linux下gsoap编译onvif，实现discovery探测设备
1.首先下载gsoap工具。我目前使用的gsoap 2.8
2.解压到某个目录，编译安装
./configure
make
make install3.新建一个工程目录，cd进去，用wsdl2h生成onvif.h文件
wsdl2h -o onvif.h -s -t ./typemap.dat http://www.onvif.org/onvif/ver10/device/wsdl/devicemgmt.wsdl http://www.onvif.org/onvif/ver10/media/wsdl/media.wsdl http://www.onvif.org/onvif/ver10/event/wsdl/event.wsdl http://www.onvif.org/onvif/ver10/display.wsdl http://www.onvif.org/onvif/ver10/deviceio.wsdl http://www.onvif.org/onvif/ver20/imaging/wsdl/imaging.wsdl http://www.onvif.org/onvif/ver20/ptz/wsdl/ptz.wsdl http://www.onvif.org/onvif/ver10/receiver.wsdl http://www.onvif.org/onvif/ver10/recording.wsdl http://www.onvif.org/onvif/ver10/search.wsdl http://www.onvif.org/onvif/ver10/network/wsdl/remotediscovery.wsdl http://www.onvif.org/onvif/ver10/replay.wsdl http://www.onvif.org/onvif/ver20/analytics/wsdl/analytics.wsdl http://www.onvif.org/onvif/ver10/analyticsdevice.wsdl http://www.onvif.org/ver10/actionengine.wsdl http://www.onvif.org/ver10/pacs/accesscontrol.wsdl http://www.onvif.org/ver10/pacs/doorcontrol.wsdl其中，-c为产生纯c代码，不然为c++代码；-s为不使用STL库；因为习惯用C++了，所有就不加-c了。
注意：http的url之间是空格。
4.在onvif.h中，添加
#import "wsse.h" 将277行int SOAP_ENV__Fault修改为int SOAP_ENV__Fault_alex
5.在自定义的工程目录中，根据onvif.h产生onvif代码
soapcpp2 -cpp onvif.h -x -I../gsoap-2.8 -I../gsoap-2.8/gsoap -I../gsoap-2.8/gsoap/import/6.从gsoap源码目录，拷贝一些需要的文件到工程目录，可参考的文件有，可供参考（只需看*.cpp,*.c,*.h文件）
7.测试一个简单的discovery例子程序，main.cpp（网上找的）
#include
#include "RemoteDiscoveryBinding.nsmap"
#include "soapH.h"
using namespace std;
int main()
{
printf("onvif\n");
struct soap *soap;
struct wsdd__ProbeType req;
struct __wsdd__ProbeMatches resp;
struct wsdd__ScopesType sScope;
struct SOAP_ENV__Header header;
int count = 0;
int result = 0;
char guid_string[100];
soap = soap_new();
if(soap==NULL)
{
return -1;
}
soap_set_namespaces(soap, namespaces);
soap->recv_timeout = 5; //超过5秒钟没有数据就退出
soap_default_SOAP_ENV__Header(soap, &header);
header.wsa__MessageID = guid_string;
header.wsa__To= "urn:schemas-xmlsoap-org:ws:2005:04:discovery";
header.wsa__Action= "http://schemas.xmlsoap.org/ws/2005/04/discovery/Probe";
soap->header = &header;
soap_default_wsdd__ScopesType(soap, &sScope);
sScope.__item = "";
soap_default_wsdd__ProbeType(soap, &req);
req.Scopes = &sScope;
req.Types = "";
result = soap_send___wsdd__Probe(soap, "soap.udp://239.255.255.250:3702", NULL, &req);
do{
result = soap_recv___wsdd__ProbeMatches(soap, &resp);
if (soap->error)
{
cout<<"soap error:"<error<error;
break;
}
else
{
cout<<"========================================="<__sizeProbeMatch<ProbeMatch->MetadataVersion<ProbeMatch->Scopes->__item<ProbeMatch->Scopes->MatchBy<ProbeMatch->Types<ProbeMatch->wsa__EndpointReference.Address<ProbeMatch->wsa__EndpointReference.PortType<ProbeMatch->wsa__EndpointReference.ServiceName<ProbeMatch->wsa__EndpointReference.__size<ProbeMatch->wsa__EndpointReference.__anyAttribute<ProbeMatch->wsa__EndpointReference.__any<ProbeMatch->XAddrs< 8.编译链接
g++ -ggdb -I./ -c -o main.o main.cpp -I./
g++ -ggdb -I./ -c -o duration.o duration.c
g++ -ggdb -I./ -c -o soapC.o soapC.cpp
g++ -ggdb -I./ -c -o soapClient.o soapClient.cpp
g++ -ggdb -I./ -c -o stdsoap2.o stdsoap2.cpp
g++ -ggdb -I./ ./*.o -o main时间关系，就不写makefile了，谁写了makefile可以留言分享一下，感激！
9.执行./main发现断错误了，于是gdb调试了以下，原来是一个数组没有初始化，可能是新版本的问题，也可能是我不懂用把，直接注释掉整个if就OK了
gdb main
r
15671 soap->labbuf[soap->labidx > 0 ? soap->labidx - 1 : 0] = '\0';
(gdb) bt
#0 0x086d2e97 in soap_QName2s (soap=0x88bf008, s=0x86de812 "")
at stdsoap2.cpp:15671
#1 0x085417ad in soap_out_wsdd__ProbeType (soap=0x88bf008,
tag=0x86f4c4d "wsdd:Probe", id=0, a=0xbffff5b8, type=0x86e9f85 "")
at soapC.cpp:354751
#2 0x08653ecc in soap_out_PointerTowsdd__ProbeType (soap=0x88bf008,
tag=0x86f4c4d "wsdd:Probe", id=0, a=0xbffff54c, type=0x86e9f85 "")
at soapC.cpp:429797
#3 0x0853d805 in soap_out___wsdd__Probe (soap=0x88bf008,
tag=0x86dea18 "-wsdd:Probe", id=-2, a=0xbffff54c, type=0x86de940 "")
at soapC.cpp:353485
#4 0x0853da6a in soap_put___wsdd__Probe (soap=0x88bf008, a=0xbffff54c,
tag=0x86dea18 "-wsdd:Probe", type=0x86de940 "") at soapC.cpp:353541
#5 0x0804b1f3 in soap_send___wsdd__Probe (soap=0x88bf008,
soap_endpoint=0x86de814 "soap.udp://239.255.255.250:3702",
soap_action=0x86de9dc "http://docs.oasis-open.org/ws-dd/ns/discovery/2009/01/Probe", wsdd__Probe=0xbffff5b8) at soapClient.cpp:208
#6 0x0804a268 in main () at main.cpp:41
(gdb) 找到stdsoap2.cpp的第15671行，把原来的if(...)改成if(0);
10. 执行
./main