util/src/network_handler.c

/*
 * 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.
 */

#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <axutil_network_handler.h>
#include <fcntl.h>


#if defined(WIN32)
/* fix for an older version of winsock2.h */
#if !defined(SO_EXCLUSIVEADDRUSE)
#define SO_EXCLUSIVEADDRUSE ((int)(~SO_REUSEADDR))
#endif
#endif

#if defined(WIN32)
static int is_init_socket = 0;
axis2_bool_t axis2_init_socket(
);
#endif

AXIS2_EXTERN axis2_socket_t AXIS2_CALL
axutil_network_handler_open_socket(
    const axutil_env_t *env,
    char *server,
    int port)
{
    axis2_socket_t sock = AXIS2_INVALID_SOCKET;
    struct sockaddr_in sock_addr;
    struct linger ll;
    int nodelay = 1;

#if defined(WIN32)
    if (is_init_socket == 0)
    {
        axis2_init_socket();
        is_init_socket = 1;
    }
#endif

    AXIS2_ENV_CHECK(env, AXIS2_CRITICAL_FAILURE);
    AXIS2_PARAM_CHECK(env->error, server, AXIS2_INVALID_SOCKET);

#ifndef WIN32
    if((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
    /*AF_INET is not defined in sys/socket.h but PF_INET */
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#else
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == INVALID_SOCKET)
    /* In Win 32 if the socket creation failed it return 0 not a negative value */
    {
        char buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        /* Get the detailed error message */
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#endif 

    memset(&sock_addr, 0, sizeof(sock_addr));
    sock_addr.sin_family = AF_INET;
    sock_addr.sin_addr.s_addr = inet_addr(server); /*arpa/inet.d */

    if(sock_addr.sin_addr.s_addr == AXIS2_INADDR_NONE) /*netinet/in.h */
    {
        /*
         * server may be a host name
         */
        struct hostent *lphost = NULL;
        lphost = gethostbyname(server);

        if(lphost)
        {
            sock_addr.sin_addr.s_addr = ((struct in_addr *)lphost->h_addr)->s_addr;
        }
        else
        {
            AXIS2_CLOSE_SOCKET(sock);
            AXIS2_ERROR_SET(env->error, AXIS2_ERROR_INVALID_ADDRESS, AXIS2_FAILURE);
            return AXIS2_INVALID_SOCKET;
        }
    }

    sock_addr.sin_port = htons((axis2_unsigned_short_t)port);

    /* Connect to server */
    if(connect(sock, (struct sockaddr *)&sock_addr, sizeof(sock_addr)) < 0)
    {
        AXIS2_CLOSE_SOCKET(sock);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
    setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (const char *)&nodelay, sizeof(nodelay));
    ll.l_onoff = 1;
    ll.l_linger = 5;
    setsockopt(sock, SOL_SOCKET, SO_LINGER, (const char *)&ll, sizeof(struct linger));
    return sock;
}

AXIS2_EXTERN axis2_socket_t AXIS2_CALL
axutil_network_handler_create_server_socket(
    const axutil_env_t *env,
    int port)
{
    axis2_socket_t sock = AXIS2_INVALID_SOCKET;
    axis2_socket_t i = 0;
    struct sockaddr_in sock_addr;

    AXIS2_ENV_CHECK(env, AXIS2_CRITICAL_FAILURE);
#if defined(WIN32)
    if (is_init_socket == 0)
    {
        axis2_init_socket();
        is_init_socket = 1;
    }
#endif
    sock = socket(AF_INET, SOCK_STREAM, 0);

#ifndef WIN32
    if(sock < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#else
    if (sock == INVALID_SOCKET)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_INVALID_SOCKET;
    }
#endif
    /* Address re-use */
    i = 1;
#if defined(WIN32)
    setsockopt(sock, SOL_SOCKET, SO_EXCLUSIVEADDRUSE, (char *) &i, sizeof(axis2_socket_t)); /*casted 4th param to char* */
#else
    setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&i, sizeof(axis2_socket_t)); /*casted 4th param to char* */
#endif

    /* Exec behaviour */
    AXIS2_CLOSE_SOCKET_ON_EXIT(sock);
    memset(&sock_addr, 0, sizeof(sock_addr));

    sock_addr.sin_family = AF_INET;
    sock_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    sock_addr.sin_port = htons((axis2_unsigned_short_t)port);

    /* Bind the socket to our port number */
    if(bind(sock, (struct sockaddr *)&sock_addr, sizeof(sock_addr)) < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_BIND_FAILED, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
    if(listen(sock, 50) < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_LISTEN_FAILED, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
    return sock;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_network_handler_close_socket(
    const axutil_env_t *env,
    axis2_socket_t socket)
{
    int i = 0;
    char buf[32];
    if(socket < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_INVALID_SOCKET, AXIS2_FAILURE);
        return AXIS2_FAILURE;
    }
    shutdown(socket, AXIS2_SHUT_WR);
    axutil_network_handler_set_sock_option(env, socket, SO_RCVTIMEO, 1);
    i = recv(socket, buf, 32, 0);
    AXIS2_CLOSE_SOCKET(socket);
    return AXIS2_SUCCESS;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_network_handler_set_sock_option(
    const axutil_env_t *env,
    axis2_socket_t socket,
    int option,
    int value)
{
    if(option == SO_RCVTIMEO || option == SO_SNDTIMEO)
    {
#if defined(WIN32)
        DWORD tv = value; /* windows expects milliseconds in a DWORD */
#else
        struct timeval tv;
        /* we deal with milliseconds */
        tv.tv_sec = value / 1000;
        tv.tv_usec = (value % 1000) * 1000;
#endif
        setsockopt(socket, SOL_SOCKET, option, (char *)&tv, sizeof(tv));
        return AXIS2_SUCCESS;
    }
    else if(option == SO_REUSEADDR)
    {
        if((setsockopt(socket, SOL_SOCKET, SO_REUSEADDR, (char *)&value, sizeof(value))) < 0)
        {
            return AXIS2_FAILURE;
        }
        return AXIS2_SUCCESS;
    }
    return AXIS2_FAILURE;
}

AXIS2_EXTERN axis2_socket_t AXIS2_CALL
axutil_network_handler_svr_socket_accept(
    const axutil_env_t *env,
    axis2_socket_t svr_socket)
{
    struct sockaddr cli_addr;
    struct linger ll;
    int nodelay = 1;
    axis2_socket_len_t cli_len = 0;
    axis2_socket_t cli_socket = AXIS2_INVALID_SOCKET;
    AXIS2_ENV_CHECK(env, AXIS2_CRITICAL_FAILURE);

    cli_len = sizeof(cli_addr);
    cli_socket = accept(svr_socket, (struct sockaddr *)&cli_addr, &cli_len);
#ifndef WIN32
    if(cli_socket < 0)
    {
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI,
            "[Axis2][network_handler] Socket accept \
                failed");
    }
#else
    if (cli_socket == INVALID_SOCKET)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
    }
#endif 

    setsockopt(svr_socket, IPPROTO_TCP, TCP_NODELAY, (const char *)&nodelay, (int)sizeof(nodelay));
    /* We are sure that the difference lies within the int range */
    ll.l_onoff = 1;
    ll.l_linger = 5;
    setsockopt(cli_socket, SOL_SOCKET, SO_LINGER, (const char *)&ll, (int)sizeof(struct linger));
    /* We are sure that the difference lies within the int range */
    return cli_socket;
}

#if defined (WIN32)
axis2_bool_t
axis2_init_socket(
)
{
    WORD wVersionRequested;
    WSADATA wsaData;
    int err;
    wVersionRequested = MAKEWORD(2, 2);

    err = WSAStartup(wVersionRequested, &wsaData);

    if (err != 0)
    return 0; /* WinSock 2.2 not found */

    /* Confirm that the WinSock DLL supports 2.2. 
     * Note that if the DLL supports versions greater 
     * than 2.2 in addition to 2.2, it will still return 
     * 2.2 in wVersion since that is the version we 
     * requested.
     */

    if (LOBYTE(wsaData.wVersion) != 2 || HIBYTE(wsaData.wVersion) != 2)
    {
        WSACleanup();
        return 0; /* WinSock 2.2 not supported */
    }
    return 1;
}
#endif

AXIS2_EXTERN axis2_char_t *AXIS2_CALL
axutil_network_handler_get_svr_ip(
    const axutil_env_t *env,
    axis2_socket_t socket)
{
    struct sockaddr_in addr;
    axis2_socket_len_t len = sizeof(addr);
    char *ret = NULL;
    memset(&addr, 0, sizeof(addr));
    if(getsockname(socket, (struct sockaddr *)&addr, &len) < 0)
    {
        return NULL;
    }
    ret = inet_ntoa(addr.sin_addr);
    return ret;
}

AXIS2_EXTERN axis2_char_t *AXIS2_CALL
axutil_network_handler_get_peer_ip(
    const axutil_env_t *env,
    axis2_socket_t socket)
{
    struct sockaddr_in addr;
    axis2_socket_len_t len = sizeof(addr);
    char *ret = NULL;
    memset(&addr, 0, sizeof(addr));
    if(getpeername(socket, (struct sockaddr *)&addr, &len) < 0)
    {
        return NULL;
    }
    ret = inet_ntoa(addr.sin_addr);
    return ret;
}

AXIS2_EXTERN axis2_socket_t AXIS2_CALL
axutil_network_handler_create_dgram_svr_socket(
    const axutil_env_t *env,
    int port)
{
    axis2_socket_t sock = AXIS2_INVALID_SOCKET;
    struct sockaddr_in sock_addr;

    AXIS2_ENV_CHECK(env, AXIS2_CRITICAL_FAILURE);
#if defined(WIN32)
    if (is_init_socket == 0)
    {
        axis2_init_socket();
        is_init_socket = 1;
    }
#endif
    sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

#ifndef WIN32
    if(sock < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#else
    if (sock == INVALID_SOCKET)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_INVALID_SOCKET;
    }
#endif
    /* Exec behaviour */
    AXIS2_CLOSE_SOCKET_ON_EXIT(sock);
    memset(&sock_addr, 0, sizeof(sock_addr));

    sock_addr.sin_family = AF_INET;
    sock_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    sock_addr.sin_port = htons((axis2_unsigned_short_t)port);

    /* Bind the socket to our port number */
    if(bind(sock, (struct sockaddr *)&sock_addr, sizeof(sock_addr)) < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_BIND_FAILED, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
    return sock;
}

AXIS2_EXTERN axis2_socket_t AXIS2_CALL
axutil_network_handler_open_dgram_socket(
    const axutil_env_t *env)
{
    axis2_socket_t sock = AXIS2_INVALID_SOCKET;
#if defined(WIN32)
    if (is_init_socket == 0)
    {
        axis2_init_socket();
        is_init_socket = 1;
    }
#endif    

#ifndef WIN32
    if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0)
    /*AF_INET is not defined in sys/socket.h but PF_INET */
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#else
    if ((sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == INVALID_SOCKET)
    /* In Win 32 if the socket creation failed it return 0 not a negative value */
    {
        char buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        /* Get the detailed error message */
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#endif 	
    return sock;
}

/* 
 * This function blocks until data is available to read from the socket 
 * and read all the data in the socket. If the buffer size specified is 
 * lesser than the actual data a failure will be returned.
 */
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_network_handler_read_dgram(
    const axutil_env_t *env,
    axis2_socket_t sock,
    axis2_char_t *buffer,
    int *buf_len,
    axis2_char_t **addr,
    int *port)
{
    struct sockaddr_in sender_address;
    int received = 0;
    socklen_t sender_address_size;
    
    sender_address_size = sizeof(sender_address);
    received = recvfrom(sock, buffer, *buf_len, 0, (struct sockaddr *)&sender_address, &sender_address_size);
#ifdef WIN32
    if (SOCKET_ERROR == received)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_FAILURE;
    }
#else
    if(received < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#endif
    if(port && addr)
    {
        *port = ntohs(sender_address.sin_port);
        *addr = inet_ntoa(sender_address.sin_addr);
    }
    *buf_len = received;
    return AXIS2_SUCCESS;
}

/* 
 * Sends a datagram to the specified location.
 */
AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_network_handler_send_dgram(
    const axutil_env_t *env,
    axis2_socket_t sock,
    axis2_char_t *buff,
    int *buf_len,
    axis2_char_t *addr,
    int dest_port,
    int *source_port)
{
    struct sockaddr_in recv_addr, source_addr;
    int send_bytes = 0;
    unsigned int recv_addr_size = 0;
    socklen_t source_addr_size = sizeof(source_addr);
    recv_addr_size = sizeof(recv_addr);

    memset(&recv_addr, 0, sizeof(recv_addr));
    memset(&recv_addr, 0, sizeof(source_addr));

    recv_addr.sin_addr.s_addr = inet_addr(addr);
    if(recv_addr.sin_addr.s_addr == AXIS2_INADDR_NONE) /*netinet/in.h */
    {
        /*
         * server may be a host name
         */
        struct hostent *lphost = NULL;
        lphost = gethostbyname(addr);

        if(lphost)
        {
            recv_addr.sin_addr.s_addr = ((struct in_addr *)lphost->h_addr)->s_addr;
        }
        else
        {
            AXIS2_ERROR_SET(env->error, AXIS2_ERROR_INVALID_ADDRESS, AXIS2_FAILURE);
            return AXIS2_FAILURE;
        }
    }

    recv_addr.sin_family = AF_INET;
    recv_addr.sin_port = htons((axis2_unsigned_short_t)dest_port);

    send_bytes = sendto(sock, buff, *buf_len, 0, (struct sockaddr *)&recv_addr, recv_addr_size);

    getsockname(sock, (struct sockaddr *)&source_addr, &source_addr_size);

#ifdef WIN32
    if (send_bytes == SOCKET_ERROR)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_FAILURE;
    }
#else
    if(send_bytes < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_FAILURE;
    }
#endif
    if(source_port)
    {
        *source_port = ntohs(source_addr.sin_port);
    }
    *buf_len = send_bytes;
    return AXIS2_SUCCESS;
}

AXIS2_EXTERN axis2_status_t AXIS2_CALL
axutil_network_handler_bind_socket(
    const axutil_env_t *env,
    axis2_socket_t sock,
    int port)
{
    struct sockaddr_in source_addr;

    memset(&source_addr, 0, sizeof(source_addr));
    source_addr.sin_family = AF_INET;
    source_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    source_addr.sin_port = htons((axis2_unsigned_short_t)port);
#ifdef WIN32
    if (bind(sock, (struct sockaddr *)&source_addr, sizeof(source_addr)) == SOCKET_ERROR)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_FAILURE;
    }
#else
    if(bind(sock, (struct sockaddr *)&source_addr, sizeof(source_addr)) < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }
#endif
    return AXIS2_SUCCESS;
}

AXIS2_EXTERN axis2_socket_t AXIS2_CALL
axutil_network_hadler_create_multicast_svr_socket(
    const axutil_env_t *env,
    int port,
    axis2_char_t *mul_addr)
{
    axis2_socket_t sock = AXIS2_INVALID_SOCKET;
    struct sockaddr_in sock_addr;
    struct ip_mreq mc_req;

    AXIS2_ENV_CHECK(env, AXIS2_CRITICAL_FAILURE);
#if defined(WIN32)
    if (is_init_socket == 0)
    {
        axis2_init_socket();
        is_init_socket = 1;
    }
#endif
    sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

#ifndef WIN32
    if(sock < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_FAILURE;
    }
#else
    if (sock == INVALID_SOCKET)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_FAILURE;
    }
#endif

    /* Exec behaviour */
    AXIS2_CLOSE_SOCKET_ON_EXIT(sock);
    memset(&sock_addr, 0, sizeof(sock_addr));

    sock_addr.sin_family = AF_INET;
    sock_addr.sin_addr.s_addr = htonl(INADDR_ANY);
    sock_addr.sin_port = htons((axis2_unsigned_short_t)port);

    /* Bind the socket to our port number */
    if(bind(sock, (struct sockaddr *)&sock_addr, sizeof(sock_addr)) < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_BIND_FAILED, AXIS2_FAILURE);
        return AXIS2_INVALID_SOCKET;
    }

    /* Send an IGMP request to join the multicast group */
    mc_req.imr_multiaddr.s_addr = inet_addr(mul_addr);
    mc_req.imr_interface.s_addr = htonl(INADDR_ANY);
#ifdef WIN32	
    if ((setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *) &mc_req, sizeof(mc_req))) == SOCKET_ERROR)
    {
        axis2_char_t buf[AXUTIL_WIN32_ERROR_BUFSIZE];
        axutil_win32_get_last_wsa_error(buf, AXUTIL_WIN32_ERROR_BUFSIZE);
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        AXIS2_LOG_ERROR(env->log, AXIS2_LOG_SI, buf);
        return AXIS2_FAILURE;
    }
#else
    if((setsockopt(sock, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&mc_req, sizeof(mc_req))) < 0)
    {
        AXIS2_ERROR_SET(env->error, AXIS2_ERROR_SOCKET_ERROR, AXIS2_FAILURE);
        return AXIS2_FAILURE;
    }
#endif	
    return sock;
}