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# Accessing On-Premise Application using Cloud Connector
Follow the steps here to extend the connectivity of Cloud Integration with remote on-premise application.
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## Prerequisites
You must have the access to Public APIs. For more information, see [SDK API](sdk-api-c5c7933.md).
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## Context
You can prepare an Adapter Development Kit \(ADK\) project to access any on-premise application using Cloud Connector.
## Procedure
1. Depending on your requirements, add the code below to either the `*Producer.java` \(receiver adapter\) or `*Consumer.java` \(sender adapter\) file. This is for connecting to on-premise application.
1. For HTTP
> ### Source Code:
> Use the below code to fetch the proxy details and additional headers.
>
> ```java
> CloudConnectorContext context = new CloudConnectorContext();
> context.setConnectionType(ConnectionType.HTTP);
> CloudConnectorProperties props = ITApiFactory.getService(CloudConnectorProperties.class, context);
> String proxyHost = props.getProxyHost();
> String proxyPort = props.getProxyPort();
> Map<String, String> additionalHeaders = props.getAdditionalHeaders();
> ```
Add the following import declarations:
> ### Source Code:
> ```java
> import com.sap.it.api.ITApiFactory;
> import com.sap.it.api.ccs.adapter.CloudConnectorContext;
> import com.sap.it.api.ccs.adapter.CloudConnectorProperties;
> import com.sap.it.api.ccs.adapter.ConnectionType;
>
> ```
> ### Sample Code:
> The example here shows how you can use the above proxy details in HTTP client. Ensure to provide the location ID of the Cloud Connector using the header `SAP-Connectivity-SCC-Location_ID`.
>
> ```java
> DefaultHttpClient httpclient = new DefaultHttpClient();
> HttpGet httpGet = new HttpGet(address);
> HttpHost proxy = new HttpHost(proxyHost, proxyPort);
> httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
> httpGet.setHeader("SAP-Connectivity-SCC-Location_ID", locationId);
> if (additionalHeaders != null && !additionalHeaders.isEmpty()) {
> for (Entry<String, String> header : additionalHeaders.entrySet()) {
> httpGet.setHeader(header.getKey(), header.getValue());
> }
> }
> HttpResponse response = httpclient.execute(httpGet);
>
> ```
2. For TCP
> ### Source Code:
> Depending on the environment type there are two types of proxy authentication; via JWT access token and via Username and password. The simplest way to determine the type to be used is to look at cloud connector properties.
>
> ```java
> CloudConnectorContext context = new CloudConnectorContext();
> context.setConnectionType(ConnectionType.TCP);
>
> CloudConnectorProperties cloudConnectorProperties = ITApiFactory.getService(CloudConnectorProperties.class, context);
> AuthType authType = cloudConnectorProperties.getAuthType();
> ```
> ### Source Code:
> Proxy host and proxy port of the cloud connector can be accessed using the below API:
>
> ```java
> cloudConnectorProperties.getProxyPort();
> cloudConnectorProperties.getProxyHost();
> ```
The following are intended to use with appropriate authentication methods only.
> ### Source Code:
> For use with AuthType.PasswordAuthentication
>
> ```java
> cloudConnectorProperties.getUserName(locationId)
>
> ```
For more information, see [Username Password Authentication](https://help.sap.com/docs/CP_CONNECTIVITY/b865ed651e414196b39f8922db2122c7/c2461c31761b488c828e15b71263f3fd.html?locale=en-US&version=Cloud)
> ### Source Code:
> For use with AuthType.JWTTokenAuthentication
>
> ```java
> cloudConnectorProperties.getJWTToken()
>
> ```
For more information, see [JWT Access Token Authentication](https://help.sap.com/docs/CP_CONNECTIVITY/cca91383641e40ffbe03bdc78f00f681/cd1583775afa43f0bb9ec69d9dbcc880.html?locale=en-US&version=Cloud)
2. Save the changes.
