| # Introduction {#mainpage} |
| |
| The Qpid Proton C API enables writing clients and servers that send |
| and receive messages using the AMQP protocol. It is part of the |
| [Qpid Proton](https://qpid.apache.org/proton/index.html) suite of |
| messaging APIs. |
| |
| ## Modules |
| |
| The @ref core module is a collection of types and functions |
| representing AMQP concepts and key elements of the API. Together they |
| form a "protocol engine" API to create AMQP @ref connection |
| "connections" and @ref link "links", handle @ref event "events", and |
| send and receive @ref message "messages". |
| |
| The @ref types module contains C types and functions for handling |
| AMQP- and API-specific data types. |
| |
| The @ref codec module has functions for AMQP data encoding and |
| decoding. |
| |
| The @ref io module contains interfaces for integrating with |
| platform-native network IO. See @ref io_page for more information. |
| |
| ## Conventions |
| |
| Elements of the API marked as **Unsettled API**, including any |
| elements contained within them, are still evolving and thus are |
| subject to change. They are available to use, but newer versions of |
| Proton may require changes to your application source code. |
| |
| Elements marked **Deprecated** are slated for removal in a future |
| release. |
