Android APIs
Added in API level 1
package

org.apache.http.io

The transport layer abstraction of the HTTP components. This layer is used to transfer messages over connections. Connections are typically based on sockets: plain or secure, direct or via SOCKS hosts, with bandwidth throttling, or whatever else you might think of. However, opening connections is not within the responsibility of HttpCore.

Interfaces

HttpMessageParser This interface was deprecated in API level 22. Please use openConnection() instead. Please visit this webpage for further details.  
HttpMessageWriter This interface was deprecated in API level 22. Please use openConnection() instead. Please visit this webpage for further details.  
HttpTransportMetrics This interface was deprecated in API level 22. Please use openConnection() instead. Please visit this webpage for further details.  
SessionInputBuffer This interface was deprecated in API level 22. Please use openConnection() instead. Please visit this webpage for further details.  
SessionOutputBuffer This interface was deprecated in API level 22. Please use openConnection() instead. Please visit this webpage for further details.