TransportRequest (Spring Framework 5.2.12.RELEASE API)

```
public interface TransportRequest
```
Exposes information, typically to Transport and session implementations, about a request to connect to a SockJS server endpoint over a given transport.
Note that a single request to connect via SockJsClient may result in multiple instances of TransportRequest, one for each transport before a connection is successfully established.
从以下版本开始:
4.1
作者:
Rossen Stoyanchev

方法概要

所有方法实例方法抽象方法
修饰符和类型	方法	说明
`void`	`addTimeoutTask(Runnable runnable)`	Register a timeout cleanup task to invoke if the SockJS session is not fully established within the calculated retransmission timeout period.
`HttpHeaders`	`getHandshakeHeaders()`	Return the headers to send with the connect request.
`HttpHeaders`	`getHttpRequestHeaders()`	Return the headers to add to all other HTTP requests besides the handshake request such as XHR receive and send requests.
`SockJsMessageCodec`	`getMessageCodec()`	Return the message codec to use for encoding SockJS messages.
`SockJsUrlInfo`	`getSockJsUrlInfo()`	Return information about the SockJS URL including server and session ID.
`URI`	`getTransportUrl()`	Return the transport URL for the given transport.
`Principal`	`getUser()`	Return the user associated with the request, if any.

- 方法详细资料
  - getSockJsUrlInfo
```
SockJsUrlInfo getSockJsUrlInfo()
```
    Return information about the SockJS URL including server and session ID.
  - getHandshakeHeaders
```
HttpHeaders getHandshakeHeaders()
```
    Return the headers to send with the connect request.
  - getHttpRequestHeaders
```
HttpHeaders getHttpRequestHeaders()
```
    Return the headers to add to all other HTTP requests besides the handshake request such as XHR receive and send requests.
    从以下版本开始:
    4.2
  - getTransportUrl
```
URI getTransportUrl()
```
    Return the transport URL for the given transport.
    For an XhrTransport this is the URL for receiving messages.
  - getUser
```
@Nullable
Principal getUser()
```
    Return the user associated with the request, if any.
  - getMessageCodec
```
SockJsMessageCodec getMessageCodec()
```
    Return the message codec to use for encoding SockJS messages.
  - addTimeoutTask
```
void addTimeoutTask(Runnable runnable)
```
    Register a timeout cleanup task to invoke if the SockJS session is not fully established within the calculated retransmission timeout period.