EcDoConnectEx throw an exception

Question

I have create an RPC binding with the "ncacn_ip_tcp" and set the authentication with "RPC_C_AUTHN_WINNT",filled all the parameters in the EcDoConnectEx function,then call the EcDoConnectEx function,then system throw a exception dialog, promt :"Unhandled exception at 0x7c812afb in rcp3.exe: 0x000006B5: interface unknown". below is the code:

{//begin
 RPC_STATUS status;
 unsigned short *StringBinding;
 RPC_BINDING_HANDLE BindingHandle;

 TCHAR* protocolSequence = L"ncacn_ip_tcp";
 TCHAR* serverDNS = L"some.corp.com";
 TCHAR* enePoint = L"135";

 TCHAR* objUuid = L"A4F1DB00-CA47-1067-B31F-00DD010662DA";

 status = RpcStringBindingCompose((RPC_WSTR)objUuid,  // Object UUID
  (RPC_WSTR)protocolSequence,           // Protocol sequence to use
  (RPC_WSTR)serverDNS, // Server DNS or Netbios Name
  (RPC_WSTR)enePoint,
  NULL,
  &StringBinding);
 // Error checking ommitted. If no error, we proceed below
 status = RpcBindingFromStringBinding(StringBinding, &BindingHandle);

 TCHAR* wPrnName = NULL;
 RpcMgmtInqServerPrincName( BindingHandle, RPC_C_AUTHN_WINNT, (RPC_WSTR*) &wPrnName);

 SEC_WINNT_AUTH_IDENTITY sec;
 sec.Domain = (unsigned short*)L"corp.com";            
 sec.DomainLength = 11;
 sec.Flags = SEC_WINNT_AUTH_IDENTITY_UNICODE;
 sec.Password = (unsigned short *)L"myPwd";
 sec.PasswordLength = 8;
 sec.User = (unsigned short *)L"myuserName";
 sec.UserLength = 10;

 if(RpcBindingSetAuthInfo(BindingHandle,(RPC_WSTR)wPrnName,RPC_C_AUTHN_LEVEL_PKT_PRIVACY,RPC_C_AUTHN_WINNT,(RPC_AUTH_IDENTITY_HANDLE)&sec,RPC_C_AUTHN_NONE) != RPC_S_OK)
  cout<<"Set Auth Error!"<<endl;

 CXH pcxh = NULL;
 unsigned char* szUserDN = (unsigned char*)"/o=MS/ou=MS First/CN=Recipients/CN=someone";
 unsigned long ulFlags = 0x00000000;
 unsigned long ulConMod = emsmdb_hash((char*)szUserDN);
 unsigned long cbLimit = 0x00000000;
 unsigned long ulCpid = 0x000004E4; 
 unsigned long ulLcidString = 0x00000409; 
 unsigned long ulLcidSort = 0x00000409;  
 unsigned long ulIcxrLink = 0xFFFFFFFF;
 unsigned short usFCanConvertCodePages = 0x01;

 unsigned long cmsPollsMax;
 unsigned long cRetry;
 unsigned long cmsRetryDalay;
 unsigned short icxr;
 unsigned char szDNPrefix[512];
 unsigned char szDisplayName[512];

 memset(szDisplayName,0,512);
 memset(szDNPrefix,0,512);

 unsigned short rgwClientVersion[3];
 rgwClientVersion[0] = 0x000c;
 rgwClientVersion[1] = 0x183e;
 rgwClientVersion[2] = 0x03e8;

 unsigned short rgwServerVersion[3];
 unsigned short rgwBestVersion[3];

 unsigned long ulTimeStamp = 0;

 unsigned char* rgbAuxIn = NULL;  
 unsigned long cbAuxIn = 0x00000000; 

 unsigned char rgbAuxOut[0x1008];
 SMALL_RANGE_ULONG pcbAuxOut = 0x00001008; 

 long retValue;
etValue = EcDoConnectEx(BindingHandle,
                                       &pcxh,szUserDN,
                                       ulFlags,ulConMod,
                                       cbLimit,ulCpid,
                                       ulLcidString,
                                       ulLcidSort,ulIcxrLink,
                                       usFCanConvertCodePages,
                                       &cmsPollsMax,&cRetry,
                                       &cmsRetryDalay,
                                       &icxr,(unsigned char**)&szDNPrefix,
                                       (unsigned char**)&szDisplayName,
                                       rgwClientVersion,rgwServerVersion,
                                       rgwBestVersion,&ulTimeStamp,
                                       rgbAuxIn,cbAuxIn,rgbAuxOut,&pcbAuxOut)

 RpcBindingFree(&BindingHandle);
 RpcStringFree(&StringBinding);
 return 0;
}//end of the code


Almost  all the parameter value is copy from the example of the exchange protocol document [MS-OXCRPC]4.1,all the server name and the username is sure to be right,and I compile the idl(in the [MS-OXCRPC]section 6)with the Visual Studio 2005,the code above is also in the enviroment with VS2005.

Could anyone tell me why I can't receive a response from the server,rather than an annoying exception?thank you!

Answer 1

Hi Jacob,

I will review your code and see if there is something missing or if there is an issue with the documentation.

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Developer Consultant

Answer 2

thank you,Tom,I am looking forward to your answer.

Answer 3

I got a sample working last night and as s per your other question I will it add it to the working sample.

---

Developer Consultant

Answer 4

Hi Tom,
Could you please share the sample code or tell where to download the sample code, thank you in advance.

Answer 5

I have posted my sample to your other thread that should help.

---

Developer Consultant

Answer 6

Thank you for your help!