL(pj_uint32_t) pj_htonl(pj_uint32_t hostlong);
/**
* Convert an Internet host address given in network byte order
* to string in standard numbers and dots notation.
*
* @param inaddr The host address.
* @return The string address.
*/
PJ_DECL(char*) pj_inet_ntoa(pj_in_addr inaddr);
/**
* This function converts the Internet host address cp from the standard
* numbers-and-dots notation into binary data and stores it in the structure
* that inp points to.
*
* @param cp IP address in standard numbers-and-dots notation.
* @param inp Structure that holds the output of the conversion.
*
* @return nonzero if the address is valid, zero if not.
*/
PJ_DECL(int) pj_inet_aton(const pj_str_t *cp, pj_in_addr *inp);
/**
* This function converts an address in its standard text presentation form
* into its numeric binary form. It supports both IPv4 and IPv6 address
* conversion.
*
* @param af Specify the family of the address. The PJ_AF_INET and
* PJ_AF_INET6 address families shall be supported.
* @param src Points to the string being passed in.
* @param dst Points to a buffer into which the function stores the
* numeric address; this shall be large enough to hold the
* numeric address (32 bits for PJ_AF_INET, 128 bits for
* PJ_AF_INET6).
*
* @return PJ_SUCCESS if conversion was successful.
*/
PJ_DECL(pj_status_t) pj_inet_pton(int af, const pj_str_t *src, void *dst);
/**
* This function converts a numeric address into a text string suitable
* for presentation. It supports both IPv4 and IPv6 address
* conversion.
* @see pj_sockaddr_print()
*
* @param af Specify the family of the address. This can be PJ_AF_INET
* or PJ_AF_INET6.
* @param src Points to a buffer holding an IPv4 address if the af argument
* is PJ_AF_INET, or an IPv6 address if the af argument is
* PJ_AF_INET6; the address must be in network byte order.
* @param dst Points to a buffer where the function stores the resulting
* text string; it shall not be NULL.
* @param size Specifies the size of this buffer, which shall be large
* enough to hold the text string (PJ_INET_ADDRSTRLEN characters
* for IPv4, PJ_INET6_ADDRSTRLEN characters for IPv6).
*
* @return PJ_SUCCESS if conversion was successful.
*/
PJ_DECL(pj_status_t) pj_inet_ntop(int af, const void *src,
char *dst, int size);
/**
* Converts numeric address into its text string representation.
* @see pj_sockaddr_print()
*
* @param af Specify the family of the address. This can be PJ_AF_INET
* or PJ_AF_INET6.
* @param src Points to a buffer holding an IPv4 address if the af argument
* is PJ_AF_INET, or an IPv6 address if the af argument is
* PJ_AF_INET6; the address must be in network byte order.
* @param dst Points to a buffer where the function stores the resulting
* text string; it shall not be NULL.
* @param size Specifies the size of this buffer, which shall be large
* enough to hold the text string (PJ_INET_ADDRSTRLEN characters
* for IPv4, PJ_INET6_ADDRSTRLEN characters for IPv6).
*
* @return The address string or NULL if failed.
*/
PJ_DECL(char*) pj_inet_ntop2(int af, const void *src,
char *dst, int size);
/**
* Print socket address.
*
* @param addr The socket address.
* @param buf Text buffer.
* @param size Size of buffer.
* @param flags Bitmask combination of these value:
* - 1: port number is included.
* - 2: square bracket is included for IPv6 address.
*
* @return The address string.
*/
PJ_DECL(char*) pj_sockaddr_print(const pj_sockaddr_t *addr,
char *buf, int size,
unsigned flags);
/**
* Convert address string with numbers and dots to binary IP address.
*
* @param cp The IP address in numbers and dots notation.
* @return If success, the IP address is returned in network
* byte order. If failed, PJ_INADDR_NONE will be
* returned.
* @remark
* This is an obsolete interface to #pj_inet_aton(); it is obsolete
* because -1 is a valid address (255.255.255.255), and #pj_inet_aton()
* provides a cleaner way to indicate error return.
*/
PJ_DECL(pj_in_addr) pj_inet_addr(const pj_str_t *cp);
/**
* Convert address string with numbers and dots to binary IP address.
*
* @param cp The IP address in numbers and dots notation.
* @return If success, the IP address is returned in network
* byte order. If failed, PJ_INADDR_NONE will be
* returned.
* @remark
* This is an obsolete interface to #pj_inet_aton(); it is obsolete
* because -1 is a valid address (255.255.255.255), and #pj_inet_aton()
* provides a cleaner way to indicate error return.
*/
PJ_DECL(pj_in_addr) pj_inet_addr2(const char *cp);
/**
* Initialize IPv4 socket address based on the address and port info.
* The string address may be in a standard numbers and dots notation or
* may be a hostname. If hostname is specified, then the function will
* resolve the host into the IP address.
*
* @see pj_sockaddr_init()
*
* @param addr The IP socket address to be set.
* @param cp The address string, which can be in a standard
* dotted numbers or a hostname to be resolved.
* @param port The port number, in host byte order.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sockaddr_in_init( pj_sockaddr_in *addr,
const pj_str_t *cp,
pj_uint16_t port);
/**
* Initialize IP socket address based on the address and port info.
* The string address may be in a standard numbers and dots notation or
* may be a hostname. If hostname is specified, then the function will
* resolve the host into the IP address.
*
* @see pj_sockaddr_in_init()
*
* @param af Internet address family.
* @param addr The IP socket address to be set.
* @param cp The address string, which can be in a standard
* dotted numbers or a hostname to be resolved.
* @param port The port number, in host byte order.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sockaddr_init(int af,
pj_sockaddr *addr,
const pj_str_t *cp,
pj_uint16_t port);
/**
* Compare two socket addresses.
*
* @param addr1 First address.
* @param addr2 Second address.
*
* @return Zero on equal, -1 if addr1 is less than addr2,
* and +1 if addr1 is more than addr2.
*/
PJ_DECL(int) pj_sockaddr_cmp(const pj_sockaddr_t *addr1,
const pj_sockaddr_t *addr2);
/**
* Get pointer to the address part of a socket address.
*
* @param addr Socket address.
*
* @return Pointer to address part (sin_addr or sin6_addr,
* depending on address family)
*/
PJ_DECL(void*) pj_sockaddr_get_addr(const pj_sockaddr_t *addr);
/**
* Check that a socket address contains a non-zero address part.
*
* @param addr Socket address.
*
* @return Non-zero if address is set to non-zero.
*/
PJ_DECL(pj_bool_t) pj_sockaddr_has_addr(const pj_sockaddr_t *addr);
/**
* Get the address part length of a socket address, based on its address
* family. For PJ_AF_INET, the length will be sizeof(pj_in_addr), and
* for PJ_AF_INET6, the length will be sizeof(pj_in6_addr).
*
* @param addr Socket address.
*
* @return Length in bytes.
*/
PJ_DECL(unsigned) pj_sockaddr_get_addr_len(const pj_sockaddr_t *addr);
/**
* Get the socket address length, based on its address
* family. For PJ_AF_INET, the length will be sizeof(pj_sockaddr_in), and
* for PJ_AF_INET6, the length will be sizeof(pj_sockaddr_in6).
*
* @param addr Socket address.
*
* @return Length in bytes.
*/
PJ_DECL(unsigned) pj_sockaddr_get_len(const pj_sockaddr_t *addr);
/**
* Copy only the address part (sin_addr/sin6_addr) of a socket address.
*
* @param dst Destination socket address.
* @param src Source socket address.
*
* @see @pj_sockaddr_cp()
*/
PJ_DECL(void) pj_sockaddr_copy_addr(pj_sockaddr *dst,
const pj_sockaddr *src);
/**
* Copy socket address. This will copy the whole structure depending
* on the address family of the source socket address.
*
* @param dst Destination socket address.
* @param src Source socket address.
*
* @see @pj_sockaddr_copy_addr()
*/
PJ_DECL(void) pj_sockaddr_cp(pj_sockaddr_t *dst, const pj_sockaddr_t *src);
/*
* If the source's and desired address family matches, copy the address,
* otherwise synthesize a new address with the desired address family,
* from the source address. This can be useful to generate an IPv4-mapped
* IPv6 address.
*
* @param dst_af Desired address family.
* @param dst Destination socket address, invalid if synthesis is
* required and failed.
* @param src Source socket address.
*
* @return PJ_SUCCESS on success, or the error status
* if synthesis is required and failed.
*/
PJ_DECL(pj_status_t) pj_sockaddr_synthesize(int dst_af,
pj_sockaddr_t *dst,
const pj_sockaddr_t *src);
/**
* Get the IP address of an IPv4 socket address.
* The address is returned as 32bit value in host byte order.
*
* @param addr The IP socket address.
* @return 32bit address, in host byte order.
*/
PJ_DECL(pj_in_addr) pj_sockaddr_in_get_addr(const pj_sockaddr_in *addr);
/**
* Set the IP address of an IPv4 socket address.
*
* @param addr The IP socket address.
* @param hostaddr The host address, in host byte order.
*/
PJ_DECL(void) pj_sockaddr_in_set_addr(pj_sockaddr_in *addr,
pj_uint32_t hostaddr);
/**
* Set the IP address of an IP socket address from string address,
* with resolving the host if necessary. The string address may be in a
* standard numbers and dots notation or may be a hostname. If hostname
* is specified, then the function will resolve the host into the IP
* address.
*
* @see pj_sockaddr_set_str_addr()
*
* @param addr The IP socket address to be set.
* @param cp The address string, which can be in a standard
* dotted numbers or a hostname to be resolved.
*
* @return PJ_SUCCESS on success.
*/
PJ_DECL(pj_status_t) pj_sockaddr_in_set_str_addr( pj_sockaddr_in *addr,
const pj_str_t *cp);
/**
* Set the IP address of an IPv4 or IPv6 socket address from string address,
* with resolving the host if necessary. The string address may be in a
* standard IPv6 or IPv6 address or may be a hostname. If hostname
* is specified, then the function will resolve the host into the IP
* address according to the address family.
*
* @param af Address family.
* @param addr The IP socket address to be set.
* @param cp The address string, which can be in a standard
* IP numbers (IPv4 or IPv6) or a hostname to be resolved.
*
* @return PJ_SUCCESS on success.
*/
PJ_DECL(pj_status_t) pj_sockaddr_set_str_addr(int af,
pj_sockaddr *addr,
const pj_str_t *cp);
/**
* Get the port number of a socket address, in host byte order.
* This function can be used for both IPv4 and IPv6 socket address.
*
* @param addr Socket address.
*
* @return Port number, in host byte order.
*/
PJ_DECL(pj_uint16_t) pj_sockaddr_get_port(const pj_sockaddr_t *addr);
/**
* Get the transport layer port number of an Internet socket address.
* The port is returned in host byte order.
*
* @param addr The IP socket address.
* @return Port number, in host byte order.
*/
PJ_DECL(pj_uint16_t) pj_sockaddr_in_get_port(const pj_sockaddr_in *addr);
/**
* Set the port number of an Internet socket address.
*
* @param addr The socket address.
* @param hostport The port number, in host byte order.
*/
PJ_DECL(pj_status_t) pj_sockaddr_set_port(pj_sockaddr *addr,
pj_uint16_t hostport);
/**
* Set the port number of an IPv4 socket address.
*
* @see pj_sockaddr_set_port()
*
* @param addr The IP socket address.
* @param hostport The port number, in host byte order.
*/
PJ_DECL(void) pj_sockaddr_in_set_port(pj_sockaddr_in *addr,
pj_uint16_t hostport);
/**
* Parse string containing IP address and optional port into socket address,
* possibly also with address family detection. This function supports both
* IPv4 and IPv6 parsing, however IPv6 parsing may only be done if IPv6 is
* enabled during compilation.
*
* This function supports parsing several formats. Sample IPv4 inputs and
* their default results::
* - "10.0.0.1:80": address 10.0.0.1 and port 80.
* - "10.0.0.1": address 10.0.0.1 and port zero.
* - "10.0.0.1:": address 10.0.0.1 and port zero.
* - "10.0.0.1:0": address 10.0.0.1 and port zero.
* - ":80": address 0.0.0.0 and port 80.
* - ":": address 0.0.0.0 and port 0.
* - "localhost": address 127.0.0.1 and port 0.
* - "localhost:": address 127.0.0.1 and port 0.
* - "localhost:80": address 127.0.0.1 and port 80.
*
* Sample IPv6 inputs and their default results:
* - "[fec0::01]:80": address fec0::01 and port 80
* - "[fec0::01]": address fec0::01 and port 0
* - "[fec0::01]:": address fec0::01 and port 0
* - "[fec0::01]:0": address fec0::01 and port 0
* - "fec0::01": address fec0::01 and port 0
* - "fec0::01:80": address fec0::01:80 and port 0
* - "::": address zero (::) and port 0
* - "[::]": address zero (::) and port 0
* - "[::]:": address zero (::) and port 0
* - ":::": address zero (::) and port 0
* - "[::]:80": address zero (::) and port 0
* - ":::80": address zero (::) and port 80
*
* Note: when the IPv6 socket address contains port number, the IP
* part of the socket address should be enclosed with square brackets,
* otherwise the port number will be included as part of the IP address
* (see "fec0::01:80" example above).
*
* @param af Optionally specify the address family to be used. If the
* address family is to be deducted from the input, specify
* pj_AF_UNSPEC() here. Other supported values are
* #pj_AF_INET() and #pj_AF_INET6()
* @param options Additional options to assist the parsing, must be zero
* for now.
* @param str The input string to be parsed.
* @param addr Pointer to store the result.
*
* @return PJ_SUCCESS if the parsing is successful.
*
* @see pj_sockaddr_parse2()
*/
PJ_DECL(pj_status_t) pj_sockaddr_parse(int af, unsigned options,
const pj_str_t *str,
pj_sockaddr *addr);
/**
* This function is similar to #pj_sockaddr_parse(), except that it will not
* convert the hostpart into IP address (thus possibly resolving the hostname
* into a #pj_sockaddr.
*
* Unlike #pj_sockaddr_parse(), this function has a limitation that if port
* number is specified in an IPv6 input string, the IP part of the IPv6 socket
* address MUST be enclosed in square brackets, otherwise the port number will
* be considered as part of the IPv6 IP address.
*
* @param af Optionally specify the address family to be used. If the
* address family is to be deducted from the input, specify
* #pj_AF_UNSPEC() here. Other supported values are
* #pj_AF_INET() and #pj_AF_INET6()
* @param options Additional options to assist the parsing, must be zero
* for now.
* @param str The input string to be parsed.
* @param hostpart Optional pointer to store the host part of the socket
* address, with any brackets removed.
* @param port Optional pointer to store the port number. If port number
* is not found, this will be set to zero upon return.
* @param raf Optional pointer to store the detected address family of
* the input address.
*
* @return PJ_SUCCESS if the parsing is successful.
*
* @see pj_sockaddr_parse()
*/
PJ_DECL(pj_status_t) pj_sockaddr_parse2(int af, unsigned options,
const pj_str_t *str,
pj_str_t *hostpart,
pj_uint16_t *port,
int *raf);
/*****************************************************************************
*
* HOST NAME AND ADDRESS.
*
*****************************************************************************
*/
/**
* Get system's host name.
*
* @return The hostname, or empty string if the hostname can not
* be identified.
*/
PJ_DECL(const pj_str_t*) pj_gethostname(void);
/**
* Get host's IP address, which the the first IP address that is resolved
* from the hostname.
*
* @return The host's IP address, PJ_INADDR_NONE if the host
* IP address can not be identified.
*/
PJ_DECL(pj_in_addr) pj_gethostaddr(void);
/*****************************************************************************
*
* SOCKET API.
*
*****************************************************************************
*/
/**
* Create new socket/endpoint for communication.
*
* @param family Specifies a communication domain; this selects the
* protocol family which will be used for communication.
* @param type The socket has the indicated type, which specifies the
* communication semantics.
* @param protocol Specifies a particular protocol to be used with the
* socket. Normally only a single protocol exists to support
* a particular socket type within a given protocol family,
* in which a case protocol can be specified as 0.
* @param sock New socket descriptor, or PJ_INVALID_SOCKET on error.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_socket(int family,
int type,
int protocol,
pj_sock_t *sock);
/**
* Close the socket descriptor.
*
* @param sockfd The socket descriptor.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_close(pj_sock_t sockfd);
/**
* This function gives the socket sockfd the local address my_addr. my_addr is
* addrlen bytes long. Traditionally, this is called assigning a name to
* a socket. When a socket is created with #pj_sock_socket(), it exists in a
* name space (address family) but has no name assigned.
*
* @param sockfd The socket desriptor.
* @param my_addr The local address to bind the socket to.
* @param addrlen The length of the address.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_bind( pj_sock_t sockfd,
const pj_sockaddr_t *my_addr,
int addrlen);
/**
* Bind the IP socket sockfd to the given address and port.
*
* @param sockfd The socket descriptor.
* @param addr Local address to bind the socket to, in host byte order.
* @param port The local port to bind the socket to, in host byte order.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_bind_in( pj_sock_t sockfd,
pj_uint32_t addr,
pj_uint16_t port);
/**
* Bind the IP socket sockfd to the given address and a random port in the
* specified range.
*
* @param sockfd The socket desriptor.
* @param addr The local address and port to bind the socket to.
* @param port_range The port range, relative the to start port number
* specified in port field in #addr. Note that if the
* port is zero, this param will be ignored.
* @param max_try Maximum retries.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_bind_random( pj_sock_t sockfd,
const pj_sockaddr_t *addr,
pj_uint16_t port_range,
pj_uint16_t max_try);
#if PJ_HAS_TCP
/**
* Listen for incoming connection. This function only applies to connection
* oriented sockets (such as PJ_SOCK_STREAM or PJ_SOCK_SEQPACKET), and it
* indicates the willingness to accept incoming connections.
*
* @param sockfd The socket descriptor.
* @param backlog Defines the maximum length the queue of pending
* connections may grow to.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_listen( pj_sock_t sockfd,
int backlog );
/**
* Accept new connection on the specified connection oriented server socket.
*
* @param serverfd The server socket.
* @param newsock New socket on success, of PJ_INVALID_SOCKET if failed.
* @param addr A pointer to sockaddr type. If the argument is not NULL,
* it will be filled by the address of connecting entity.
* @param addrlen Initially specifies the length of the address, and upon
* return will be filled with the exact address length.
*
* @return Zero on success, or the error number.
*/
PJ_DECL(pj_status_t) pj_sock_accept( pj_sock_t serverfd,
pj_sock_t *newsock,
pj_sockaddr_t *addr,
int *addrlen);
#endif
/**
* The file descriptor sockfd must refer to a socket. If the socket is of
* type PJ_SOCK_DGRAM then the serv_addr address is the address to which
* datagrams are sent by default, and the only address from which datagrams
* are received. If the socket is of type PJ_SOCK_STREAM or PJ_SOCK_SEQPACKET,
* this call attempts to make a connection to another socket. The
* other socket is specified by serv_addr, which is an address (of length
* addrlen) in the communications space of the socket. Each communications
* space interprets the serv_addr parameter in its own way.
*
* @param sockfd The socket descriptor.
* @param serv_addr Server address to connect to.
* @param addrlen The length of server address.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_connect( pj_sock_t sockfd,
const pj_sockaddr_t *serv_addr,
int addrlen);
/**
* Return the address of peer which is connected to socket sockfd.
*
* @param sockfd The socket descriptor.
* @param addr Pointer to sockaddr structure to which the address
* will be returned.
* @param namelen Initially the length of the addr. Upon return the value
* will be set to the actual length of the address.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_getpeername(pj_sock_t sockfd,
pj_sockaddr_t *addr,
int *namelen);
/**
* Return the current name of the specified socket.
*
* @param sockfd The socket descriptor.
* @param addr Pointer to sockaddr structure to which the address
* will be returned.
* @param namelen Initially the length of the addr. Upon return the value
* will be set to the actual length of the address.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_getsockname( pj_sock_t sockfd,
pj_sockaddr_t *addr,
int *namelen);
/**
* Get socket option associated with a socket. Options may exist at multiple
* protocol levels; they are always present at the uppermost socket level.
*
* @param sockfd The socket descriptor.
* @param level The level which to get the option from.
* @param optname The option name.
* @param optval Identifies the buffer which the value will be
* returned.
* @param optlen Initially contains the length of the buffer, upon
* return will be set to the actual size of the value.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_getsockopt( pj_sock_t sockfd,
pj_uint16_t level,
pj_uint16_t optname,
void *optval,
int *optlen);
/**
* Manipulate the options associated with a socket. Options may exist at
* multiple protocol levels; they are always present at the uppermost socket
* level.
*
* @param sockfd The socket descriptor.
* @param level The level which to get the option from.
* @param optname The option name.
* @param optval Identifies the buffer which contain the value.
* @param optlen The length of the value.
*
* @return PJ_SUCCESS or the status code.
*/
PJ_DECL(pj_status_t) pj_sock_setsockopt( pj_sock_t sockfd,
pj_uint16_t level,
pj_uint16_t optname,
const void *optval,
int optlen);
/**
* Set socket options associated with a socket. This method will apply all the
* options specified, and ignore any errors that might be raised.
*
* @param sockfd The socket descriptor.
* @param params The socket options.
*
* @return PJ_SUCCESS or the last error code.
*/
PJ_DECL(pj_status_t) pj_sock_setsockopt_params( pj_sock_t sockfd,
const pj_sockopt_params *params);
/**
* Helper function to set socket buffer size using #pj_sock_setsockopt()
* with capability to auto retry with lower buffer setting value until
* the highest possible value is successfully set.
*
* @param sockfd The socket descriptor.
* @param optname The option name, valid values are pj_SO_RCVBUF()
* and pj_SO_SNDBUF().
* @param auto_retry Option whether auto retry with lower value is
* enabled.
* @param buf_size On input, specify the prefered buffer size setting,
* on output, the buffer size setting applied.
*
* @return PJ_SUCCESS or the status code.
*/
PJ_DECL(pj_status_t) pj_sock_setsockopt_sobuf( pj_sock_t sockfd,
pj_uint16_t optname,
pj_bool_t auto_retry,
unsigned *buf_size);
/**
* Receives data stream or message coming to the specified socket.
*
* @param sockfd The socket descriptor.
* @param buf The buffer to receive the data or message.
* @param len On input, the length of the buffer. On return,
* contains the length of data received.
* @param flags Flags (such as pj_MSG_PEEK()).
*
* @return PJ_SUCCESS or the error code.
*/
PJ_DECL(pj_status_t) pj_sock_recv(pj_sock_t sockfd,
void *buf,
pj_ssize_t *len,
unsigned flags);
/**
* Receives data stream or message coming to the specified socket.
*
* @param sockfd The socket descriptor.
* @param buf The buffer to receive the data or message.
* @param len On input, the length of the buffer. On return,
* contains the length of data received.
* @param flags Flags (such as pj_MSG_PEEK()).
* @param from If not NULL, it will be filled with the source
* address of the connection.
* @param fromlen Initially contains the length of from address,
* and upon return will be filled with the actual
* length of the address.
*
* @return PJ_SUCCESS or the error code.
*/
PJ_DECL(pj_status_t) pj_sock_recvfrom( pj_sock_t sockfd,
void *buf,
pj_ssize_t *len,
unsigned flags,
pj_sockaddr_t *from,
int *fromlen);
/**
* Transmit data to the socket.
*
* @param sockfd Socket descriptor.
* @param buf Buffer containing data to be sent.
* @param len On input, the length of the data in the buffer.
* Upon return, it will be filled with the length
* of data sent.
* @param flags Flags (such as pj_MSG_DONTROUTE()).
*
* @return PJ_SUCCESS or the status code.
*/
PJ_DECL(pj_status_t) pj_sock_send(pj_sock_t sockfd,
const void *buf,
pj_ssize_t *len,
unsigned flags);
/**
* Transmit data to the socket to the specified address.
*
* @param sockfd Socket descriptor.
* @param buf Buffer containing data to be sent.
* @param len On input, the length of the data in the buffer.
* Upon return, it will be filled with the length
* of data sent.
* @param flags Flags (such as pj_MSG_DONTROUTE()).
* @param to The address to send.
* @param tolen The length of the address in bytes.
*
* @return PJ_SUCCESS or the status code.
*/
PJ_DECL(pj_status_t) pj_sock_sendto(pj_sock_t sockfd,
const void *buf,
pj_ssize_t *len,
unsigned flags,
const pj_sockaddr_t *to,
int tolen);
#if PJ_HAS_TCP
/**
* The shutdown call causes all or part of a full-duplex connection on the
* socket associated with sockfd to be shut down.
*
* @param sockfd The socket descriptor.
* @param how If how is PJ_SHUT_RD, further receptions will be
* disallowed. If how is PJ_SHUT_WR, further transmissions
* will be disallowed. If how is PJ_SHUT_RDWR, further
* receptions andtransmissions will be disallowed.
*
* @return Zero on success.
*/
PJ_DECL(pj_status_t) pj_sock_shutdown( pj_sock_t sockfd,
int how);
#endif
/*****************************************************************************
*
* Utilities.
*
*****************************************************************************
*/
/**
* Print socket address string. This method will enclose the address string
* with square bracket if it's IPv6 address.
*
* @param host_str The host address string.
* @param port The port address.
* @param buf Text buffer.
* @param size Size of buffer.
* @param flags Bitmask combination of these value:
* - 1: port number is included.
*
* @return The address string.
*/
PJ_DECL(char *) pj_addr_str_print( const pj_str_t *host_str, int port,
char *buf, int size, unsigned flag);
/**
* @}
*/
PJ_END_DECL
#endif /* __PJ_SOCK_H__ */
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