ONVIF客戶端開發

2021-07-23 05:30:19 字數 3531 閱讀 3472

在使用 gsoap 框架生成**之後, 得到檔案:

soapc.c 


soapclient.c


stdsoap2.c stdsoap2.h


duration.c


wsdd.h
我們利用現有的soapclient, 呼叫api構建onvif請求(包括xml, http client). 開發前需要了解一下onvif官網文件指導: onvif 2.0 service operation index;該文件列舉了onvif的各個模組下的各種方法. 再回到gsoap框架, 同樣, 它的文件說明也比較詳細.

//建立各種soap


#define soap_new() soap_new1(soap_io_default)


#define soap_new1(mode) soap_new2(mode, mode)


#define soap_new2(imode, omode) soap_versioning(soap_new)(imode, omode)


//初始化各種soap


#define soap_init(soap) soap_init1(soap, soap_io_default)


#define soap_init1(soap, mode) soap_init2(soap, mode, mode)


#define soap_init2(soap, imode, omode) soap_versioning(soap_init)(soap, imode, omode)
//該函式soap_done函式呼叫的時候釋放, 無需呼叫free函式


soap_malloc(struct soap *soap, size_t n)
//釋放臨時cache


soap_end(struct soap *soap)


//釋放所以記憶體模組和關閉socket


soap_done(struct soap *soap)


//銷毀soap物件


#define soap_destroy(soap) soap_delete((soap), null)
另外,除錯程式介面資訊可以開啟log level, 如cmake下

set(cmake_c_flags "$ -o0 -ggdb -ddebug")
使用巨集debug開啟並輸出除錯資訊到 recv.log, send.log, test.log .

裝置搜尋步驟:

(1) 初始化客戶端

初始化客戶端, 包括uuid位址, 超時設定,頭部資訊等.

struct saop* onvif_init_soap(struct soap_env__header *header,


const


char *wsa_to,


const


char *wsa_action,


int timeout,


userinfo_s *puser); //設定mac值


char _hwid[1024];


unsigned


int flagrand;


soap = soap_new();


if (soap == null) 


//設定命名空間


soap_set_namespaces(soap, namespaces);


if (timeout > 0)else


soap_default_soap_env__header(soap, header);


srand((int)time(0));


flagrand = rand() % 9000 + 1000; //取4位數


sprintf(_hwid, "urn:uuid:%ud68a-1dd2-11b2-a1025-%02x%02x%02x%02x%02x%02x",


flagrand, macaddr[0], macaddr[1], macaddr[2], macaddr[3], macaddr[4], macaddr[5]);


header->wsa__messageid = (char *)soap_malloc(soap, 100);


memset(header->wsa__messageid, 0, 100);


strncpy(header->wsa__messageid, _hwid, strlen(_hwid));


if (puser != null)


if (wsa_action != null)


if (wsa_to != null)


soap->header = header;


return soap;


}
(2) 設定probe搜尋引數

wsdd__probetype req;


struct __wsdd__probematches resp;


wsdd__scopestype sscope;


struct soap_env__header header;


struct soap *soap = null;


const


char *wsa_to = "urn:schemas-xmlsoap-org:ws:2005:04:discovery";


const


char *wsa_action = "";


const


char *soap_endpoint = "soap.udp:";


soap = onvif_init_soap(&header, wsa_to, wsa_action, 5, null);


soap_default_soap_env__header(soap, &header);


soap->header = &header;


soap_default_wsdd__scopestype(soap, &sscope);


sscope.__item = "";


soap_default_wsdd__probetype(soap, &req);


req.scopes = &sscope;


req.types = "";
(3) 傳送probe action

retval =soap_send___wsdd__probe(soap, soap_endpoint, null, &req);
(4) 接收probematches

while(retval == soap_ok)else


sleep(1);


}}//else


}else


if (soap->error)else


break;


}//else if


}//while
(5) 釋放資源

soap_destroy(soap);


soap_end(soap);


soap_free(soap);

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