# procedure to set proxy if needed
    s = QSettings() #getting proxy from qgis options settings
    proxyEnabled = s.value("proxy/proxyEnabled", "")
    proxyType = s.value("proxy/proxyType", "" )
    proxyHost = s.value("proxy/proxyHost", "" )
    proxyPort = s.value("proxy/proxyPort", "" )
    proxyUser = s.value("proxy/proxyUser", "" )
    proxyPassword = s.value("proxy/proxyPassword", "" )
    if proxyEnabled == "true": # test if there are proxy settings
       proxy = QNetworkProxy()
       if proxyType == "DefaultProxy":
           proxy.setType(QNetworkProxy.DefaultProxy)
       elif proxyType == "Socks5Proxy":
           proxy.setType(QNetworkProxy.Socks5Proxy)
       elif proxyType == "HttpProxy":
           proxy.setType(QNetworkProxy.HttpProxy)
       elif proxyType == "HttpCachingProxy":
           proxy.setType(QNetworkProxy.HttpCachingProxy)
       elif proxyType == "FtpCachingProxy":
           proxy.setType(QNetworkProxy.FtpCachingProxy)
       proxy.setHostName(proxyHost)
       proxy.setPort(int(proxyPort))
       proxy.setUser(proxyUser)
       proxy.setPassword(proxyPassword)
       QNetworkProxy.setApplicationProxy(proxy)