# Netstack

## Overview

Provides C APIs of the SSL/TLS certificate chain verification module.

**Since**: 11
## Files

| Name| Description|
| -- | -- |
| [net_ssl_c.h](capi-net-ssl-c-h.md) | Defines the C APIs of the SSL/TLS certificate chain verification module.|
| [net_ssl_c_type.h](capi-net-ssl-c-type-h.md) | Defines data structures for the C APIs of the SSL/TLS certificate chain verification module.|
| [net_websocket.h](capi-net-websocket-h.md) | Defines the APIs of the WebSocket client module.|
| [net_websocket_type.h](capi-net-websocket-type-h.md) | Defines data structures for the C APIs of the WebSocket client module.|