Connecting to Azure storage account thru proxy server - azure

Question

My 'LocalClient' app is in a corporate LAN behind an HTTP proxy server (ISA). The first Azure API call i make - CloudQueue.CreateIfNotExist() - causes an exception: (407) Proxy Authentication Required. I tried following things:
Added the <System.Net> defaultProxy element to app.config, but it doesn't seem to be working (Reference: http://geekswithblogs.net/mnf/archive/2006/03/08/71663.aspx).
I configured 'Microsoft Firewall Client for ISA Server', but that did not help either.
Used a custom proxy handler as suggested here: http://dunnry.com/blog/2010/01/25/SupportingBasicAuthProxies.aspx. I am not able to get this working - getting a Configuration initialization exception.
As per MSDN, an HTTP proxy server can be specified in the connection string only in case of Development Storage (see http://msdn.microsoft.com/en-us/library/ee758697.aspx):
UseDevelopmentStorage=true;DevelopmentStorageProxyUri=http://myProxyUri
Is there any way to connect to the Azure Storage thru a proxy server?

Answer 1

I actually found that the custom proxy solution was not required.
Adding the following to app.config (just before the </configuration>) did the trick for me:
<system.net>
<defaultProxy enabled="true" useDefaultCredentials="true">
<proxy usesystemdefault="true" />
</defaultProxy>
</system.net>

Answer 2

The custom proxy solution (the third thing i tried as mentioned in my original question) worked perfectly. The mistake i was doing earlier was not putting the <configSections> element at the beginning of <configuration> in app.config as required. On doing that, the custom proxy solution given here solved my problem.

Answer 3

To by pass the proxy then please use like below, it works as expected and same has been tested.
public class AzureUpload {
// Define the connection-string with your values
/*public static final String storageConnectionString =
"DefaultEndpointsProtocol=http;" +
"AccountName=your_storage_account;" +
"AccountKey=your_storage_account_key";*/
public static final String storageConnectionString =
"DefaultEndpointsProtocol=http;" +
"AccountName=test2rdrhgf62;" +
"AccountKey=1gy3lpE7Du1j5ljKiupjhgjghjcbfgTGhbntjnRfr9Yi6GUQqVMQqGxd7/YThisv/OVVLfIOv9kQ==";
// Define the path to a local file.
static final String filePath = "D:\\Project\\Supporting Files\\Jar's\\Azure\\azure-storage-1.2.0.jar";
static final String file_Path = "D:\\Project\\Healthcare\\Azcopy_To_Azure\\data";
public static void main(String[] args) {
try
{
// Retrieve storage account from connection-string.
//String storageConnectionString = RoleEnvironment.getConfigurationSettings().get("StorageConnectionString");
//Proxy httpProxy = new Proxy(Proxy.Type.HTTP,new InetSocketAddress("132.186.192.234",8080));
System.setProperty("http.proxyHost", "102.122.15.234");
System.setProperty("http.proxyPort", "80");
System.setProperty("https.proxyUser", "ad001\\empid001");
System.setProperty("https.proxyPassword", "pass!1");
// Retrieve storage account from connection-string.
CloudStorageAccount storageAccount = CloudStorageAccount.parse(storageConnectionString);
// Create the blob client.
CloudBlobClient blobClient = storageAccount.createCloudBlobClient();
// Get a reference to a container.
// The container name must be lower case
CloudBlobContainer container = blobClient.getContainerReference("rpmsdatafromhospital");
// Create the container if it does not exist.
container.createIfNotExists();
// Create a permissions object.
BlobContainerPermissions containerPermissions = new BlobContainerPermissions();
// Include public access in the permissions object.
containerPermissions.setPublicAccess(BlobContainerPublicAccessType.CONTAINER);
// Set the permissions on the container.
container.uploadPermissions(containerPermissions);
// Create or overwrite the new file to blob with contents from a local file.
/*CloudBlockBlob blob = container.getBlockBlobReference("azure-storage-1.2.0.jar");
File source = new File(filePath);
blob.upload(new FileInputStream(source), source.length());*/
String envFilePath = System.getenv("AZURE_FILE_PATH");
//upload list of files/directory to blob storage
File folder = new File(envFilePath);
File[] listOfFiles = folder.listFiles();
for (int i = 0; i < listOfFiles.length; i++) {
if (listOfFiles[i].isFile()) {
System.out.println("File " + listOfFiles[i].getName());
CloudBlockBlob blob = container.getBlockBlobReference(listOfFiles[i].getName());
File source = new File(envFilePath+"\\"+listOfFiles[i].getName());
blob.upload(new FileInputStream(source), source.length());
System.out.println("File " + listOfFiles[i].getName()+ " upload successful");
}
//directory upload
/*else if (listOfFiles[i].isDirectory()) {
System.out.println("Directory " + listOfFiles[i].getName());
CloudBlockBlob blob = container.getBlockBlobReference(listOfFiles[i].getName());
File source = new File(file_Path+"\\"+listOfFiles[i].getName());
blob.upload(new FileInputStream(source), source.length());
}*/
}
}catch (Exception e)
{
// Output the stack trace.
e.printStackTrace();
}
}
}
.Net or C# then please add below code to "App.config"
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
</startup>
<system.net>
<defaultProxy enabled="true" useDefaultCredentials="true">
<proxy usesystemdefault="true" />
</defaultProxy>
</system.net>
</configuration>