habe mittels folgender Befehle die Umgebung für einen SOAP-Client geschaffen:
wsdl2h -o sportsdata.h http://www.openligadb.de/Webservices/Sportsdata.asmx?WSDL
soapcpp2 -I/usr/share/gsoap/import -i sportsdata.h

Nun bekomme ich bei folgendem Code aber nur diese Ausgabe:
mdata.size(): 0
mdata[ 0 ]->nameTeam1: No Data Available!

Hier der Code:

#include "SportsdataSoap12.nsmap"
#include "soapSportsdataSoap12Proxy.h"
#include <memory>
#include <string>
#include <vector>

int main()
{
  _ns1__GetMatchdataByGroupLeagueSaison req;
  _ns1__GetMatchdataByGroupLeagueSaisonResponse resp;

  req.groupOrderID = 1;
  req.leagueShortcut = new std::string( "bl1" );
  req.leagueSaison = new std::string( "2011" );

  SportsdataSoap12Proxy sportsdata;
  sportsdata.GetMatchdataByGroupLeagueSaison( &req, &resp );

  std::vector<ns1__Matchdata*> mdata = resp.GetMatchdataByGroupLeagueSaisonResult->Matchdata;
  std::cout << "mdata.size(): " << mdata.size() << std::endl;
  std::cout << "mdata[ 0 ]->nameTeam1: " << mdata[ 0 ]->nameTeam1->c_str() << std::endl;
  return 0;
}

Hier noch die Definitionen für
* _ns1__GetMatchdataByGroupLeagueSaison

/// "http://msiggi.de/Sportsdata/Webservices":GetMatchdataByGroupLeagueSaison is a complexType.
class _ns1__GetMatchdataByGroupLeagueSaison
{ public:
/// Element groupOrderID of type xs:int.
    int                                  groupOrderID                   1;	///< Required element.
/// Element leagueShortcut of type xs:string.
    std::string*                         leagueShortcut                 0;	///< Optional element.
/// Element leagueSaison of type xs:string.
    std::string*                         leagueSaison                   0;	///< Optional element.
/// A handle to the soap struct that manages this instance (automatically set)
    struct soap                         *soap                          ;
};

* _ns1__GetMatchdataByGroupLeagueSaisonResponse

/// "http://msiggi.de/Sportsdata/Webservices":GetMatchdataByGroupLeagueSaisonResponse is a complexType.
class _ns1__GetMatchdataByGroupLeagueSaisonResponse
{ public:
/// Element GetMatchdataByGroupLeagueSaisonResult of type "http://msiggi.de/Sportsdata/Webservices":ArrayOfMatchdata.
    ns1__ArrayOfMatchdata*               GetMatchdataByGroupLeagueSaisonResult 0;	///< Optional element.
/// A handle to the soap struct that manages this instance (automatically set)
    struct soap                         *soap                          ;
};

* SportsdataSoap12Proxy::GetMatchdataByGroupLeagueSaison

int SportsdataSoap12Proxy::GetMatchdataByGroupLeagueSaison(_ns1__GetMatchdataByGroupLeagueSaison *ns1__GetMatchdataByGroupLeagueSaison, _ns1__GetMatchdataByGroupLeagueSaisonResponse *ns1__GetMatchdataByGroupLeagueSaisonResponse);

* ns1__Matchdata

/// "http://msiggi.de/Sportsdata/Webservices":Matchdata is a complexType.
class ns1__Matchdata
{ public:
/// Element matchID of type xs:int.
    int                                  matchID                        1;	///< Required element.
/// Element matchDateTime of type xs:dateTime.
    time_t                               matchDateTime                  1;	///< Required element.
/// Element TimeZoneID of type xs:string.
    std::string*                         TimeZoneID                     0;	///< Optional element.
/// Element matchDateTimeUTC of type xs:dateTime.
    time_t                               matchDateTimeUTC               1;	///< Required element.
/// Element groupID of type xs:int.
    int                                  groupID                        1;	///< Required element.
/// Element groupOrderID of type xs:int.
    int                                  groupOrderID                   1;	///< Required element.
/// Element groupName of type xs:string.
    std::string*                         groupName                      0;	///< Optional element.
/// Element leagueID of type xs:int.
    int                                  leagueID                       1;	///< Required element.
/// Element leagueName of type xs:string.
    std::string*                         leagueName                     0;	///< Optional element.
/// Element leagueSaison of type xs:string.
    std::string*                         leagueSaison                   0;	///< Optional element.
/// Element leagueShortcut of type xs:string.
    std::string*                         leagueShortcut                 0;	///< Optional element.
/// Element nameTeam1 of type xs:string.
    std::string*                         nameTeam1                      0;	///< Optional element.
/// Element nameTeam2 of type xs:string.
    std::string*                         nameTeam2                      0;	///< Optional element.
/// Element idTeam1 of type xs:int.
    int                                  idTeam1                        1;	///< Required element.
/// Element idTeam2 of type xs:int.
    int                                  idTeam2                        1;	///< Required element.
/// Element iconUrlTeam1 of type xs:string.
    std::string*                         iconUrlTeam1                   0;	///< Optional element.
/// Element iconUrlTeam2 of type xs:string.
    std::string*                         iconUrlTeam2                   0;	///< Optional element.
/// Element pointsTeam1 of type xs:int.
    int                                  pointsTeam1                    1;	///< Required element.
/// Element pointsTeam2 of type xs:int.
    int                                  pointsTeam2                    1;	///< Required element.
/// Element lastUpdate of type xs:dateTime.
    time_t                               lastUpdate                     1;	///< Required element.
/// Element matchIsFinished of type xs:boolean.
    bool                                 matchIsFinished                1;	///< Required element.
/// Element matchResults of type "http://msiggi.de/Sportsdata/Webservices":ArrayOfMatchResult.
    ns1__ArrayOfMatchResult*             matchResults                   0;	///< Optional element.
/// Element goals of type "http://msiggi.de/Sportsdata/Webservices":ArrayOfGoal.
    ns1__ArrayOfGoal*                    goals                          0;	///< Optional element.
/// Element location of type "http://msiggi.de/Sportsdata/Webservices":Location.
    ns1__Location*                       location                       1;	///< Required element.
/// Element NumberOfViewers of type xs:int.
    int*                                 NumberOfViewers                1;	///< Nullable pointer.
/// A handle to the soap struct that manages this instance (automatically set)
    struct soap                         *soap                          ;
};

Als Testergebnisse möchte ich von der 1. Bundesliga/Saison 2011 1. Spieltag die Begegnungen, bekomme aber keine Daten. Im Web-Livetest kann man aber sehen, dass Daten existieren: http://www.openligadb.de/Matches/WebserviceLivetest

Grüße
Danny.