gSOAP EWS Connection / Use

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C++

SQL

I'm trying to write an application that would work with the EWS proxy classes. To generate proxy classes I used gsoap (compiled OpenSSL). I have implemented a library that works with EWS, but. Net. The problem is this: I have no idea how to implement a connection to the server. Doing the following:
functions?

ExchangeServiceBindingProxy *proxy = new ExchangeServiceBindingProxy("https://192.168.0.49/EWS/exchange.asmx");
soap *pSoap = proxy->soap;
pSoap->userid = "user1";
pSoap->passwd = "password1";
pSoap->recv_timeout = 300;
pSoap->send_timeout = 300;

SOAP_ENV__Header *header = new SOAP_ENV__Header();
header->ns3__RequestServerVersion = new _ns3__RequestServerVersion();
header->ns3__RequestServerVersion->soap = pSoap;
header->ns3__RequestServerVersion->Version = ns3__ExchangeVersionType__Exchange2010;
pSoap->header = header;

//get root folder ID
ns3__DistinguishedFolderIdType *dfit = new ns3__DistinguishedFolderIdType();
dfit->Id = ns3__DistinguishedFolderIdNameType__inbox;

//set the props that we want to retrieve
ns3__FolderResponseShapeType *frst = new ns3__FolderResponseShapeType();
frst->BaseShape = ns3__DefaultShapeNamesType__AllProperties;

//get folder
ns1__GetFolderType *gftRoot = new ns1__GetFolderType();
gftRoot->FolderIds = new ns3__NonEmptyArrayOfBaseFolderIdsType();
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType = new __ns3__union_NonEmptyArrayOfBaseFolderIdsType();
gftRoot->FolderIds->__union_NonEmptyArrayOfBaseFolderIdsType->union_NonEmptyArrayOfBaseFolderIdsType.DistinguishedFolderId = dfit;
gftRoot->FolderShape = frst;
__ns1__GetFolderResponse response;


int error = proxy->GetFolder(gftRoot, response);

As a result, getting the error: SLL_ERROR.

I know, that i`m doing something wrong. But what? What i should to do, to use proxy classes