服务端的开发相对来说比客户端稍微难一点,也就是给填充相关结构体的时候,需要一点一点的去查阅,验证各个结构中各个成员各自代表什么意思,以及对应的功能需要是那个接口实现,这是开发服务端最头疼的事情。(在开发过程中郁闷了好久,后面是通过搜索工具抓包海康设备来填充相关信息的)开始切入主题了,准备服务端的开发了。
同理需要前面生成的代码,这个时候较之客户端的开发,需要在代码生成的时候之前生成的soapServer.c文件了,当放在客户端测试目录下用makefile编译的时候,你可能会很惊讶,怎么这么多错误,这么多函数报错,而且都是没有定义呢?
别紧张,这些接口就是服务端开发需要实现的!即使开发不需要使用,但是根据onvif协议,也是需要给函数一个实现体的,具体的这些函数就需要看看soapServer.c文件里的soap_serve_request函数,这里我贴出来一部分如下:
- ifndef WITH_NOSERVEREQUEST
- SOAP_FMAC5 int SOAP_FMAC6 soap_serve_request(struct soap *soap)
- {
- soap_peek_element(soap);
- if (!soap_match_tag(soap, soap->tag, "wsdd:Hello"))
- return soap_serve___wsdd__Hello(soap);
- if (!soap_match_tag(soap, soap->tag, "wsdd:Bye"))
- return soap_serve___wsdd__Bye(soap);
- if (!soap_match_tag(soap, soap->tag, "wsdd:Probe"))
- return soap_serve___wsdd__Probe(soap);
- if (!soap_match_tag(soap, soap->tag, "wsdd:ProbeMatches"))
- return soap_serve___wsdd__ProbeMatches(soap);
- if (!soap_match_tag(soap, soap->tag, "wsdd:Resolve"))
- return soap_serve___wsdd__Resolve(soap);
- if (!soap_match_tag(soap, soap->tag, "wsdd:ResolveMatches"))
- return soap_serve___wsdd__ResolveMatches(soap);
- if (!soap_match_tag(soap, soap->tag, "ns1:GetSupportedActions"))
- return soap_serve___ns1__GetSupportedActions(soap);
- if (!soap_match_tag(soap, soap->tag, "ns1:GetActions"))
- return soap_serve___ns1__GetActions(soap);
- if (!soap_match_tag(soap, soap->tag, "ns1:CreateActions"))
- return soap_serve___ns1__CreateActions(soap);
- if (!soap_match_tag(soap, soap->tag, "ns1:DeleteActions"))
- return soap_serve___ns1__DeleteActions(soap);
- if (!soap_match_tag(soap, soap->tag, "ns1:ModifyActions"))
- return soap_serve___ns1__ModifyActions(soap);
- if (!soap_match_tag(soap, soap->tag, "ns1:GetServiceCapabilities"))
- .
- .
- .
- //当然了,后来还有很长,很多了,具体实际开发可以根据需要来实现对应的函数体就好了
后面还有很多系列函数,都是在对应了接口中调用了需要服务端实现的接口函数,代码框架只是有申明,没有实现,所以开发服务端的第一步,就是需要根据这里,把所以报错没有实现的函数全部实现掉,但是给一个函数体就好,后期开发再确定需要实现那些功能,再一个一个的接口具体实现,所以接下来就是写代码了,即使是拷贝复制工作,你也会有一种手要断了的赶觉的。我记得当时我就是一个整个下午在ctrl+ v 选中,然后p 粘贴.最后弄完眼睛都花了。
因为每个函数的可以用相同的函数体来实现,所以写一个简单宏来代替是比较方面而且直观的方法,我的实现如下:
- #define ONVIF_NOT_IMPLEMENTED_FUNC(soap, namespaces) \
- if( namespaces != NULL) \
- soap_set_namespaces(soap, namespaces); \
- printf("Func: %s, Path: %s \n", __func__, soap->path); \
- return soap_receiver_fault_subcode(soap, "test:Action Not Supported", "Test: Not Implemented ", "The requested action is not implemented ");
好了有了前面的准备工作开始写发现函数了,设备端的回复搜索的接口函数为__wsdd__Probe__wsdd__Probe,实现如下:
- int SOAP_FMAC6 __wsdd__Probe(struct soap* soap, struct wsdd__ProbeType *wsdd__Probe)
- {
- printf(" \n ##### Start __wsdd__Probe ##### \n");
- char _IPAddr[64] = {0};
- char _HwId[256] = {0};
- wsdd__ProbeMatchesType ProbeMatches;
- ProbeMatches.ProbeMatch = (struct wsdd__ProbeMatchType *)soap_malloc(soap, sizeof(struct wsdd__ProbeMatchType));
- memset(ProbeMatches.ProbeMatch, 0, sizeof(struct wsdd__ProbeMatchType));
- ProbeMatches.ProbeMatch->XAddrs = (char *)soap_malloc(soap, sizeof(char) * 256);
- memset(ProbeMatches.ProbeMatch->XAddrs, '\0', sizeof(char) * 256);
- ProbeMatches.ProbeMatch->Types = (char *)soap_malloc(soap, sizeof(char) * 256);
- memset(ProbeMatches.ProbeMatch->Types, '\0', sizeof(char) * 256);
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties = (struct wsa__ReferencePropertiesType*)soap_malloc(soap,sizeof(struct wsa__ReferencePropertiesType));
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties, 0, sizeof(struct wsa__ReferencePropertiesType));
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters = (struct wsa__ReferenceParametersType*)soap_malloc(soap,sizeof(struct wsa__ReferenceParametersType));
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters, 0, sizeof(struct wsa__ReferenceParametersType));
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName = (struct wsa__ServiceNameType*)soap_malloc(soap,sizeof(struct wsa__ServiceNameType));
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName, 0, sizeof(struct wsa__ServiceNameType));
- ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType = (char **)soap_malloc(soap, sizeof(char *) * 256);
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType, 0, sizeof(char *) * 256);
- ProbeMatches.ProbeMatch->wsa__EndpointReference.__any = (char **)soap_malloc(soap, sizeof(char*) * 256);
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.__any, 0, sizeof(char*) * 256);
- ProbeMatches.ProbeMatch->wsa__EndpointReference.__anyAttribute = (char *)soap_malloc(soap, sizeof(char) * 256);
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.__anyAttribute, 0, sizeof(char) * 256);
- ProbeMatches.ProbeMatch->wsa__EndpointReference.Address = (char *)soap_malloc(soap, sizeof(char) * 256);
- memset(ProbeMatches.ProbeMatch->wsa__EndpointReference.Address, 0, sizeof(char) * 256);
- //这里是一个uid,我在实际开发的过程中是的设备的本身mac地址,这里我取了一个mac地址的地址
- strcpy(_HwId, "urn:uuid:20131228-AABB-CCDD-EEFF-010203040506");
- //这是是需要回复给给客户端的基本信息.设备的ip地址以及通信端口
- sprintf(_IPAddr, "http://%d.%d.%d.%d:%d/onvif/device_service", 192,168,12,103, 8899);
- ProbeMatches.__sizeProbeMatch = 1;
- ProbeMatches.ProbeMatch->Scopes = (struct wsdd__ScopesType*)soap_malloc(soap, sizeof(struct wsdd__ScopesType) * ProbeMatches.__sizeProbeMatch);
- memset(ProbeMatches.ProbeMatch->Scopes, 0, sizeof(struct wsdd__ScopesType) * ProbeMatches.__sizeProbeMatch);
- //Scopes MUST BE
- ProbeMatches.ProbeMatch->Scopes->__item =(char *)soap_malloc(soap, 1024);
- memset(ProbeMatches.ProbeMatch->Scopes->__item, '\0', 1024);
- strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/type/Network_Video_Transmitter ");
- strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/type/video_encoder ");
- strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/type/audio_encoder ");
- strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/location/city/CSDN ");
- strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/name/csder ");
- strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/hardware/TEST_Onvif ");
- ProbeMatches.ProbeMatch->Scopes->MatchBy = NULL;
- strcpy(ProbeMatches.ProbeMatch->XAddrs, _IPAddr);
- strcpy(ProbeMatches.ProbeMatch->Types, wsdd__Probe->Types);
- printf("wsdd__Probe->Types=%s\n",wsdd__Probe->Types);
- ProbeMatches.ProbeMatch->MetadataVersion = 1;
- //ws-discovery规定 为可选项
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties->__size = 0;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties->__any = NULL;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters->__size = 0;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters->__any = NULL;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType[0] = (char *)soap_malloc(soap, sizeof(char) * SMALL_256);
- //ws-discovery规定 为可选项
- strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType[0], "ttl");
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName->__item = NULL;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName->PortName = NULL;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName->__anyAttribute = NULL;
- ProbeMatches.ProbeMatch->wsa__EndpointReference.__any[0] = (char *)soap_malloc(soap, sizeof(char) * SMALL_256);
- strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.__any[0], "Any");
- strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.__anyAttribute, "Attribute");
- ProbeMatches.ProbeMatch->wsa__EndpointReference.__size = 0;
- strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.Address, _HwId);
- soap->header->wsa__To = (char *)"http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous";
- soap->header->wsa__Action = (char *)"http://schemas.xmlsoap.org/ws/2005/04/discovery/ProbeMatches";
- soap->header->wsa__RelatesTo = (struct wsa__Relationship*)soap_malloc(soap, sizeof(struct wsa__Relationship));
- soap->header->wsa__RelatesTo->__item = soap->header->wsa__MessageID;
- soap->header->wsa__RelatesTo->RelationshipType = NULL;
- soap->header->wsa__RelatesTo->__anyAttribute = NULL;
- soap->header->wsa__MessageID =(char *)soap_malloc(soap, sizeof(char) * 256);
- strcpy(soap->header->wsa__MessageID,_HwId+4); //前面四个字节可以是不需要的
- if (SOAP_OK == soap_send___wsdd__ProbeMatches(soap, "http://", NULL, &ProbeMatches))
- {
- // printf("send ProbeMatches success !\n");
- return SOAP_OK;
- }
- printf("[%d] soap error: %d, %s, %s\n", __LINE__, soap->error, *soap_faultcode(soap), *soap_faultstring(soap));
- return soap->error;;
- }
搜索的回复函数本分就完成了,现在需要要的工作就是在设备端开启一个udp的socket了。为了不影响设备端其他的业务,所以建议设备端另外开一个线程让socket运行起来,因为这个是一个一直循环的操作了,基本的代码如下:
- int Onvif_DeviceDiscovery()
- {
- struct soap udp_soap;
- int retval = -1;
- soap_init1(&udp_soap, SOAP_IO_UDP | SOAP_IO_FLUSH);
- udp_soap.connect_flags = SO_BROADCAST;
- udp_soap.port = 3702;
- soap_set_namespaces( &udp_soap, namespaces);
- SOAP_SOCKET udp_sock = -1;
- udp_soap->omode = SOAP_IO_UDP;
- udp_soap->bind_flags = SO_REUSEADDR;
- udp_sock = soap_bind(udp_soap, NULL, udp_soap->port, 100);
- if( (udp_sock < 0) && (udp_sock == SOAP_INVALID_SOCKET))
- {
- close(udp_sock);
- printf(" soap_bind failed! %s \n", strerror(errno));
- return -1;
- }
- //这个接口设置一些广播的属性值,下面也有实现提出,
- retval = udp_add_multicast(&udp_soap);
- if(retval != 0 )
- {
- printf(" udp add multicast failed: %s \n", strerror(errno));
- return -1;
- }
- //每次都是在此循环中接收客户端发过来的广播请求,然后服务端调用__wsdd__Probe函数,返回服务端的一些基本信息
- while(1)
- {
- if( soap_serve( &udp_soap ) != 0)
- {
- soap_print_fault(&udp_soap, stderr);
- }
- soap_destroy(&udp_soap);
- soap_end( &udp_soap);
- }
- soap_done(&udp_soap);
- return 0;
- }
- int udp_add_multicast( struct soap* socksoap)
- {
- // set a route for multicast traffic
- // 这个执行一个系统命令,之前一直无法被搜索到,后来查了资料才知道需要启动下
- system("route add -net 224.0.0.0 netmask 224.0.0.0 eth0");
- int loop;
- int retval = -1;
- struct ip_mreq mreqcon;
- loop = 1;
- //设置组播的属性
- retval = setsockopt(socksoap->master, IPPROTO_IP, IP_MULTICAST_LOOP, &loop, sizeof(loop));
- if(retval != 0)
- {
- printf("setsockopt: IP_MULTICAST_LOOP failed! %s\n ", strerror(errno));
- return -1;
- }
- //绑定组播的ip地址
- mreqcon.imr_multiaddr.s_addr = inet_addr("239.255.255.250");
- mreqcon.imr_interface.s_addr = htonl(INADDR_ANY);
- if( (signed int )mreqcon.imr_multiaddr.s_addr == -1)
- {
- printf("239.255.255.250 not a legal multicast address! %s\n", strerror(errno));
- return -1;
- }
- retval = setsockopt(socksoap->master, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreqcon, sizeof(mreqcon));
- if( retval != 0 )
- {
- printf("setsockopt: IP_ADD_MEMBERSHIP failed! %s\n ", strerror(errno));
- return -1;
- }
- return 0;
- }
完成这些代码之后,通过onvif搜索工具,搜索的结果图如下
看到基本信息也就是上面代码中填写了!设备端的发现功能也就实现了!
纵观前后,其实设备端的发现只是在已经有的代码框架基础上操作两步就好!
1 创建socket,搭建广播接收回复服务
2 实现__wsdd__Probe函数!
提供大家一个不错的网站:onvif server