Windows下编译eXosip、osip,以及UAC和UAS的例子
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今天开始了SIP开源库的学习,我选择了osip和eXosip,但是这两个库的编译使用有些麻烦,源码下来之后编译会出现很多问题,网上也没有找到完整的编译介绍,只能一步一步的找办法解决,最后终于编译成功!先大概记录下编译过程,后面还要再整理下。
期间还向CSDN论坛求助了下,但是还没有反应:http://bbs.csdn.net/topics/390499635?page=1#post-394866714
描述:error LNK2019: 无法解析的外部符号 _osip_transaction_set_naptr_record,该符号在函数 __eXosip_transaction_init 中被引用
原因:开源代码的库有些函数没有导出,需要手动在def文件中添加
解决方法:第二步的2,3两小步就是为了解决这个问题。
第一步,下载osip和eXosip
osip: http://ftp.twaren.net/Unix/NonGNU//osip/libosip2-3.6.0.tar.gz
eXosip: http://download.savannah.gnu.org/releases/exosip/libeXosip2-3.6.0.tar.gz
第二步,解压,编译osip:
1.进入libosip2-3.6.0\platform\vsnet目录,用VS2010直接打开osip.sln文件,项目自动转换
2.更改libosip2-3.6.0\platform\vsnet\osip2.def 文件,在文件末尾追加
osip_transaction_set_naptr_record @138
3.更改libosip2-3.6.0\platform\vsnet\osipparser2.def 文件,在文件末尾追加
osip_realloc @416
osip_strcasestr @417
__osip_uri_escape_userinfo @418
4.先编译osipparser2,再编译osip2,最后在libosip2-3.6.0\platform\vsnet\Debug DLL下生成库文件:
osip2.lib
osip2.dll
osipparser2.lib
osipparser2.dll
第三步,解压,编译eXosip
进入libeXosip2-3.6.0\platform\vsnet目录,用VS2010直接打开eXosip.sln文件,项目自动转换:
1.将osip2.lib,osip2.dll,osipparser2.lib,osipparser2.dll拷贝到Debug目录下
2.C/C++ --> 预处理器 --> 预处理器定义: 删除HAVE_OPENSSL_SSL_H
3.C/C++ --> 常规 --> 附加包含目录: 将osip的头文件libosip2-3.6.0\include包含进来
4.编译,生成eXosip.lib
第四步,新建UAC例子项目
1.链接器 --> 输入 --> 附加依赖项:增加静态库引用:Dnsapi.lib;Iphlpapi.lib;Ws2_32.lib;osip2.lib;osipparser2.lib;exosip.lib;
2.C/C++ -->常规 -->附加包含目录: 将osip和eXosip的头文件libosip2-3.6.0\include、libeXosip2-3.6.0\include包含进来
3.链接器 --> 常规 --> 附加库目录:将osip和eXosip的库包含进来,libeXosip2-3.6.0\platform\vsnet\Debug
4.编译UAC代码:
#include <eXosip2/eXosip.h>#include <stdio.h>#include <stdlib.h>#include <winsock2.h>int main(int argc,char *argv[]){struct eXosip_t *context_eXosip;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;char *identity="sip:140@127.0.0.1"; //UAC1,端口是15060char *registar="sip:133@127.0.0.1:15061"; //UAS,端口是15061char *source_call="sip:140@127.0.0.1";char *dest_call="sip:133@127.0.0.1:15061";//identify和register这一组地址是和source和destination地址相同的//在这个例子中,uac和uas通信,则source就是自己的地址,而目的地址就是uac1的地址char command;char tmp[4096];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 推出程序\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");}//绑定uac自己的端口15060,并进行端口监听i=eXosip_listen_addr(IPPROTO_UDP,NULL,15060,AF_INET,0);if(i!=0){eXosip_quit();fprintf(stderr,"Couldn't initialize transport layer!\n");return -1;}flag=1;while(flag){//输入命令printf("Please input the command:\n");scanf("%c",&command);getchar();switch(command){case 'r':printf("This modal is not completed!\n");break;case 'i'://INVITE,发起呼叫请求i=eXosip_call_build_initial_invite(&invite,dest_call,source_call,NULL,"This is a call for conversation"); if(i!=0){printf("Initial 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,//但是只能有两列,比如帐户信息//但是经过测试,格式vot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); //invite SIP INVITE message to sendeXosip_unlock();//发送了INVITE消息,等待应答flag1=1;while(flag1){je=eXosip_event_wait(0,200); //Wait for an eXosip event//(超时时间秒,超时时间毫秒) if(je==NULL){printf("No response or the time is over!\n");break;}switch(je->type) //可能会到来的事件类型{case EXOSIP_CALL_INVITE: //收到一个INVITE请求printf("a new invite received!\n");break;case EXOSIP_CALL_PROCEEDING: //收到100 trying消息,表示请求正在处理中printf("proceeding!\n");break;case EXOSIP_CALL_RINGING: //收到180 Ringing应答,表示接收到INVITE请求的UAS正在向被叫用户振铃printf("ringing!\n");printf("call_id is %d,dialog_id is %d \n",je->cid,je->did);break;case EXOSIP_CALL_ANSWERED: //收到200 OK,表示请求已经被成功接受,用户应答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);//回送ack应答消息eXosip_call_build_ack(je->did,&ack);eXosip_call_send_ack(je->did,ack);flag1=0; //推出While循环break;case EXOSIP_CALL_CLOSED: //a BYE was received for this callprintf("the other sid closed!\n");break;case EXOSIP_CALL_ACK: //ACK received for 200ok to INVITE printf("ACK received!\n");break;default: //收到其他应答printf("other response!\n");break;}eXosip_event_free(je); //Free ressource in an eXosip event}break;case 'h': //挂断printf("Holded!\n");eXosip_lock();eXosip_call_terminate(call_id,dialog_id);eXosip_unlock();break;case 'c':printf("This modal is not commpleted!\n");break;case 's': //传输INFO方法eXosip_call_build_info(dialog_id,&info);_snprintf(tmp,4096,"\nThis is a sip message(Method:INFO)");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消息必须在建立INVITE的基础上传输printf("the method : MESSAGE\n");eXosip_message_build_request(&message,"MESSAGE",dest_call,source_call,NULL);//内容,方法, to ,from ,route_snprintf(tmp,4096,"This is a sip message(Method:MESSAGE)");osip_message_set_body(message,tmp,strlen(tmp));//假设格式是xmlosip_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);}
第五步,编译UAS项目:
与UAC同样的设置后,编译
# include <eXosip2/eXosip.h># include <stdio.h># include <stdlib.h># include <Winsock2.h>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:140@127.0.0.1"; char *dest_call = "sip:133@127.0.0.1:15060";//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, 15061, 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");}}}
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