Package io.netty.handler.codec.http2

Class HttpConversionUtil

java.lang.Object

io.netty.handler.codec.http2.HttpConversionUtil

public final class HttpConversionUtil
extends java.lang.Object

Provides utility methods and constants for the HTTP/2 to HTTP conversion

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	HttpConversionUtil.ExtensionHeaderNames	Provides the HTTP header extensions used to carry HTTP/2 information in HTTP objects

Field Summary

Fields

Modifier and Type	Field	Description
static HttpMethod	OUT_OF_MESSAGE_SEQUENCE_METHOD	This will be the method used for HttpRequest objects generated out of the HTTP message flow defined in [RFC 7540], Section 8.1
static java.lang.String	OUT_OF_MESSAGE_SEQUENCE_PATH	This will be the path used for HttpRequest objects generated out of the HTTP message flow defined in [RFC 7540], Section 8.1
static HttpResponseStatus	OUT_OF_MESSAGE_SEQUENCE_RETURN_CODE	This will be the status code used for HttpResponse objects generated out of the HTTP message flow defined in [RFC 7540], Section 8.1

Method Summary

Modifier and Type	Method	Description
static void	addHttp2ToHttpHeaders(int streamId, Http2Headers inputHeaders, FullHttpMessage destinationMessage, boolean addToTrailer)	Translate and add HTTP/2 headers to HTTP/1.x headers.
static void	addHttp2ToHttpHeaders(int streamId, Http2Headers inputHeaders, HttpHeaders outputHeaders, HttpVersion httpVersion, boolean isTrailer, boolean isRequest)	Translate and add HTTP/2 headers to HTTP/1.x headers.
static HttpResponseStatus	parseStatus(java.lang.CharSequence status)	Apply HTTP/2 rules while translating status code to HttpResponseStatus
static FullHttpRequest	toFullHttpRequest(int streamId, Http2Headers http2Headers, ByteBufAllocator alloc, boolean validateHttpHeaders)	Create a new object to contain the request data
static FullHttpRequest	toFullHttpRequest(int streamId, Http2Headers http2Headers, ByteBuf content, boolean validateHttpHeaders)	Create a new object to contain the request data
static FullHttpResponse	toFullHttpResponse(int streamId, Http2Headers http2Headers, ByteBufAllocator alloc, boolean validateHttpHeaders)	Create a new object to contain the response data
static FullHttpResponse	toFullHttpResponse(int streamId, Http2Headers http2Headers, ByteBuf content, boolean validateHttpHeaders)	Create a new object to contain the response data
static Http2Headers	toHttp2Headers(HttpHeaders inHeaders, boolean validateHeaders)
static void	toHttp2Headers(HttpHeaders inHeaders, Http2Headers out)
static Http2Headers	toHttp2Headers(HttpMessage in, boolean validateHeaders)	Converts the given HTTP/1.x headers into HTTP/2 headers.
static HttpRequest	toHttpRequest(int streamId, Http2Headers http2Headers, boolean validateHttpHeaders)	Create a new object to contain the request data.
static HttpResponse	toHttpResponse(int streamId, Http2Headers http2Headers, boolean validateHttpHeaders)	Create a new object to contain the response data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OUT_OF_MESSAGE_SEQUENCE_METHOD

public static final HttpMethod OUT_OF_MESSAGE_SEQUENCE_METHOD

This will be the method used for HttpRequest objects generated out of the HTTP message flow defined in [RFC 7540], Section 8.1

OUT_OF_MESSAGE_SEQUENCE_PATH

public static final java.lang.String OUT_OF_MESSAGE_SEQUENCE_PATH

This will be the path used for HttpRequest objects generated out of the HTTP message flow defined in [RFC 7540], Section 8.1

See Also:

Constant Field Values

OUT_OF_MESSAGE_SEQUENCE_RETURN_CODE

public static final HttpResponseStatus OUT_OF_MESSAGE_SEQUENCE_RETURN_CODE

This will be the status code used for HttpResponse objects generated out of the HTTP message flow defined in [RFC 7540], Section 8.1

Method Detail

parseStatus

public static HttpResponseStatus parseStatus(java.lang.CharSequence status)
                                      throws Http2Exception

Apply HTTP/2 rules while translating status code to HttpResponseStatus

Parameters:

status - The status from an HTTP/2 frame

Returns:

The HTTP/1.x status

Throws:

Http2Exception - If there is a problem translating from HTTP/2 to HTTP/1.x

toFullHttpResponse

public static FullHttpResponse toFullHttpResponse(int streamId,
                                                  Http2Headers http2Headers,
                                                  ByteBufAllocator alloc,
                                                  boolean validateHttpHeaders)
                                           throws Http2Exception

Create a new object to contain the response data

Parameters:

streamId - The stream associated with the response

http2Headers - The initial set of HTTP/2 headers to create the response with

alloc - The ByteBufAllocator to use to generate the content of the message

validateHttpHeaders -

• true to validate HTTP headers in the http-codec
• false not to validate HTTP headers in the http-codec

Returns:

A new response object which represents headers/data

Throws:

Http2Exception - see addHttp2ToHttpHeaders(int, Http2Headers, FullHttpMessage, boolean)

toFullHttpResponse

public static FullHttpResponse toFullHttpResponse(int streamId,
                                                  Http2Headers http2Headers,
                                                  ByteBuf content,
                                                  boolean validateHttpHeaders)
                                           throws Http2Exception

Create a new object to contain the response data

Parameters:

streamId - The stream associated with the response

http2Headers - The initial set of HTTP/2 headers to create the response with

content - ByteBuf content to put in FullHttpResponse

validateHttpHeaders -

• true to validate HTTP headers in the http-codec
• false not to validate HTTP headers in the http-codec

Returns:

A new response object which represents headers/data

Throws:

Http2Exception - see addHttp2ToHttpHeaders(int, Http2Headers, FullHttpMessage, boolean)

toFullHttpRequest

public static FullHttpRequest toFullHttpRequest(int streamId,
                                                Http2Headers http2Headers,
                                                ByteBufAllocator alloc,
                                                boolean validateHttpHeaders)
                                         throws Http2Exception

Create a new object to contain the request data

Parameters:

streamId - The stream associated with the request

http2Headers - The initial set of HTTP/2 headers to create the request with

alloc - The ByteBufAllocator to use to generate the content of the message

validateHttpHeaders -

• true to validate HTTP headers in the http-codec
• false not to validate HTTP headers in the http-codec

Returns:

A new request object which represents headers/data

Throws:

Http2Exception - see addHttp2ToHttpHeaders(int, Http2Headers, FullHttpMessage, boolean)

toFullHttpRequest

public static FullHttpRequest toFullHttpRequest(int streamId,
                                                Http2Headers http2Headers,
                                                ByteBuf content,
                                                boolean validateHttpHeaders)
                                         throws Http2Exception

Create a new object to contain the request data

Parameters:

streamId - The stream associated with the request

http2Headers - The initial set of HTTP/2 headers to create the request with

content - ByteBuf content to put in FullHttpRequest

validateHttpHeaders -

• true to validate HTTP headers in the http-codec
• false not to validate HTTP headers in the http-codec

Returns:

A new request object which represents headers/data

Throws:

Http2Exception - see addHttp2ToHttpHeaders(int, Http2Headers, FullHttpMessage, boolean)

toHttpRequest

public static HttpRequest toHttpRequest(int streamId,
                                        Http2Headers http2Headers,
                                        boolean validateHttpHeaders)
                                 throws Http2Exception

Create a new object to contain the request data.

Parameters:

streamId - The stream associated with the request

http2Headers - The initial set of HTTP/2 headers to create the request with

validateHttpHeaders -

• true to validate HTTP headers in the http-codec
• false not to validate HTTP headers in the http-codec

Returns:

A new request object which represents headers for a chunked request

Throws:

Http2Exception - see addHttp2ToHttpHeaders(int, Http2Headers, FullHttpMessage, boolean)

toHttpResponse

public static HttpResponse toHttpResponse(int streamId,
                                          Http2Headers http2Headers,
                                          boolean validateHttpHeaders)
                                   throws Http2Exception

Create a new object to contain the response data.

Parameters:

streamId - The stream associated with the response

http2Headers - The initial set of HTTP/2 headers to create the response with

validateHttpHeaders -

• true to validate HTTP headers in the http-codec
• false not to validate HTTP headers in the http-codec

Returns:

A new response object which represents headers for a chunked response

Throws:

Http2Exception - see addHttp2ToHttpHeaders(int, Http2Headers, HttpHeaders, HttpVersion, boolean, boolean)

addHttp2ToHttpHeaders

public static void addHttp2ToHttpHeaders(int streamId,
                                         Http2Headers inputHeaders,
                                         FullHttpMessage destinationMessage,
                                         boolean addToTrailer)
                                  throws Http2Exception

Translate and add HTTP/2 headers to HTTP/1.x headers.

Parameters:

streamId - The stream associated with sourceHeaders.

inputHeaders - The HTTP/2 headers to convert.

destinationMessage - The object which will contain the resulting HTTP/1.x headers.

addToTrailer - true to add to trailing headers. false to add to initial headers.

Throws:

Http2Exception - If not all HTTP/2 headers can be translated to HTTP/1.x.

See Also:

addHttp2ToHttpHeaders(int, Http2Headers, HttpHeaders, HttpVersion, boolean, boolean)

addHttp2ToHttpHeaders

public static void addHttp2ToHttpHeaders(int streamId,
                                         Http2Headers inputHeaders,
                                         HttpHeaders outputHeaders,
                                         HttpVersion httpVersion,
                                         boolean isTrailer,
                                         boolean isRequest)
                                  throws Http2Exception

Translate and add HTTP/2 headers to HTTP/1.x headers.

Parameters:

streamId - The stream associated with sourceHeaders.

inputHeaders - The HTTP/2 headers to convert.

outputHeaders - The object which will contain the resulting HTTP/1.x headers..

httpVersion - What HTTP/1.x version outputHeaders should be treated as when doing the conversion.

isTrailer - true if outputHeaders should be treated as trailing headers. false otherwise.

isRequest - true if the outputHeaders will be used in a request message. false for response message.

Throws:

Http2Exception - If not all HTTP/2 headers can be translated to HTTP/1.x.

toHttp2Headers

public static Http2Headers toHttp2Headers(HttpMessage in,
                                          boolean validateHeaders)

Converts the given HTTP/1.x headers into HTTP/2 headers. The following headers are only used if they can not be found in from the HOST header or the Request-Line as defined by rfc7230

• HttpConversionUtil.ExtensionHeaderNames.SCHEME

HttpConversionUtil.ExtensionHeaderNames.PATH is ignored and instead extracted from the Request-Line.

toHttp2Headers

public static Http2Headers toHttp2Headers(HttpHeaders inHeaders,
                                          boolean validateHeaders)

toHttp2Headers

public static void toHttp2Headers(HttpHeaders inHeaders,
                                  Http2Headers out)