osip及eXosip的编译方法

osip及eXosip的编译方法

在最新版本的osip2、exosip2中不支持在VC6.0下编译osip、exosip协议栈的方法

说明：
1.以下文章中的osip版本为3.1.0
2.eXosip版本为3.1.0
3.编译环境为：Windows XP 专业版本+VS 2005
4.实例程序下载：http://download.csdn.net/source/617797
5.osip、exosip、openssl的开发包下载，开发包包括：osip2.dll、osipparser2.dll、exosip2.dll、libeay32.dll、ssleay32.dll和相对应的lib文件，下载地址同上

第一步，下载：
到http://download.savannah.gnu.org/releases/osip/libosip2-3.1.0.tar.gz
下载最新的osip库并解压
到http://download.savannah.gnu.org/releases/exosip/libeXosip2-3.1.0.tar.gz
下载最新的eXsoip库并解压
第二步，编译osip3.1.0：
1.用VS2005打开libosip2-3.1.0/platform/vsnet/osip.sln
2.对osip2和osipparser2项目生成Release DLL
3.其生成的LIB/DLL 位于：libosip2-3.1.0/platform/vsnet/Release DLL/下
4.如果有出现外部变量找不到的情况，很有可能是生成的dll没有实现该函数，在def文件中删除找不到的外部变量就好了
第三步，编译eXosip3.1.0：
1.用VS2005打开libeXosip2-3.1/platform/vsnet/eXosip.sln
2.将libosip2-3.1/include/osip2目录COPY到libeXosip2-3.1/include/下
3.将libosip2-3.1/include/osipparser2目录COPY到libeXosip2-3.1/include/下
4.在libeXosip2-3.1目录下新建lib目录
5.将“第二步”中生成的libosip2-3.1/platform/vsnet/Release DLL/osip2.lib文件COPY到libeXosip2-3.1/lib目录下
6.将“第二步”中生成的libosip2-3.1/platform/vsnet/Release DLL/osipparser2.lib文件COPY到libeXosip2-3.1/lib目录下
7.修改项目属性，新增Dnsapi.lib Iphlpapi.lib Ws2_32.lib osip2.lib osipparser2.lib库输入
8.修改项目属性，新增库目录../../lib
9.修改项目的输出为.DLL，默认为.lib
10.编译Relase DLL
11.其生成的LIB/DLL 位于：libeXosip2-3.1/platform/vsnet/Release/下

注意：

在eXoSip.def 中添加下面函数的导出,不知道是为什么 这些函数没有导出!
     eXosip_call_set_reference
    eXosip_call_build_initial_invite
    eXosip_call_send_initial_invite
    eXosip_call_build_request
    eXosip_call_build_ack
    eXosip_call_send_ack
    eXosip_call_build_refer
    eXosip_call_build_info
    eXosip_call_build_options
    eXosip_call_build_update
    eXosip_call_build_notify
    eXosip_call_send_request
    eXosip_call_build_answer
    eXosip_call_send_answer
    eXosip_call_terminate
    eXosip_call_build_prack
    eXosip_call_send_prack
    eXosip_call_get_referto
    eXosip_call_find_by_replaces

编译osip可能会出现如下错误：

1：在osipparser.dll的def文件会出现几个拼写错误，如缺少MD5_****的函数前面缺少osip_,使得连接器出现link2019错误，解决方法是在前面加上osip_

2：但是如果在编译的时候出现错误：

libnet_prand.obj : error LNK2001: unresolved external symbol __imp__CryptReleaseContext@8
libnet_prand.obj : error LNK2001: unresolved external symbol __imp__CryptGenRandom@12
libnet_prand.obj : error LNK2001: unresolved external symbol __imp__CryptAcquireContextA@20
Debug/Libnet.dll : fatal error LNK1120: 3 unresolved externals

仔细看了下，CryptReleaseContext等这三个函数不是从advapi32.lib里导入的么？难道要加上advapi32.lib库？在项目设置的连接里把advapi32.lib加上，然后rebuil all，果然成功。

如果出现是__RTC_CheckEsp这个外部变量无法解析，很大可能是两个项目的配置不一样，比如说一个能从父项目继承什么。另外一个没有设置，就会出现这个问题。

编译eXosip可能会出现的问题：

要包含头文件：ssleay32.lib libeay32.lib Dnsapi.lib Iphlpapi.lib Ws2_32.lib osip2.lib osipparser2.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib ，其中ssleay32.lib libeay32.lib是openssl的静态库。

可能还会找不到一些无法解析的外部变量，可能是在osip的输出dll的def文件中没有加上

     osip_transaction_set_srv_record     @122

然后重新编译osip

外部变量问题，一般都是库文件的问题，记住要把库文件放在工程目录lib目录下（没有lib目录自己新建一个） 然后在工具->项目->c/c++->C++目录下把设置../../lib设置成包含的目录

其中ssleay32.lib libeay32.lib是openssl编译形成的静态链接库，可以从网上下载，或者自己编译

之外，尤其大家下载的源代码由于认为的或者是编译环境的不同，容易造成多种错误，我还碰到了个无法解析的Osip_^^^!!#@!@#!函数无法解析的情况，在osip中的def文件一查，果然缺少个122的函数文件输出声明，加进去重新编译osip，成功，在编译eXosip成功！

最后运行实例,进行项目配置：

osip及eXosip的开发方法：
将以下程序作为UAS.CPP保存

// UAS.cpp : 定义控制台应用程序的入口点。
//
# include <eXosip2/eXosip.h>
# include <stdio.h>
# include <stdlib.h>
# include <Winsock2.h>

/*
# include <netinet/in.h>
# include <sys/socket.h>
# include <sys/types.h>
*/

#pragma comment(lib, "osip2.lib")
#pragma comment(lib, "osipparser2.lib")
#pragma comment(lib, "eXosip.lib")
#pragma comment(lib, "Iphlpapi.lib")
#pragma comment(lib, "Dnsapi.lib")
#pragma comment(lib, "ws2_32.lib")

int main (int argc, char *argv[])
{

    eXosip_event_t *je = NULL;
    osip_message_t *ack = NULL;
    osip_message_t *invite = NULL;
    osip_message_t *answer = NULL;
    sdp_message_t *remote_sdp = NULL;
    int call_id, dialog_id;
    int i,j;
    int id;

    char *sour_call = "sip:24@10.16.79.24";
    char *dest_call = "sip:24@10.16.79.24:5061";//client ip

    char command;
    char tmp[4096];
    char localip[128];
    int pos = 0;

    //初始化sip
    i = eXosip_init ();
    if (i != 0)
    {
        printf ("Can't initialize eXosip!/n");
        return -1;
    }
    else
    {
        printf ("eXosip_init successfully!/n");
    }

    i = eXosip_listen_addr (IPPROTO_UDP, NULL, 5060, AF_INET, 0);
    if (i != 0)
    {
        eXosip_quit ();
        fprintf (stderr, "eXosip_listen_addr error!/nCouldn't initialize transport layer!/n");
    }

    for(;;)
    {
        //侦听是否有消息到来
        je = eXosip_event_wait (0,50);

        //协议栈带有此语句,具体作用未知

        eXosip_lock ();
        eXosip_default_action (je);
        eXosip_automatic_refresh ();
        eXosip_unlock ();

        if (je == NULL)//没有接收到消息
            continue;

        // printf ("the cid is %s, did is %s/n", je->did, je->cid);

        switch (je->type)
        {
        case EXOSIP_MESSAGE_NEW://新的消息到来
            printf (" EXOSIP_MESSAGE_NEW!/n");
            if (MSG_IS_MESSAGE (je->request))//如果接受到的消息类型是MESSAGE
            {
                osip_body_t *body;
                osip_message_get_body (je->request, 0, &body);
                printf ("I get the msg is: %s/n", body->body);
                //printf ("the cid is %s, did is %s/n", je->did, je->cid);

                //按照规则，需要回复OK信息
                eXosip_message_build_answer (je->tid, 200,&answer);
                eXosip_message_send_answer (je->tid, 200,answer);
            }
            break;

        case EXOSIP_CALL_INVITE:
            //得到接收到消息的具体信息
            printf ("Received a INVITE msg from %s:%s, UserName is %s, password is %s/n",
                    je->request->req_uri->host,
                    je->request->req_uri->port,
                    je->request->req_uri->username,
                    je->request->req_uri->password);

            //得到消息体,认为该消息就是SDP格式.
            remote_sdp = eXosip_get_remote_sdp (je->did);
            call_id = je->cid;
            dialog_id = je->did;

            eXosip_lock ();
            eXosip_call_send_answer (je->tid, 180, NULL);

            i = eXosip_call_build_answer (je->tid, 200, &answer);
            if (i != 0)
            {
                printf ("This request msg is invalid!Cann't response!/n");
                eXosip_call_send_answer (je->tid, 400, NULL);
            }
            else
            {
                snprintf (tmp, 4096,
                          "v=0/r/n"
                          "o=anonymous 0 0 IN IP4 0.0.0.0/r/n"
                          "t=1 10/r/n"
                          "a=username:rainfish/r/n"
                          "a=password:123/r/n");

                /*设置回复的SDP消息体,下一步计划分析消息体
                              没有分析消息体，直接回复原来的消息，
                              这一块做的不好。
                              */
                osip_message_set_body (answer, tmp, strlen(tmp));
                osip_message_set_content_type (answer, "application/sdp");
                eXosip_call_send_answer (je->tid, 200, answer);
                printf ("send 200 over!/n");
            }
            eXosip_unlock ();

            //显示出在sdp消息体中的attribute 的内容,里面计划存放我们的信息
            printf ("the INFO is :/n");

            while (!osip_list_eol ( &(remote_sdp->a_attributes), pos))
            {
                sdp_attribute_t *at;

                at = (sdp_attribute_t *) osip_list_get ( &remote_sdp->a_attributes, pos);
                printf ("%s : %s/n", at->a_att_field, at->a_att_value);
                //这里解释了为什么在SDP消息体中属性a里面存放必须是两列

                pos ++;
            }
            break;

        case EXOSIP_CALL_ACK:
            printf ("ACK recieved!/n");
            // printf ("the cid is %s, did is %s/n", je->did, je->cid);
            break;

        case EXOSIP_CALL_CLOSED:
            printf ("the remote hold the session!/n");
            // eXosip_call_build_ack(dialog_id, &ack);
            //eXosip_call_send_ack(dialog_id, ack);

            i = eXosip_call_build_answer (je->tid, 200, &answer);
            if (i != 0)
            {
                printf ("This request msg is invalid!Cann't response!/n");
                eXosip_call_send_answer (je->tid, 400, NULL);
            }
            else
            {
                eXosip_call_send_answer (je->tid, 200, answer);
                printf ("bye send 200 over!/n");
            }

            break;

        case EXOSIP_CALL_MESSAGE_NEW:
            /*至于该类型和EXOSIP_MESSAGE_NEW的区别，源代码这么解释的
                  request related events within calls (except INVITE)
                  EXOSIP_CALL_MESSAGE_NEW,  < announce new incoming request. response received for request outside calls
                  EXOSIP_MESSAGE_NEW,          < announce new incoming request.
                  我也不是很明白，理解是：
                  EXOSIP_CALL_MESSAGE_NEW是一个呼叫中的新的消息到来，
                  比如ring trying都算， 所以在接受到后必须判断 该消息类型，
                  EXOSIP_MESSAGE_NEW而是表示不是呼叫内的消息到来。
                  该解释有不妥地方，仅供参考。
            */
            printf(" EXOSIP_CALL_MESSAGE_NEW/n");

            if (MSG_IS_INFO(je->request) ) //如果传输的是INFO方法
            {
                eXosip_lock ();
                i = eXosip_call_build_answer (je->tid, 200, &answer);
                if (i == 0)
                {
                    eXosip_call_send_answer (je->tid, 200, answer);
                }
                eXosip_unlock ();
                {
                    osip_body_t *body;
                    osip_message_get_body (je->request, 0, &body);
                    printf ("the body is %s/n", body->body);
                }
            }
            break;

        default:
            printf ("Could not parse the msg!/n");
            break;
        }
    }
}

将以下程序作为UAC.CPP保存

// UAC.cpp : 定义控制台应用程序的入口点。
//
# include <eXosip2/eXosip.h>
# include <stdio.h>
# include <stdlib.h>
# include <Winsock2.h>

/*
＃i nclude <netinet/in.h>
＃i nclude <sys/socket.h>
＃i nclude <sys/types.h>
*/

#pragma comment(lib, "osip2.lib")
#pragma comment(lib, "osipparser2.lib")
#pragma comment(lib, "eXosip.lib")
#pragma comment(lib, "Iphlpapi.lib")
#pragma comment(lib, "Dnsapi.lib")
#pragma comment(lib, "ws2_32.lib")

int main (int argc, char *argv[])
{
    eXosip_event_t *je;
    osip_message_t *reg = NULL;
    osip_message_t *invite = NULL;
    osip_message_t *ack = NULL;
    osip_message_t *info = NULL;
    osip_message_t *message = NULL;

    int call_id, dialog_id;
    int i,flag;
    int flag1 = 1;
    int id;

    char *identity = "sip:24@10.16.79.24";
    char *registerer = "sip:10.16.79.24:5060";//server ip
    char *source_call = "sip:24@10.16.79.24";
    char *dest_call = "sip:24@10.16.79.24:5060";//server ip

    char command;
    char tmp[4096];
    char localip[128];

    printf("r     向服务器注册/n/n");
    printf("c     取消注册/n/n");
    printf("i     发起呼叫请求/n/n");
    printf("h     挂断/n/n");
    printf("q     退出程序/n/n");
    printf("s     执行方法INFO/n/n");
    printf("m     执行方法MESSAGE/n/n");

    //初始化
    i = eXosip_init ();
    if (i != 0)
    {
        printf ("Couldn't initialize eXosip!/n");
        return -1;
    }
    else
    {
        printf ("eXosip_init successfully!/n");
    }

    i = eXosip_listen_addr (IPPROTO_UDP, NULL, 5061, AF_INET, 0);
    if (i != 0)
    {
        eXosip_quit ();
        fprintf (stderr, "Couldn't initialize transport layer!/n");
        return -1;
    }

    flag = 1;

    while (flag)
    {
        printf ("please input the comand:/n");

        scanf ("%c", &command);
        getchar ();

        switch (command)
        {
        case 'r':
            printf ("This modal isn't commpleted!/n");
            break;

        case 'i':/* INVITE */
            i = eXosip_call_build_initial_invite (&invite, dest_call, source_call, NULL, "This si a call for a conversation");
            if (i != 0)
            {
                printf ("Intial INVITE failed!/n");
                break;
            }
            /*符合SDP格式,其中属性a是自定义格式,
                       也就是说可以存放自己的信息,
                       但是只能是两列,比如帐户信息
                       但是经测试,格式:v o t必不可少,原因未知,
                       估计是协议栈在传输时需要检查的
                    */
            snprintf (tmp, 4096,
                      "v=0/r/n"
                      "o=anonymous 0 0 IN IP4 0.0.0.0/r/n"
                      "t=1 10/r/n"
                      "a=username:rainfish/r/n"
                      "a=password:123/r/n");
            osip_message_set_body (invite, tmp, strlen(tmp));
            osip_message_set_content_type (invite, "application/sdp");

            eXosip_lock ();
            i = eXosip_call_send_initial_invite (invite);
            eXosip_unlock ();

            flag1 = 1;
            while (flag1)
            {
                je = eXosip_event_wait (0, 200);
                if (je == NULL)
                {
                    printf ("No response or the time is over!/n");
                    break;
                }

                switch (je->type)
                {
                case EXOSIP_CALL_INVITE:
                    printf ("a new invite reveived!/n");
                    break;

                case EXOSIP_CALL_PROCEEDING:
                    printf ("proceeding!/n");
                    break;

                case EXOSIP_CALL_RINGING:
                    printf ("ringing!/n");
                    // call_id = je->cid;
                    // dialog_id = je->did;
                    printf ("call_id is %d, dialog_id is %d /n", je->cid, je->did);
                    break;

                case EXOSIP_CALL_ANSWERED:
                    printf ("ok! connected!/n");
                    call_id = je->cid;
                    dialog_id = je->did;
                    printf ("call_id is %d, dialog_id is %d /n", je->cid, je->did);
                    eXosip_call_build_ack (je->did, &ack);
                    eXosip_call_send_ack (je->did, ack);
                    flag1 = 0;
                    break;

                case EXOSIP_CALL_CLOSED:
                    printf ("the other sid closed!/n");
                    break;

                case EXOSIP_CALL_ACK:
                    printf ("ACK received!/n");
                    break;

                default:
                    printf ("other response!/n");
                    break;
                }

                eXosip_event_free (je);
            }
            break;

        case 'h':
            printf ("Holded !/n");

            eXosip_lock ();
            eXosip_call_terminate (call_id, dialog_id);
            eXosip_unlock ();
            break;

        case 'c':
            printf ("This modal isn't commpleted!/n");
            break;

        case 's':  //传输INFO方法
            eXosip_call_build_info (dialog_id, &info);
            snprintf (tmp, 4096,  "hello,rainfish");
            osip_message_set_body (info, tmp, strlen(tmp));

            //格式可以任意设定,text/plain代表文本信息
            osip_message_set_content_type (info, "text/plain");
            eXosip_call_send_request (dialog_id, info);
            break;

        case 'm':
            /*传输MESSAGE方法,也就是即时消息，
                        和INFO方法相比，我认为主要区别，
                        是MESSAGE不用建立连接，直接传输信息，
                        而INFO必须在建立INVITE的基础上传输。
                    */
            printf ("the mothed :MESSAGE/n");
            eXosip_message_build_request (&message, "MESSAGE", dest_call, source_call, NULL);

            snprintf (tmp, 4096, "hellor rainfish");
            osip_message_set_body (message, tmp, strlen(tmp));
            //假设格式是xml
            osip_message_set_content_type (message, "text/xml");
            eXosip_message_send_request (message);
            break;

        case 'q':
            eXosip_quit ();
            printf ("Exit the setup!/n");
            flag = 0;
            break;
        }
    }
    return (0);
}