PRL_HANDLE PrlSrv_ProxyLoginEx(
    PRL_HANDLE hServer, 
    PRL_CONST_STR user, 
    PRL_CONST_STR passwd, 
    PRL_CONST_STR sPrevSessionUuid, 
    PRL_UINT32 timeout, 
    PRL_SECURITY_LEVEL security_level, 
    const PRL_PROXY_HOST_INFO_PTR hostInfo, 
    PRL_UINT32 flags
);