说明：网上关于ONVIF开发的文章并不多，也更找不到具体的实例来入门学习。只能靠翻阅各种Specification摸索中前进，下面是最近几天的成果。调通了服务端（或者说设备端）的Discovery，使用OnvifTestTool12.06能够搜到我的设备。【来自http://blog.csdn.net/ghostyu】

1、在使用wsdl2h产生头文件前需要修改typemap.dat，

修改的依据在这里：http://www.cs.fsu.edu/~engelen/soap.html，在FAQ页面下的How do I use gSOAP for the ONVIF specifications?

  1. #Use gSOAP 2.8.10 and up. In the typemap.dat file used by wsdl2h, add:
  2. #   ONVIF recommended prefixes
  3. tds = "http://www.onvif.org/ver10/device/wsdl"
  4. tev = "http://www.onvif.org/ver10/events/wsdl"
  5. tls = "http://www.onvif.org/ver10/display/wsdl"
  6. tmd = "http://www.onvif.org/ver10/deviceIO/wsdl"
  7. timg    = "http://www.onvif.org/ver20/imaging/wsdl"
  8. trt = "http://www.onvif.org/ver10/media/wsdl"
  9. tptz    = "http://www.onvif.org/ver20/ptz/wsdl"
  10. trv = "http://www.onvif.org/ver10/receiver/wsdl"
  11. trc = "http://www.onvif.org/ver10/recording/wsdl"
  12. tse = "http://www.onvif.org/ver10/search/wsdl"
  13. trp = "http://www.onvif.org/ver10/replay/wsdl"
  14. tan = "http://www.onvif.org/ver20/analytics/wsdl"
  15. tad = "http://www.onvif.org/ver10/analyticsdevice/wsdl"
  16. tdn = "http://www.onvif.org/ver10/network/wsdl"
  17. tt  = "http://www.onvif.org/ver10/schema"
  18. #   OASIS recommended prefixes
  19. wsnt    = "http://docs.oasis-open.org/wsn/b-2"
  20. wsntw   = "http://docs.oasis-open.org/wsn/bw-2"
  21. wsrfbf  = "http://docs.oasis-open.org/wsrf/bf-2"
  22. wsrfr   = "http://docs.oasis-open.org/wsrf/r-2"
  23. wsrfrw  = "http://docs.oasis-open.org/wsrf/rw-2"
  24. wstop   = "http://docs.oasis-open.org/wsn/t-1"
  25. #   WS-Discovery 1.0 remapping
  26. wsdd10__HelloType       = | wsdd__HelloType
  27. wsdd10__ByeType         = | wsdd__ByeType
  28. wsdd10__ProbeType       = | wsdd__ProbeType
  29. wsdd10__ProbeMatchesType    = | wsdd__ProbeMatchesType
  30. wsdd10__ProbeMatchType      = | wsdd__ProbeMatchType
  31. wsdd10__ResolveType     = | wsdd__ResolveType
  32. wsdd10__ResolveMatchesType  = | wsdd__ResolveMatchesType
  33. wsdd10__ResolveMatchType    = | wsdd__ResolveMatchType
  34. #   SOAP-ENV mapping
  35. SOAP_ENV__Envelope  = struct SOAP_ENV__Envelope { struct SOAP_ENV__Header *SOAP_ENV__Header; _XML SOAP_ENV__Body; }; | struct SOAP_ENV__Envelope
  36. SOAP_ENV__Header    = | struct SOAP_ENV__Header
  37. SOAP_ENV__Fault     = | struct SOAP_ENV__Fault
  38. SOAP_ENV__Detail    = | struct SOAP_ENV__Detail
  39. SOAP_ENV__Code      = | struct SOAP_ENV__Code
  40. SOAP_ENV__Subcode   = | struct SOAP_ENV__Subcode
  41. SOAP_ENV__Reason    = | struct SOAP_ENV__Reason
#Use gSOAP 2.8.10 and up. In the typemap.dat file used by wsdl2h, add:

#	ONVIF recommended prefixes

tds	= "http://www.onvif.org/ver10/device/wsdl"

tev	= "http://www.onvif.org/ver10/events/wsdl"

tls	= "http://www.onvif.org/ver10/display/wsdl"

tmd	= "http://www.onvif.org/ver10/deviceIO/wsdl"

timg	= "http://www.onvif.org/ver20/imaging/wsdl"

trt	= "http://www.onvif.org/ver10/media/wsdl"

tptz	= "http://www.onvif.org/ver20/ptz/wsdl"

trv	= "http://www.onvif.org/ver10/receiver/wsdl"

trc	= "http://www.onvif.org/ver10/recording/wsdl"

tse	= "http://www.onvif.org/ver10/search/wsdl"

trp	= "http://www.onvif.org/ver10/replay/wsdl"

tan	= "http://www.onvif.org/ver20/analytics/wsdl"

tad	= "http://www.onvif.org/ver10/analyticsdevice/wsdl"

tdn	= "http://www.onvif.org/ver10/network/wsdl"

tt	= "http://www.onvif.org/ver10/schema"

#	OASIS recommended prefixes

wsnt	= "http://docs.oasis-open.org/wsn/b-2"

wsntw	= "http://docs.oasis-open.org/wsn/bw-2"

wsrfbf	= "http://docs.oasis-open.org/wsrf/bf-2"

wsrfr	= "http://docs.oasis-open.org/wsrf/r-2"

wsrfrw  = "http://docs.oasis-open.org/wsrf/rw-2"

wstop	= "http://docs.oasis-open.org/wsn/t-1"

#	WS-Discovery 1.0 remapping

wsdd10__HelloType		= | wsdd__HelloType

wsdd10__ByeType			= | wsdd__ByeType

wsdd10__ProbeType		= | wsdd__ProbeType

wsdd10__ProbeMatchesType	= | wsdd__ProbeMatchesType

wsdd10__ProbeMatchType		= | wsdd__ProbeMatchType

wsdd10__ResolveType		= | wsdd__ResolveType

wsdd10__ResolveMatchesType	= | wsdd__ResolveMatchesType

wsdd10__ResolveMatchType	= | wsdd__ResolveMatchType

#	SOAP-ENV mapping

SOAP_ENV__Envelope	= struct SOAP_ENV__Envelope { struct SOAP_ENV__Header *SOAP_ENV__Header; _XML SOAP_ENV__Body; }; | struct SOAP_ENV__Envelope

SOAP_ENV__Header	= | struct SOAP_ENV__Header

SOAP_ENV__Fault		= | struct SOAP_ENV__Fault

SOAP_ENV__Detail	= | struct SOAP_ENV__Detail

SOAP_ENV__Code		= | struct SOAP_ENV__Code

SOAP_ENV__Subcode	= | struct SOAP_ENV__Subcode

SOAP_ENV__Reason	= | struct SOAP_ENV__Reason

2、根据onvif官网提供的remotediscovery.wsdl产生onvif.h头文件

关于onvif所有的wsdl都在这里：http://www.onvif.org/Documents/Specifications.aspx中的ONVIF WSDL and XML Schemas Specifications一节，虽然可以全部下载为wsdl文件，但是wsdl文件中存在相互依赖的关系，并且是带有存储的依赖，所以最好直接使用url来产生头文件，不要下载下来。

  1. wsdl2h -o onvif.h -c -s -t ./typemap.dat http://www.onvif.org/onvif/ver10/network/wsdl/remotediscovery.wsdl
wsdl2h -o onvif.h -c -s -t ./typemap.dat http://www.onvif.org/onvif/ver10/network/wsdl/remotediscovery.wsdl

3、使用onvif.h来产生骨架代码

  1. soapcpp2 -c onvif.h -x -I /root/onvif/gsoap-2.8/gsoap/import -I /root/onvif/gsoap-2.8/gsoap/
soapcpp2 -c onvif.h -x -I /root/onvif/gsoap-2.8/gsoap/import -I /root/onvif/gsoap-2.8/gsoap/

4、ProbeMatches代码

这样就创建了基本的服务端和客户端的代码了，下面需要添加具体的代码了。

其中包括：

(1)创建组播用的udp socket，绑定组播地址为239.255.255.250，端口为3702，因为ws-discovery的组播地址和端口就是为239.255.255.250和3702

(2)在产生的Probe函数中添加ProbeMatches代码
首先是udp socket

  1. int bind_server_udp1(int server_s)
  2. {
  3. struct sockaddr_in local_addr;
  4. memset(&local_addr,0,sizeof(local_addr));
  5. local_addr.sin_family = AF_INET;
  6. local_addr.sin_addr.s_addr = htonl(INADDR_ANY);
  7. local_addr.sin_port = htons(3702);
  8. return bind(server_s,(struct sockaddr*)&local_addr,sizeof(local_addr));
  9. }
  10. static int create_server_socket_udp(void)
  11. {
  12. int server_udp;
  13. unsigned char one = 1;
  14. int sock_opt = 1;
  15. //server_udp = socket(PF_INET, SOCK_DGRAM, 0);
  16. server_udp = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
  17. if (server_udp == -1) {
  18. printf("unable to create socket\n");
  19. }
  20. /* reuse socket addr */
  21. if ((setsockopt(server_udp, SOL_SOCKET, SO_REUSEADDR, (void *) &sock_opt,
  22. sizeof (sock_opt))) == -1) {
  23. printf("setsockopt\n");
  24. }
  25. if ((setsockopt(server_udp, IPPROTO_IP, IP_MULTICAST_LOOP,
  26. &one, sizeof (unsigned char))) == -1) {
  27. printf("setsockopt\n");
  28. }
  29. struct ip_mreq mreq;
  30. mreq.imr_multiaddr.s_addr = inet_addr("239.255.255.250");
  31. mreq.imr_interface.s_addr = htonl(INADDR_ANY);
  32. if(setsockopt(server_udp,IPPROTO_IP,IP_ADD_MEMBERSHIP,&mreq,sizeof(mreq))==-1){
  33. perror("memberchip error\n");
  34. }
  35. return server_udp;
  36. }
int bind_server_udp1(int server_s)

{

	struct sockaddr_in local_addr;

	memset(&local_addr,0,sizeof(local_addr));

	local_addr.sin_family = AF_INET;

	local_addr.sin_addr.s_addr = htonl(INADDR_ANY);

	local_addr.sin_port = htons(3702);

	return bind(server_s,(struct sockaddr*)&local_addr,sizeof(local_addr));

}

static int create_server_socket_udp(void)

{

    int server_udp;

	unsigned char one = 1;

	int sock_opt = 1;

	//server_udp = socket(PF_INET, SOCK_DGRAM, 0);

    server_udp = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);

    if (server_udp == -1) {

        printf("unable to create socket\n");

    }

    /* reuse socket addr */

    if ((setsockopt(server_udp, SOL_SOCKET, SO_REUSEADDR, (void *) &sock_opt,

                    sizeof (sock_opt))) == -1) {

        printf("setsockopt\n");

    }

    if ((setsockopt(server_udp, IPPROTO_IP, IP_MULTICAST_LOOP,

                       &one, sizeof (unsigned char))) == -1) {

        printf("setsockopt\n");

    }

	struct ip_mreq mreq;

	mreq.imr_multiaddr.s_addr = inet_addr("239.255.255.250");

	mreq.imr_interface.s_addr = htonl(INADDR_ANY);

	if(setsockopt(server_udp,IPPROTO_IP,IP_ADD_MEMBERSHIP,&mreq,sizeof(mreq))==-1){

		perror("memberchip error\n");

	}

    return server_udp;

}

需要注意几点：1/设置socket属性SO_REUSEADDR，2、设置socket属性IP_ADD_MEMBERSHIP，目的是让3702的端口能够重复绑定，一家加入组播组。

其次是添加ProbeMatches代码
(1)首先复制client的soap_send___wsdd__ProbeMatches函数到服务端来，因为soap_send___wsdd__ProbeMatches已经写好了用于响应Probe消息的框架了，不用白不用啊。
(2)编写__wsdd__Probe函数，添加如下内容

  1. int  __wsdd__Probe(struct soap* soap, struct wsdd__ProbeType *wsdd__Probe)
  2. {
  3. DBG("__wsdd__Probe\n");
  4. char macaddr[6];
  5. char _IPAddr[INFO_LENGTH];
  6. char _HwId[1024];
  7. wsdd__ProbeMatchesType ProbeMatches;
  8. ProbeMatches.ProbeMatch = (struct wsdd__ProbeMatchType *)soap_malloc(soap, sizeof(struct wsdd__ProbeMatchType));
  9. ProbeMatches.ProbeMatch->XAddrs = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
  10. ProbeMatches.ProbeMatch->Types = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
  11. ProbeMatches.ProbeMatch->Scopes = (struct wsdd__ScopesType*)soap_malloc(soap,sizeof(struct wsdd__ScopesType));
  12. ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties = (struct wsa__ReferencePropertiesType*)soap_malloc(soap,sizeof(struct wsa__ReferencePropertiesType));
  13. ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters = (struct wsa__ReferenceParametersType*)soap_malloc(soap,sizeof(struct wsa__ReferenceParametersType));
  14. ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName = (struct wsa__ServiceNameType*)soap_malloc(soap,sizeof(struct wsa__ServiceNameType));
  15. ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType = (char **)soap_malloc(soap, sizeof(char *) * SMALL_INFO_LENGTH);
  16. ProbeMatches.ProbeMatch->wsa__EndpointReference.__any = (char **)soap_malloc(soap, sizeof(char*) * SMALL_INFO_LENGTH);
  17. ProbeMatches.ProbeMatch->wsa__EndpointReference.__anyAttribute = (char *)soap_malloc(soap, sizeof(char) * SMALL_INFO_LENGTH);
  18. ProbeMatches.ProbeMatch->wsa__EndpointReference.Address = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
  19. macaddr[0]=0x01;macaddr[1]=0x01;macaddr[2]=0x01;macaddr[3]=0x01;macaddr[4]=0x01;macaddr[5]=0x01;
  20. sprintf(_HwId,"urn:uuid:2419d68a-2dd2-21b2-a205-%02X%02X%02X%02X%02X%02X",macaddr[0], macaddr[1], macaddr[2], macaddr[3], macaddr[4], macaddr[5]);
  21. sprintf(_IPAddr, "http://%03d.%03d.%1d.%03d/onvif/device_service", 192, 168, 1, 233);
  22. ProbeMatches.__sizeProbeMatch = 1;
  23. ProbeMatches.ProbeMatch->Scopes->__item =(char *)soap_malloc(soap, 1024);
  24. memset(ProbeMatches.ProbeMatch->Scopes->__item,0,sizeof(ProbeMatches.ProbeMatch->Scopes->__item));
  25. //Scopes MUST BE
  26. strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/type/NetworkVideoTransmitter");
  27. ProbeMatches.ProbeMatch->Scopes->MatchBy = NULL;
  28. strcpy(ProbeMatches.ProbeMatch->XAddrs, _IPAddr);
  29. strcpy(ProbeMatches.ProbeMatch->Types, wsdd__Probe->Types);
  30. DBG("wsdd__Probe->Types=%s\n",wsdd__Probe->Types);
  31. ProbeMatches.ProbeMatch->MetadataVersion = 1;
  32. //ws-discovery规定 为可选项
  33. ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties->__size = 0;
  34. ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties->__any = NULL;
  35. ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters->__size = 0;
  36. ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters->__any = NULL;
  37. ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType[0] = (char *)soap_malloc(soap, sizeof(char) * SMALL_INFO_LENGTH);
  38. //ws-discovery规定 为可选项
  39. strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType[0], "ttl");
  40. ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName->__item = NULL;
  41. ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName->PortName = NULL;
  42. ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName->__anyAttribute = NULL;
  43. ProbeMatches.ProbeMatch->wsa__EndpointReference.__any[0] = (char *)soap_malloc(soap, sizeof(char) * SMALL_INFO_LENGTH);
  44. strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.__any[0], "Any");
  45. strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.__anyAttribute, "Attribute");
  46. ProbeMatches.ProbeMatch->wsa__EndpointReference.__size = 0;
  47. strcpy(ProbeMatches.ProbeMatch->wsa__EndpointReference.Address, _HwId);
  48. /*注释的部分为可选，注释掉onvif test也能发现ws-d*/
  49. //soap->header->wsa__To = "http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous";
  50. //soap->header->wsa__Action = "http://schemas.xmlsoap.org/ws/2005/04/discovery/ProbeMatches";
  51. soap->header->wsa__RelatesTo = (struct wsa__Relationship*)soap_malloc(soap, sizeof(struct wsa__Relationship));
  52. //it's here
  53. soap->header->wsa__RelatesTo->__item = soap->header->wsa__MessageID;
  54. soap->header->wsa__RelatesTo->RelationshipType = NULL;
  55. soap->header->wsa__RelatesTo->__anyAttribute = NULL;
  56. soap->header->wsa__MessageID =(char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);
  57. strcpy(soap->header->wsa__MessageID,_HwId+4);
  58. /* send over current socket as HTTP OK response: */
  59. /*测试过，第二参数必须http，action随意*/
  60. soap_send___wsdd__ProbeMatches(soap, "http://", NULL, &ProbeMatches);
  61. return SOAP_OK;
  62. }
int  __wsdd__Probe(struct soap* soap, struct wsdd__ProbeType *wsdd__Probe)

{

	DBG("__wsdd__Probe\n");

	char macaddr[6];

	char _IPAddr[INFO_LENGTH];

	char _HwId[1024];

	wsdd__ProbeMatchesType ProbeMatches;

	ProbeMatches.ProbeMatch = (struct wsdd__ProbeMatchType *)soap_malloc(soap, sizeof(struct wsdd__ProbeMatchType));

	ProbeMatches.ProbeMatch->XAddrs = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);

	ProbeMatches.ProbeMatch->Types = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);

	ProbeMatches.ProbeMatch->Scopes = (struct wsdd__ScopesType*)soap_malloc(soap,sizeof(struct wsdd__ScopesType));

	ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceProperties = (struct wsa__ReferencePropertiesType*)soap_malloc(soap,sizeof(struct wsa__ReferencePropertiesType));

	ProbeMatches.ProbeMatch->wsa__EndpointReference.ReferenceParameters = (struct wsa__ReferenceParametersType*)soap_malloc(soap,sizeof(struct wsa__ReferenceParametersType));

	ProbeMatches.ProbeMatch->wsa__EndpointReference.ServiceName = (struct wsa__ServiceNameType*)soap_malloc(soap,sizeof(struct wsa__ServiceNameType));

	ProbeMatches.ProbeMatch->wsa__EndpointReference.PortType = (char **)soap_malloc(soap, sizeof(char *) * SMALL_INFO_LENGTH);

	ProbeMatches.ProbeMatch->wsa__EndpointReference.__any = (char **)soap_malloc(soap, sizeof(char*) * SMALL_INFO_LENGTH);

	ProbeMatches.ProbeMatch->wsa__EndpointReference.__anyAttribute = (char *)soap_malloc(soap, sizeof(char) * SMALL_INFO_LENGTH);

	ProbeMatches.ProbeMatch->wsa__EndpointReference.Address = (char *)soap_malloc(soap, sizeof(char) * INFO_LENGTH);

	macaddr[0]=0x01;macaddr[1]=0x01;macaddr[2]=0x01;macaddr[3]=0x01;macaddr[4]=0x01;macaddr[5]=0x01;

	sprintf(_HwId,"urn:uuid:2419d68a-2dd2-21b2-a205-%02X%02X%02X%02X%02X%02X",macaddr[0], macaddr[1], macaddr[2], macaddr[3], macaddr[4], macaddr[5]);

	sprintf(_IPAddr, "http://%03d.%03d.%1d.%03d/onvif/device_service", 192, 168, 1, 233);

	ProbeMatches.__sizeProbeMatch = 1;

	ProbeMatches.ProbeMatch->Scopes->__item =(char *)soap_malloc(soap, 1024);

	memset(ProbeMatches.ProbeMatch->Scopes->__item,0,sizeof(ProbeMatches.ProbeMatch->Scopes->__item));	

	//Scopes MUST BE

	strcat(ProbeMatches.ProbeMatch->Scopes->__item, "onvif://www.onvif.org/type/NetworkVideoTransmitter");

	ProbeMatches.ProbeMatch->Scopes->MatchBy = NULL;

	strcpy(ProbeMatches.ProbeMatch->XAddrs, _IPAddr);

	strcpy(ProbeMatches.ProbeMatch->Types, wsdd__Probe->Types);

	DBG("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_INFO_LENGTH);

	//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_INFO_LENGTH);

	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);

	/*注释的部分为可选，注释掉onvif test也能发现ws-d*/

	//soap->header->wsa__To = "http://schemas.xmlsoap.org/ws/2004/08/addressing/role/anonymous";

	//soap->header->wsa__Action = "http://schemas.xmlsoap.org/ws/2005/04/discovery/ProbeMatches";

	soap->header->wsa__RelatesTo = (struct wsa__Relationship*)soap_malloc(soap, sizeof(struct wsa__Relationship));

	//it's here

	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) * INFO_LENGTH);

	strcpy(soap->header->wsa__MessageID,_HwId+4);

    /* send over current socket as HTTP OK response: */

	/*测试过，第二参数必须http，action随意*/

    soap_send___wsdd__ProbeMatches(soap, "http://", NULL, &ProbeMatches);

	return SOAP_OK;

}

想要写出上述代码，是一定要了解SOAP格式的，在WS-Discovery中描述了discovery所用的soap格式

1首先是了解消息头header和ProbeMatches中的内容，非常重要，可以参考这里http://www.w3.org/Submission/ws-addressing/  最好详细的学习一下，里面的内容非常重要。

2其次需要理解的是，其实当你看完ws-addressing后你会发现，骨架代码中的结构体和SOAP消息中的内容是一一对应的，例如：

结构体osap->header对应SOAP消息的<SOAP-ENV:Header></SOAP-ENV:Header>中的内容，包含在header里的内容当然会包含在SOAP的header内。例如：

结构体soap->header->wsa__RelatesTo对应的是<wsa:RelatesTo></wsa:RelatesTo>。

3最后需要理解的是，在代码中的"__"双下划线一般对应xml中的命名空间的":"，下划线前是命名空间，后是具体内容。

4最后的最后是要详细的阅读ONVIF Core Specification

下图为响应OnvifTestTool的Probe命令的SOAP消息

结合上图再分析代码就亲切多了。在ONVIF Core Specification的7.3.2.2  Scopes 一节描述了onvif需要的Scopes，这个是需要在程序里填充，具体填充什么，文档里说的很明确：

注意点是在太多，随便漏掉一个都可能会导致搜不到设备，下图是非常重要的一个：

SOAP1.1和SOAP1.2所使用的SOAP-ENV是不同的，ONVIF使用的是SOAP1.1，如果soapcpp2产生的nsmap文件中的SOAP-ENV是SOAP1.2版本的话，那么OnvifTestTool是不会识别设备发出的SOAP消息的。

5、该main函数登场了

  1. int main()
  2. {
  3. int server_udp;
  4. int retval=0;
  5. struct soap *soap_udp;
  6. int fault_flag = 0;
  7. server_udp = create_server_socket_udp();
  8. bind_server_udp1(server_udp);
  9. while(1){
  10. soap_udp=soap_new();
  11. soap_init1(soap_udp, SOAP_IO_UDP);
  12. soap_udp->master = server_udp;
  13. soap_udp->socket = server_udp;
  14. soap_udp->errmode = 0;
  15. soap_udp->bind_flags = 1;
  16. if (!soap_valid_socket(soap_bind(soap_udp, NULL, 3702, 100)))
  17. {
  18. soap_print_fault(soap_udp, stderr);
  19. }
  20. fprintf(stderr,"soap_serve starting..\n");
  21. retval = soap_serve(soap_udp); //阻塞在这里
  22. fprintf(stderr,"retval=%d\n",retval);
  23. if(retval && !(fault_flag))
  24. {
  25. fault_flag = 1;
  26. }
  27. else if(!retval)
  28. {
  29. fault_flag = 0;
  30. }
  31. soap_destroy(soap_udp);
  32. soap_end(soap_udp);
  33. soap_done(soap_udp);
  34. free(soap_udp);
  35. }
  36. }
int main()

{

	int server_udp;

	int retval=0;

	struct soap *soap_udp;

	int fault_flag = 0;

	server_udp = create_server_socket_udp();

	bind_server_udp1(server_udp);

	while(1){

		soap_udp=soap_new();

		soap_init1(soap_udp, SOAP_IO_UDP);

		soap_udp->master = server_udp;

		soap_udp->socket = server_udp;

		soap_udp->errmode = 0;

		soap_udp->bind_flags = 1;

		if (!soap_valid_socket(soap_bind(soap_udp, NULL, 3702, 100)))

		{

			soap_print_fault(soap_udp, stderr);

		}

		fprintf(stderr,"soap_serve starting..\n");

		retval = soap_serve(soap_udp); //阻塞在这里

		fprintf(stderr,"retval=%d\n",retval);

		if(retval && !(fault_flag))

		{

			fault_flag = 1;

		}

		else if(!retval)

		{

			fault_flag = 0;

		}

		soap_destroy(soap_udp);

		soap_end(soap_udp);

		soap_done(soap_udp);

		free(soap_udp);

	}

}

soap_server函数会一直阻塞，直到接收到SOAP消息，并且该处理是一次性的，所以要将将soap_server放到while里或者独立的线程中。
最后编译运行

make server

./discovery.tmp

单击OnvifTestTool的Discover Devices，运行discovery.tmp的中会打印调试信息，如图


然后，在OnvifTestTool中会搜索到我的设备

响应Discover Devices的SOAP消息如下：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2. <SOAP-ENV:Envelope
  3. xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope"
  4. xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding"
  5. xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  6. xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  7. xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing"
  8. xmlns:wsdd="http://schemas.xmlsoap.org/ws/2005/04/discovery"
  9. xmlns:ns1="http://www.onvif.org/ver10/network/wsdl/RemoteDiscoveryBinding"
  10. xmlns:ns2="http://www.onvif.org/ver10/network/wsdl/DiscoveryLookupBinding"
  11. xmlns:ns3="http://www.onvif.org/ver10/network/wsdl/DiscoveryLookupBinding"
  12. xmlns:tdn="http://www.onvif.org/ver10/network/wsdl">
  13. <SOAP-ENV:Header>
  14. <wsa:MessageID>uuid:2419d68a-2dd2-21b2-a205-010101010101</wsa:MessageID>
  15. <wsa:RelatesTo>uuid:88a3958a-6155-4510-8279-69aeafd31681</wsa:RelatesTo>
  16. <wsa:To SOAP-ENV:mustUnderstand="true">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To>
  17. <wsa:Action SOAP-ENV:mustUnderstand="true">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action>
  18. </SOAP-ENV:Header>
  19. <SOAP-ENV:Body>
  20. <wsdd:ProbeMatches>
  21. <wsdd:ProbeMatch xmlns:_0="http://www.onvif.org/ver10/device/wsdl">
  22. <wsa:EndpointReference>
  23. <wsa:Address>urn:uuid:2419d68a-2dd2-21b2-a205-010101010101</wsa:Address>
  24. <wsa:ReferenceProperties></wsa:ReferenceProperties>
  25. <wsa:ReferenceParameters></wsa:ReferenceParameters>
  26. <wsa:PortType>ttl</wsa:PortType>
  27. </wsa:EndpointReference>
  28. <wsdd:Types>_0:Device</wsdd:Types>
  29. <wsdd:Scopes>onvif://www.onvif.org/type/NetworkVideoTransmitter</wsdd:Scopes>
  30. <wsdd:XAddrs>http://192.168.1.233/onvif/device_service</wsdd:XAddrs>
  31. <wsdd:MetadataVersion>1</wsdd:MetadataVersion>
  32. </wsdd:ProbeMatch>
  33. </wsdd:ProbeMatches>
  34. </SOAP-ENV:Body>
  35. </SOAP-ENV:Envelope>
<?xml version="1.0" encoding="UTF-8"?>

<SOAP-ENV:Envelope

	xmlns:SOAP-ENV="http://www.w3.org/2003/05/soap-envelope"

	xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xmlns:xsd="http://www.w3.org/2001/XMLSchema"

	xmlns:wsa="http://schemas.xmlsoap.org/ws/2004/08/addressing"

	xmlns:wsdd="http://schemas.xmlsoap.org/ws/2005/04/discovery"

	xmlns:ns1="http://www.onvif.org/ver10/network/wsdl/RemoteDiscoveryBinding"

	xmlns:ns2="http://www.onvif.org/ver10/network/wsdl/DiscoveryLookupBinding"

	xmlns:ns3="http://www.onvif.org/ver10/network/wsdl/DiscoveryLookupBinding"

	xmlns:tdn="http://www.onvif.org/ver10/network/wsdl">

	<SOAP-ENV:Header>

		<wsa:MessageID>uuid:2419d68a-2dd2-21b2-a205-010101010101</wsa:MessageID>

		<wsa:RelatesTo>uuid:88a3958a-6155-4510-8279-69aeafd31681</wsa:RelatesTo>

		<wsa:To SOAP-ENV:mustUnderstand="true">urn:schemas-xmlsoap-org:ws:2005:04:discovery</wsa:To>

		<wsa:Action SOAP-ENV:mustUnderstand="true">http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe</wsa:Action>

	</SOAP-ENV:Header>

	<SOAP-ENV:Body>

		<wsdd:ProbeMatches>

			<wsdd:ProbeMatch xmlns:_0="http://www.onvif.org/ver10/device/wsdl">

				<wsa:EndpointReference>

				<wsa:Address>urn:uuid:2419d68a-2dd2-21b2-a205-010101010101</wsa:Address>

				<wsa:ReferenceProperties></wsa:ReferenceProperties>

				<wsa:ReferenceParameters></wsa:ReferenceParameters>

				<wsa:PortType>ttl</wsa:PortType>

				</wsa:EndpointReference>

				<wsdd:Types>_0:Device</wsdd:Types>

				<wsdd:Scopes>onvif://www.onvif.org/type/NetworkVideoTransmitter</wsdd:Scopes>

				<wsdd:XAddrs>http://192.168.1.233/onvif/device_service</wsdd:XAddrs>

				<wsdd:MetadataVersion>1</wsdd:MetadataVersion>

			</wsdd:ProbeMatch>

		</wsdd:ProbeMatches>

	</SOAP-ENV:Body>

</SOAP-ENV:Envelope>

资料下载

上述完整的代码包在这里，有需要的就去下载吧：http://download.csdn.net/detail/ghostyu/4766025

另外我参考的部分文档可以再这里下载

ONVIF-Core-Spec-v210.pdf：http://download.csdn.net/detail/ghostyu/4766067

gSOAP手册：http://download.csdn.net/detail/ghostyu/4766075

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