modules/portlib/src/main/native/include/unix/hysock.h - harmony-classlib - Git at Google

 /*
  *  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
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  *  Unless required by applicable law or agreed to in writing, software
  *  distributed under the License is distributed on an "AS IS" BASIS,
  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
  */

 #if !defined(hysock_h)
 #define hysock_h
 /******************************************************\
 		Portable socket library implementation.
 \******************************************************/
 #include <errno.h>
 #include <signal.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <sys/socket.h>
 #include <netinet/in.h>

 #if !defined(ZOS)
 #include <netinet/tcp.h>
 #else /* !defined(ZOS) */
 #include <netinet/tcp_var.h>
 #endif /* !defined(ZOS) */

 #include <netdb.h>
 #include <sys/time.h>
 #include <stdlib.h>

 #if !defined(ZOS)
 #include <sys/socketvar.h>
 #else /* !defined(ZOS) */
 #include <arpa/inet.h>
 #include <xti.h>
 #endif /* !defined(ZOS) */

 #include "hysocket.h"
 #include "hycomp.h"
 #include "hyport.h"
 #if defined(DEBUG)
 #define HYSOCKDEBUG(x, err) printf(x, err)
 #define HYSOCKDEBUGH(x, err) printf(x, err)
 #define HYSOCKDEBUGPRINT(x) printf(x)
 #else
 #define HYSOCKDEBUG(x, err)
 #define HYSOCKDEBUGH(x, err)
 #define HYSOCKDEBUGPRINT(x)
 #endif
 /* the following defines are used to determine how gethostby*_r calls should be handled.*/
 /* HOSTENT_DATA_R: if the HOSTENT_DATA structure is used */
 #define HOSTENT_DATA_R (defined(AIX))
 /* GLIBC_R: uses the GLIBC versions */
 #define GLIBC_R (defined(LINUX))
 /* ORIGINAL_R: the original gethostby* call is thread safe */
 #define ORIGINAL_R defined(FREEBSD)
 /* TOFIX: FreeBSD man page says:
  *   Though these functions are thread-safe, still it is recommended to use
  *   the getaddrinfo(3) family of functions, instead.
  */
 /* NO_R: gethostby*_r calls do not exist and the normal gethostby* calls are not threadsafe */
 #define NO_R (defined(MACOSX))
 /* OTHER_R: everything else */
 #define OTHER_R ((!HOSTENT_DATA_R)&&(!GLIBC_R)&&(!ORIGINAL_R)&&(!NO_R))
 /* Converts (seconds, microseconds) to milliseconds */
 #define TO_MILLIS(sec, microsec) (sec * 1000 + (microsec + 999) / 1000)
 /* os types */
 typedef int OSSOCKET;           /* as returned by socket() */
 typedef struct sockaddr_in OSSOCKADDR;  /* as used by bind() and friends */
 typedef struct hostent OSHOSTENT;
 typedef fd_set OSFDSET;
 typedef struct timeval OSTIMEVAL;
 typedef struct linger OSLINGER;
 typedef struct sockaddr OSADDR;
 typedef struct sockaddr_in6 OSSOCKADDR_IN6;     /* IPv6 */
 typedef struct ipv6_mreq OSIPMREQ6;
 typedef struct addrinfo OSADDRINFO;     /* IPv6 */
 typedef struct sockaddr_storage OSSOCKADDR_STORAGE;     /* IPv6 */
 /*
  * Socket Types
  */
 #define OSSOCK_ANY			 0      /* for getaddrinfo hints */
 #define OSSOCK_STREAM     SOCK_STREAM   /* stream socket */
 #define OSSOCK_DGRAM      SOCK_DGRAM    /* datagram socket */
 #define OSSOCK_RAW        SOCK_RAW      /* raw-protocol interface */
 #define OSSOCK_RDM        SOCK_RDM      /* reliably-delivered message */
 #define OSSOCK_SEQPACKET  SOCK_SEQPACKET        /* sequenced packet stream */
 #if defined(HOSTENT_DATA_R)
 typedef struct hostent_data OSHOSTENT_DATA;
 #endif
 typedef struct ip_mreq OSIPMREQ;
 #define OSSOMAXCONN SOMAXCONN
 #define OS_BADSOCKET -1         /* Provide bad socket constant */
 /* defines for socket levels */
 #define OS_SOL_SOCKET SOL_SOCKET
 #define OS_IPPROTO_TCP IPPROTO_TCP
 #define OS_IPPROTO_IP IPPROTO_IP
 #if defined(IPv6_FUNCTION_SUPPORT)
 #define OS_IPPROTO_IPV6 IPPROTO_IPV6
 #endif
 /* defines for socket options */
 #define OS_SO_LINGER SO_LINGER
 #define OS_SO_KEEPALIVE SO_KEEPALIVE
 #define OS_TCP_NODELAY TCP_NODELAY
 #define OS_SO_REUSEADDR SO_REUSEADDR
 #define OS_SO_SNDBUF SO_SNDBUF
 #define OS_SO_RCVBUF SO_RCVBUF
 #define OS_SO_BROADCAST SO_BROADCAST    /* Support datagram broadcasts */
 #define OS_SO_OOBINLINE SO_OOBINLINE
 #define OS_IP_TOS	 IP_TOS
 /* defines for socket options, multicast */
 #define OS_MCAST_TTL IP_MULTICAST_TTL
 #define OS_MCAST_ADD_MEMBERSHIP IP_ADD_MEMBERSHIP
 #define OS_MCAST_DROP_MEMBERSHIP IP_DROP_MEMBERSHIP
 #define OS_MCAST_INTERFACE IP_MULTICAST_IF
 #define OS_MCAST_LOOP IP_MULTICAST_LOOP
 #if defined(IPv6_FUNCTION_SUPPORT)
 #define OS_MCAST_INTERFACE_2 IPV6_MULTICAST_IF
 #if defined(FREEBSD) || defined(MACOSX)
 #define OS_IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
 #define OS_IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
 #else
 #define OS_IPV6_ADD_MEMBERSHIP IPV6_ADD_MEMBERSHIP
 #define OS_IPV6_DROP_MEMBERSHIP IPV6_DROP_MEMBERSHIP
 #endif
 #endif
 /* defines for the unix error constants.  These may be overriden for specific platforms. */
 #define HYPORT_ERROR_SOCKET_UNIX_CONNRESET 		ECONNRESET
 #define HYPORT_ERROR_SOCKET_UNIX_EAGAIN							EAGAIN
 #define HYPORT_ERROR_SOCKET_UNIX_EAFNOSUPPORT			EAFNOSUPPORT
 #define HYPORT_ERROR_SOCKET_UNIX_EBADF								EBADF
 #define HYPORT_ERROR_SOCKET_UNIX_ECONNRESET					ECONNRESET
 #define HYPORT_ERROR_SOCKET_UNIX_EINVAL							EINVAL
 #define HYPORT_ERROR_SOCKET_UNIX_EINTR								EINTR
 #define HYPORT_ERROR_SOCKET_UNIX_EFAULT							EFAULT
 #define HYPORT_ERROR_SOCKET_UNIX_ENOPROTOOPT				ENOPROTOOPT
 #define HYPORT_ERROR_SOCKET_UNIX_ENOTCONN						ENOTCONN
 #define HYPORT_ERROR_SOCKET_UNIX_EPROTONOSUPPORT		EPROTONOSUPPORT
 #define HYPORT_ERROR_SOCKET_UNIX_HOSTNOTFOUND			HOST_NOT_FOUND
 #define HYPORT_ERROR_SOCKET_UNIX_ENOBUFS						ENOBUFS
 #define HYPORT_ERROR_SOCKET_UNIX_NODATA							NO_DATA
 #define HYPORT_ERROR_SOCKET_UNIX_NORECOVERY				NO_RECOVERY
 #define HYPORT_ERROR_SOCKET_UNIX_ENOTSOCK					ENOTSOCK
 #define HYPORT_ERROR_SOCKET_UNIX_TRYAGAIN						TRY_AGAIN
 #define HYPORT_ERROR_SOCKET_UNIX_EOPNOTSUP				EOPNOTSUPP
 #define HYPORT_ERROR_SOCKET_UNIX_ETIMEDOUT				ETIMEDOUT
 #define HYPORT_ERROR_SOCKET_UNIX_CONNREFUSED				ECONNREFUSED
 #define HYPORT_ERROR_SOCKET_UNIX_EINPROGRESS				EINPROGRESS
 #define HYPORT_ERROR_SOCKET_UNIX_ENETUNREACH				ENETUNREACH
 #define HYPORT_ERROR_SOCKET_UNIX_EACCES						EACCES
 /* platform constants */
 #define HYSOCK_MAXCONN OSSOMAXCONN;
 #define HYSOCK_BADSOCKET OS_BADSOCKET   /* Provide bad socket constant */
 /* defines added for IPv6 */
 #define OS_AF_INET4 AF_INET
 #define OS_AF_UNSPEC AF_UNSPEC
 #define OS_PF_UNSPEC PF_UNSPEC
 #define OS_PF_INET4 PF_INET
 #define OS_INET4_ADDRESS_LENGTH INET_ADDRSTRLEN
 #if defined(NI_MAXHOST)
 #define OSNIMAXHOST NI_MAXHOST
 #define OSNIMAXSERV NI_MAXSERV
 #else
 #define OSNIMAXHOST 1025
 #define OSNIMAXSERV 32
 #endif

 #if defined(AF_INET6)
 #define OS_AF_INET6 AF_INET6
 #define OS_PF_INET6 PF_INET6
 #define OS_INET6_ADDRESS_LENGTH INET6_ADDRSTRLEN
 #else
 #define OS_AF_INET6 -1
 #define OS_PF_INET6 -1
 #define OS_INET6_ADDRESS_LENGTH 46
 #endif
 /*platform structs */
 typedef struct hysocket_struct
 {
   OSSOCKET sock;
   U_16 family;
 } hysocket_struct;
 /* The sockets are now structs  */
 #if defined(NO_LVALUE_CASTING)
 #define SOCKET_CAST(x) ((struct hysocket_struct*)  x)->sock
 #else
 #define SOCKET_CAST(x) ((struct hysocket_struct*)  x)->sock
 #endif
 typedef struct hysockaddr_struct
 {
 #if defined(IPv6_FUNCTION_SUPPORT)
   OSSOCKADDR_STORAGE addr;
 #else
   OSSOCKADDR addr;
 #endif
 } hysockaddr_struct;
 typedef struct hyhostent_struct
 {
   OSHOSTENT *entity;
 } hyhostent_struct;
 typedef struct hyfdset_struct
 {
   OSFDSET handle;
 } hyfdset_struct;
 typedef struct hytimeval_struct
 {
   OSTIMEVAL time;
 } hytimeval_struct;
 typedef struct hylinger_struct
 {
   OSLINGER linger;
 } hylinger_struct;
 typedef struct hyipmreq_struct
 {
   OSIPMREQ addrpair;
 } hyipmreq_struct;
 #define GET_HOST_BUFFER_SIZE 512
 /* The gethostBuffer is allocated bufferSize + EXTRA_SPACE, while gethostby*_r is only aware of bufferSize
  * because there seems to be a bug on Linux 386 where gethostbyname_r writes past the end of the
  * buffer.  This bug has not been observed on other platforms, but EXTRA_SPACE is added anyway as a precaution.*/
 #define EXTRA_SPACE 128
 /*size is 16 because an IP string is "xxx.xxx.xxx.xxx" + 1 null character */
 #define NTOA_SIZE 16
 /** new structure for IPv6 mulitcast requests */
 typedef struct hyipv6_mreq_struct
 {
 #if defined(IPv6_FUNCTION_SUPPORT)
   OSIPMREQ6 mreq;
 #else
   int dummy;
 #endif
 } hyipv6_mreq_struct;
 /* structure for returning either and IPV4 or IPV6 ip address */
 typedef struct hyipAddress_struct
 {
   union
   {
 #if defined(IPv6_FUNCTION_SUPPORT)
     U_8 bytes[sizeof (struct in6_addr)];
 #else
     U_8 bytes[sizeof (struct in_addr)];
 #endif
 struct in_addr inAddr;
 #if defined(IPv6_FUNCTION_SUPPORT)
     struct in6_addr in6Addr;
 #endif
 } addr;
   U_32 length;
   U_32 scope;
 } hyipAddress_struct;
 /* structure for returning network interface information */
 typedef struct hyNetworkInterface_struct
 {
   char *name;
   char *displayName;
   U_32 numberAddresses;
   U_32 index;
   struct hyipAddress_struct *addresses;
 } hyNetworkInterface_struct;
 /* array of network interface structures */
 typedef struct hyNetworkInterfaceArray_struct
 {
   U_32 length;
   struct hyNetworkInterface_struct *elements;
 } hyNetworkInterfaceArray_struct;
 /** new structure for IPv6 addrinfo will either point to a hostent or
 	an addr info depending on the IPv6 support for this OS */
 typedef struct hyaddrinfo_struct
 {
   void *addr_info;
   int length;
 } hyaddrinfo_struct;
 #endif
	/*
	* 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
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#if !defined(hysock_h)
	#define hysock_h
	/******************************************************\
	Portable socket library implementation.
	\******************************************************/
	#include <errno.h>
	#include <signal.h>
	#include <sys/types.h>
	#include <sys/wait.h>
	#include <unistd.h>
	#include <stdio.h>
	#include <sys/socket.h>
	#include <netinet/in.h>

	#if !defined(ZOS)
	#include <netinet/tcp.h>
	#else /* !defined(ZOS) */
	#include <netinet/tcp_var.h>
	#endif /* !defined(ZOS) */

	#include <netdb.h>
	#include <sys/time.h>
	#include <stdlib.h>

	#if !defined(ZOS)
	#include <sys/socketvar.h>
	#else /* !defined(ZOS) */
	#include <arpa/inet.h>
	#include <xti.h>
	#endif /* !defined(ZOS) */

	#include "hysocket.h"
	#include "hycomp.h"
	#include "hyport.h"
	#if defined(DEBUG)
	#define HYSOCKDEBUG(x, err) printf(x, err)
	#define HYSOCKDEBUGH(x, err) printf(x, err)
	#define HYSOCKDEBUGPRINT(x) printf(x)
	#else
	#define HYSOCKDEBUG(x, err)
	#define HYSOCKDEBUGH(x, err)
	#define HYSOCKDEBUGPRINT(x)
	#endif
	/* the following defines are used to determine how gethostby_r calls should be handled./
	/* HOSTENT_DATA_R: if the HOSTENT_DATA structure is used */
	#define HOSTENT_DATA_R (defined(AIX))
	/* GLIBC_R: uses the GLIBC versions */
	#define GLIBC_R (defined(LINUX))
	/* ORIGINAL_R: the original gethostby* call is thread safe */
	#define ORIGINAL_R defined(FREEBSD)
	/* TOFIX: FreeBSD man page says:
	* Though these functions are thread-safe, still it is recommended to use
	* the getaddrinfo(3) family of functions, instead.
	*/
	/* NO_R: gethostby_r calls do not exist and the normal gethostby calls are not threadsafe */
	#define NO_R (defined(MACOSX))
	/* OTHER_R: everything else */
	#define OTHER_R ((!HOSTENT_DATA_R)&&(!GLIBC_R)&&(!ORIGINAL_R)&&(!NO_R))
	/* Converts (seconds, microseconds) to milliseconds */
	#define TO_MILLIS(sec, microsec) (sec * 1000 + (microsec + 999) / 1000)
	/* os types */
	typedef int OSSOCKET; /* as returned by socket() */
	typedef struct sockaddr_in OSSOCKADDR; /* as used by bind() and friends */
	typedef struct hostent OSHOSTENT;
	typedef fd_set OSFDSET;
	typedef struct timeval OSTIMEVAL;
	typedef struct linger OSLINGER;
	typedef struct sockaddr OSADDR;
	typedef struct sockaddr_in6 OSSOCKADDR_IN6; /* IPv6 */
	typedef struct ipv6_mreq OSIPMREQ6;
	typedef struct addrinfo OSADDRINFO; /* IPv6 */
	typedef struct sockaddr_storage OSSOCKADDR_STORAGE; /* IPv6 */
	/*
	* Socket Types
	*/
	#define OSSOCK_ANY 0 /* for getaddrinfo hints */
	#define OSSOCK_STREAM SOCK_STREAM /* stream socket */
	#define OSSOCK_DGRAM SOCK_DGRAM /* datagram socket */
	#define OSSOCK_RAW SOCK_RAW /* raw-protocol interface */
	#define OSSOCK_RDM SOCK_RDM /* reliably-delivered message */
	#define OSSOCK_SEQPACKET SOCK_SEQPACKET /* sequenced packet stream */
	#if defined(HOSTENT_DATA_R)
	typedef struct hostent_data OSHOSTENT_DATA;
	#endif
	typedef struct ip_mreq OSIPMREQ;
	#define OSSOMAXCONN SOMAXCONN
	#define OS_BADSOCKET -1 /* Provide bad socket constant */
	/* defines for socket levels */
	#define OS_SOL_SOCKET SOL_SOCKET
	#define OS_IPPROTO_TCP IPPROTO_TCP
	#define OS_IPPROTO_IP IPPROTO_IP
	#if defined(IPv6_FUNCTION_SUPPORT)
	#define OS_IPPROTO_IPV6 IPPROTO_IPV6
	#endif
	/* defines for socket options */
	#define OS_SO_LINGER SO_LINGER
	#define OS_SO_KEEPALIVE SO_KEEPALIVE
	#define OS_TCP_NODELAY TCP_NODELAY
	#define OS_SO_REUSEADDR SO_REUSEADDR
	#define OS_SO_SNDBUF SO_SNDBUF
	#define OS_SO_RCVBUF SO_RCVBUF
	#define OS_SO_BROADCAST SO_BROADCAST /* Support datagram broadcasts */
	#define OS_SO_OOBINLINE SO_OOBINLINE
	#define OS_IP_TOS IP_TOS
	/* defines for socket options, multicast */
	#define OS_MCAST_TTL IP_MULTICAST_TTL
	#define OS_MCAST_ADD_MEMBERSHIP IP_ADD_MEMBERSHIP
	#define OS_MCAST_DROP_MEMBERSHIP IP_DROP_MEMBERSHIP
	#define OS_MCAST_INTERFACE IP_MULTICAST_IF
	#define OS_MCAST_LOOP IP_MULTICAST_LOOP
	#if defined(IPv6_FUNCTION_SUPPORT)
	#define OS_MCAST_INTERFACE_2 IPV6_MULTICAST_IF
	#if defined(FREEBSD) \|\| defined(MACOSX)
	#define OS_IPV6_ADD_MEMBERSHIP IPV6_JOIN_GROUP
	#define OS_IPV6_DROP_MEMBERSHIP IPV6_LEAVE_GROUP
	#else
	#define OS_IPV6_ADD_MEMBERSHIP IPV6_ADD_MEMBERSHIP
	#define OS_IPV6_DROP_MEMBERSHIP IPV6_DROP_MEMBERSHIP
	#endif
	#endif
	/* defines for the unix error constants. These may be overriden for specific platforms. */
	#define HYPORT_ERROR_SOCKET_UNIX_CONNRESET ECONNRESET
	#define HYPORT_ERROR_SOCKET_UNIX_EAGAIN EAGAIN
	#define HYPORT_ERROR_SOCKET_UNIX_EAFNOSUPPORT EAFNOSUPPORT
	#define HYPORT_ERROR_SOCKET_UNIX_EBADF EBADF
	#define HYPORT_ERROR_SOCKET_UNIX_ECONNRESET ECONNRESET
	#define HYPORT_ERROR_SOCKET_UNIX_EINVAL EINVAL
	#define HYPORT_ERROR_SOCKET_UNIX_EINTR EINTR
	#define HYPORT_ERROR_SOCKET_UNIX_EFAULT EFAULT
	#define HYPORT_ERROR_SOCKET_UNIX_ENOPROTOOPT ENOPROTOOPT
	#define HYPORT_ERROR_SOCKET_UNIX_ENOTCONN ENOTCONN
	#define HYPORT_ERROR_SOCKET_UNIX_EPROTONOSUPPORT EPROTONOSUPPORT
	#define HYPORT_ERROR_SOCKET_UNIX_HOSTNOTFOUND HOST_NOT_FOUND
	#define HYPORT_ERROR_SOCKET_UNIX_ENOBUFS ENOBUFS
	#define HYPORT_ERROR_SOCKET_UNIX_NODATA NO_DATA
	#define HYPORT_ERROR_SOCKET_UNIX_NORECOVERY NO_RECOVERY
	#define HYPORT_ERROR_SOCKET_UNIX_ENOTSOCK ENOTSOCK
	#define HYPORT_ERROR_SOCKET_UNIX_TRYAGAIN TRY_AGAIN
	#define HYPORT_ERROR_SOCKET_UNIX_EOPNOTSUP EOPNOTSUPP
	#define HYPORT_ERROR_SOCKET_UNIX_ETIMEDOUT ETIMEDOUT
	#define HYPORT_ERROR_SOCKET_UNIX_CONNREFUSED ECONNREFUSED
	#define HYPORT_ERROR_SOCKET_UNIX_EINPROGRESS EINPROGRESS
	#define HYPORT_ERROR_SOCKET_UNIX_ENETUNREACH ENETUNREACH
	#define HYPORT_ERROR_SOCKET_UNIX_EACCES EACCES
	/* platform constants */
	#define HYSOCK_MAXCONN OSSOMAXCONN;
	#define HYSOCK_BADSOCKET OS_BADSOCKET /* Provide bad socket constant */
	/* defines added for IPv6 */
	#define OS_AF_INET4 AF_INET
	#define OS_AF_UNSPEC AF_UNSPEC
	#define OS_PF_UNSPEC PF_UNSPEC
	#define OS_PF_INET4 PF_INET
	#define OS_INET4_ADDRESS_LENGTH INET_ADDRSTRLEN
	#if defined(NI_MAXHOST)
	#define OSNIMAXHOST NI_MAXHOST
	#define OSNIMAXSERV NI_MAXSERV
	#else
	#define OSNIMAXHOST 1025
	#define OSNIMAXSERV 32
	#endif

	#if defined(AF_INET6)
	#define OS_AF_INET6 AF_INET6
	#define OS_PF_INET6 PF_INET6
	#define OS_INET6_ADDRESS_LENGTH INET6_ADDRSTRLEN
	#else
	#define OS_AF_INET6 -1
	#define OS_PF_INET6 -1
	#define OS_INET6_ADDRESS_LENGTH 46
	#endif
	/platform structs /
	typedef struct hysocket_struct
	{
	OSSOCKET sock;
	U_16 family;
	} hysocket_struct;
	/* The sockets are now structs */
	#if defined(NO_LVALUE_CASTING)
	#define SOCKET_CAST(x) ((struct hysocket_struct*) x)->sock
	#else
	#define SOCKET_CAST(x) ((struct hysocket_struct*) x)->sock
	#endif
	typedef struct hysockaddr_struct
	{
	#if defined(IPv6_FUNCTION_SUPPORT)
	OSSOCKADDR_STORAGE addr;
	#else
	OSSOCKADDR addr;
	#endif
	} hysockaddr_struct;
	typedef struct hyhostent_struct
	{
	OSHOSTENT *entity;
	} hyhostent_struct;
	typedef struct hyfdset_struct
	{
	OSFDSET handle;
	} hyfdset_struct;
	typedef struct hytimeval_struct
	{
	OSTIMEVAL time;
	} hytimeval_struct;
	typedef struct hylinger_struct
	{
	OSLINGER linger;
	} hylinger_struct;
	typedef struct hyipmreq_struct
	{
	OSIPMREQ addrpair;
	} hyipmreq_struct;
	#define GET_HOST_BUFFER_SIZE 512
	/* The gethostBuffer is allocated bufferSize + EXTRA_SPACE, while gethostby*_r is only aware of bufferSize
	* because there seems to be a bug on Linux 386 where gethostbyname_r writes past the end of the
	* buffer. This bug has not been observed on other platforms, but EXTRA_SPACE is added anyway as a precaution.*/
	#define EXTRA_SPACE 128
	/size is 16 because an IP string is "xxx.xxx.xxx.xxx" + 1 null character /
	#define NTOA_SIZE 16
	/** new structure for IPv6 mulitcast requests */
	typedef struct hyipv6_mreq_struct
	{
	#if defined(IPv6_FUNCTION_SUPPORT)
	OSIPMREQ6 mreq;
	#else
	int dummy;
	#endif
	} hyipv6_mreq_struct;
	/* structure for returning either and IPV4 or IPV6 ip address */
	typedef struct hyipAddress_struct
	{
	union
	{
	#if defined(IPv6_FUNCTION_SUPPORT)
	U_8 bytes[sizeof (struct in6_addr)];
	#else
	U_8 bytes[sizeof (struct in_addr)];
	#endif
	struct in_addr inAddr;
	#if defined(IPv6_FUNCTION_SUPPORT)
	struct in6_addr in6Addr;
	#endif
	} addr;
	U_32 length;
	U_32 scope;
	} hyipAddress_struct;
	/* structure for returning network interface information */
	typedef struct hyNetworkInterface_struct
	{
	char *name;
	char *displayName;
	U_32 numberAddresses;
	U_32 index;
	struct hyipAddress_struct *addresses;
	} hyNetworkInterface_struct;
	/* array of network interface structures */
	typedef struct hyNetworkInterfaceArray_struct
	{
	U_32 length;
	struct hyNetworkInterface_struct *elements;
	} hyNetworkInterfaceArray_struct;
	/** new structure for IPv6 addrinfo will either point to a hostent or
	an addr info depending on the IPv6 support for this OS */
	typedef struct hyaddrinfo_struct
	{
	void *addr_info;
	int length;
	} hyaddrinfo_struct;
	#endif