---
title: "RTCDtlsTransport | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Interface RTCDtlsTransport

The **`RTCDtlsTransport`** interface provides access to information about the Datagram Transport Layer Security (DTLS) transport over which a RTCPeerConnection's RTP and RTCP packets are sent and received by its RTCRtpSender and RTCRtpReceiver objects.

[MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDtlsTransport)

interface RTCDtlsTransport {  
    [iceTransport](#icetransport): [RTCIceTransport](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCIceTransport/);  
    [onerror](#onerror): ((this: RTCDtlsTransport, ev: [RTCErrorEvent](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCErrorEvent/)) \=> any) | null;  
    [onstatechange](#onstatechange): ((this: RTCDtlsTransport, ev: Event) \=> any) | null;  
    [state](#state): [RTCDtlsTransportState](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.RTCDtlsTransportState/);  
    [addEventListener](#addeventlistener-1)<[K](#addeventlistenerk) extends keyof [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\>(  
        type: [K](#addeventlistenerk),  
        listener: (this: RTCDtlsTransport, ev: [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\[[K](#addeventlistenerk)\]) \=> any,  
        options?: boolean | AddEventListenerOptions,  
    ): void;  
    [addEventListener](#addeventlistener-2)(  
        type: string,  
        listener: [EventListenerOrEventListenerObject](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.EventListenerOrEventListenerObject/),  
        options?: boolean | AddEventListenerOptions,  
    ): void;  
    [dispatchEvent](#dispatchevent-1)(event: Event): boolean;  
    [getRemoteCertificates](#getremotecertificates-1)(): ArrayBuffer\[\];  
    [removeEventListener](#removeeventlistener-1)<[K](#removeeventlistenerk) extends keyof [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\>(  
        type: [K](#removeeventlistenerk),  
        listener: (this: RTCDtlsTransport, ev: [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\[[K](#removeeventlistenerk)\]) \=> any,  
        options?: boolean | EventListenerOptions,  
    ): void;  
    [removeEventListener](#removeeventlistener-2)(  
        type: string,  
        listener: [EventListenerOrEventListenerObject](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.EventListenerOrEventListenerObject/),  
        options?: boolean | EventListenerOptions,  
    ): void;  
}

#### Hierarchy

-   EventTarget
    -   RTCDtlsTransport

##### Index

### Properties[](#properties)

[iceTransport](#icetransport) [onerror](#onerror) [onstatechange](#onstatechange) [state](#state)

### Methods[](#methods)

[addEventListener](#addeventlistener) [dispatchEvent](#dispatchevent) [getRemoteCertificates](#getremotecertificates) [removeEventListener](#removeeventlistener)

## Properties[](#properties-1)

### `Readonly`iceTransport[](#icetransport)

iceTransport: [RTCIceTransport](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCIceTransport/)

The **`iceTransport`** read-only property of the RTCDtlsTransport interface contains a reference to the underlying RTCIceTransport.

[MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDtlsTransport/iceTransport)

### onerror[](#onerror)

onerror: ((this: RTCDtlsTransport, ev: [RTCErrorEvent](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCErrorEvent/)) \=> any) | null

[MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDtlsTransport/error_event)

### onstatechange[](#onstatechange)

onstatechange: ((this: RTCDtlsTransport, ev: Event) \=> any) | null

[MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDtlsTransport/statechange_event)

### `Readonly`state[](#state)

state: [RTCDtlsTransportState](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.RTCDtlsTransportState/)

The **`state`** read-only property of the RTCDtlsTransport interface provides information which describes a Datagram Transport Layer Security (DTLS) transport state.

[MDN Reference](https://developer.mozilla.org/docs/Web/API/RTCDtlsTransport/state)

## Methods[](#methods-1)

### addEventListener[](#addeventlistener)

-   addEventListener<[K](#addeventlistenerk) extends keyof [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\>(  
        type: [K](#addeventlistenerk),  
        listener: (this: RTCDtlsTransport, ev: [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\[[K](#addeventlistenerk)\]) \=> any,  
        options?: boolean | AddEventListenerOptions,  
    ): void[](#addeventlistener-1)
    
    The **`addEventListener()`** method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
    
    [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/addEventListener)
    
    #### Type Parameters
    
    -   K extends keyof [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)
    
    #### Parameters
    
    -   type: [K](#addeventlistenerk)
    -   listener: (this: RTCDtlsTransport, ev: [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\[[K](#addeventlistenerk)\]) \=> any
    -   `Optional`options: boolean | AddEventListenerOptions
    
    #### Returns void
    
    Overrides EventTarget.addEventListener
    
-   addEventListener(  
        type: string,  
        listener: [EventListenerOrEventListenerObject](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.EventListenerOrEventListenerObject/),  
        options?: boolean | AddEventListenerOptions,  
    ): void[](#addeventlistener-2)
    
    The **`addEventListener()`** method of the EventTarget interface sets up a function that will be called whenever the specified event is delivered to the target.
    
    [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/addEventListener)
    
    #### Parameters
    
    -   type: string
    -   listener: [EventListenerOrEventListenerObject](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.EventListenerOrEventListenerObject/)
    -   `Optional`options: boolean | AddEventListenerOptions
    
    #### Returns void
    
    Overrides EventTarget.addEventListener
    

### dispatchEvent[](#dispatchevent)

-   dispatchEvent(event: Event): boolean[](#dispatchevent-1)
    
    The **`dispatchEvent()`** method of the EventTarget sends an Event to the object, (synchronously) invoking the affected event listeners in the appropriate order. The normal event processing rules (including the capturing and optional bubbling phase) also apply to events dispatched manually with dispatchEvent().
    
    [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/dispatchEvent)
    
    #### Parameters
    
    -   event: Event
    
    #### Returns boolean
    
    Inherited from EventTarget.dispatchEvent
    

### getRemoteCertificates[](#getremotecertificates)

-   getRemoteCertificates(): ArrayBuffer\[\][](#getremotecertificates-1)
    
    #### Returns ArrayBuffer\[\]
    

### removeEventListener[](#removeeventlistener)

-   removeEventListener<[K](#removeeventlistenerk) extends keyof [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\>(  
        type: [K](#removeeventlistenerk),  
        listener: (this: RTCDtlsTransport, ev: [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\[[K](#removeeventlistenerk)\]) \=> any,  
        options?: boolean | EventListenerOptions,  
    ): void[](#removeeventlistener-1)
    
    The **`removeEventListener()`** method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener() from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.
    
    [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
    
    #### Type Parameters
    
    -   K extends keyof [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)
    
    #### Parameters
    
    -   type: [K](#removeeventlistenerk)
    -   listener: (this: RTCDtlsTransport, ev: [RTCDtlsTransportEventMap](https://docs.maptiler.com/sdk-js/api-reference/interfaces/Externals.RTCDtlsTransportEventMap/)\[[K](#removeeventlistenerk)\]) \=> any
    -   `Optional`options: boolean | EventListenerOptions
    
    #### Returns void
    
    Overrides EventTarget.removeEventListener
    
-   removeEventListener(  
        type: string,  
        listener: [EventListenerOrEventListenerObject](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.EventListenerOrEventListenerObject/),  
        options?: boolean | EventListenerOptions,  
    ): void[](#removeeventlistener-2)
    
    The **`removeEventListener()`** method of the EventTarget interface removes an event listener previously registered with EventTarget.addEventListener() from the target. The event listener to be removed is identified using a combination of the event type, the event listener function itself, and various optional options that may affect the matching process; see Matching event listeners for removal.
    
    [MDN Reference](https://developer.mozilla.org/docs/Web/API/EventTarget/removeEventListener)
    
    #### Parameters
    
    -   type: string
    -   listener: [EventListenerOrEventListenerObject](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.EventListenerOrEventListenerObject/)
    -   `Optional`options: boolean | EventListenerOptions
    
    #### Returns void
    
    Overrides EventTarget.removeEventListener