US 10,122,816 B2Granted

HTTP proxy

AssigneeFortinet, Inc.

InventorJianwen Zhang

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Abstract

Systems and methods for translating between an older version of HTTP and a newer version of HTTP are provided. According to an embodiment, a first request message, compliant with the newer version and directed to a server that supports the older version but does not support the newer version, is received by the proxy from a client that supports the newer version. A second request message, compliant with the older version, is created by the proxy by translating the first request message. The second request message is sent to the server by the proxy. A first response message, compliant with the older version and directed to the client, is received by the proxy from the server. A second response message, compliant with the newer version, is created by the proxy by translating the first response message. The second response message is sent to the client by the proxy.

Claims28

Dependent claims

A method comprising:

receiving, from a client, by a proxy that translates between a newer version of Hypertext Transfer Protocol (HTTP) and an older version of HTTP and running within an Application Delivery Controller (ADC) or a Web Application Filter (WAF) logically interposed between the client that supports the newer version of HTTP and a server that supports the older version of HTTP but does not support the newer version of HTTP, a first HTTP request message that is compliant with the newer version of HTTP and specifies a resource of the server, wherein the older version of HTTP comprises HTTP version 1 (HTTP/1) and wherein the newer version of HTTP comprises HTTP version 2 (HTTP/2);
creating, by the proxy, a second HTTP request message that is compliant with the older version of HTTP by translating the first HTTP request message;
sending to the server, by the proxy, the second HTTP request message;
responsive to the second HTTP request message, receiving from the server, by the proxy, a first HTTP response message that is compliant with the older version of HTTP and contains payload data representing content of the resource;
creating, by the proxy, a second HTTP response message that is compliant with the newer version of HTTP by translating the first HTTP response message, wherein header fields of the first HTTP request message and the second HTTP response message are compressed;
sending to the client, by the proxy, the second HTTP response message;
and
wherein the proxy includes an index table in which mappings of header field representations to corresponding header fields are stored and wherein complete header fields of HTTP/2 request messages are decoded based on the index table.

5 more elements

A computer system comprising:

a non-transitory storage device having embodied therein instructions representing a proxy application that translates between a newer version of Hypertext Transfer Protocol (HTTP) and an older version of HTTP;
and
one or more processors coupled to the non-transitory storage device and operable to execute the proxy application to perform a method comprising:
receiving, from a client that supports the newer version of HTTP, a first HTTP request message that is compliant with the newer version of HTTP and that specifies a resource of a server that supports the older version of HTTP but does not support the newer version of HTTP, wherein the older version of HTTP comprises HTTP version 1 (HTTP/1) and wherein the newer version of HTTP comprises HTTP version 2 (HTTP/2);
creating a second HTTP request message that is compliant with the older version of HTTP by translating the first HTTP request message;
sending the second HTTP request message to the server;
responsive to the second HTTP request message, receiving, from the server, a first HTTP response message that is compliant with the older version of HTTP and that contains payload data representing content of the resource;
creating a second HTTP response message that is compliant with the newer version of HTTP by translating the first HTTP response message wherein header fields of the first HTTP request message and the second HTTP response message are compressed;
sending the second HTTP response message to the client;
and
wherein the proxy includes an index table in which mappings of header field representations to corresponding header fields are stored and wherein complete header fields of HTTP/2 request messages are decoded based on the index table.

8 more elements

A method comprising:

receiving, from a client, by a proxy that translates between a newer version of Hypertext Transfer Protocol (HTTP) and an older version of HTTP and running within an Application Delivery Controller (ADC) or a Web Application Filter (WAF) logically interposed between the client that supports the newer version of HTTP and a server that supports the older version of HTTP but does not support the newer version of HTTP, a first HTTP request message that is compliant with the newer version of HTTP and specifies a resource of the server, wherein the older version of HTTP comprises HTTP version 1 (HTTP/1) and wherein the newer version of HTTP comprises HTTP version 2 (HTTP/2);
creating, by the proxy, a second HTTP request message that is compliant with the older version of HTTP by translating the first HTTP request message;
sending to the server, by the proxy, the second HTTP request message;
responsive to the second HTTP request message, receiving from the server, by the proxy, a first HTTP response message that is compliant with the older version of HTTP and contains payload data representing content of the resource;
creating, by the proxy, a second HTTP response message that is compliant with the newer version of HTTP by translating the first HTTP response message, including:
breaking the first HTTP response message into one or more frames for the second HTTP response message based on HTTP/2 syntax;
and
compressing header fields of the second HTTP response message based on a compression mechanism associated with HTTP/2;
and
sending to the client, by the proxy, the second HTTP response message.

7 more elements

A computer system comprising:

a non-transitory storage device having embodied therein instructions representing a proxy application that translates between a newer version of Hypertext Transfer Protocol (HTTP) and an older version of HTTP;
and
one or more processors coupled to the non-transitory storage device and operable to execute the proxy application to perform a method comprising:
receiving, from a client that supports the newer version of HTTP, a first HTTP request message that is compliant with the newer version of HTTP and that specifies a resource of a server that supports the older version of HTTP but does not support the newer version of HTTP, wherein the older version of HTTP comprises HTTP version 1 (HTTP/1) and wherein the newer version of HTTP comprises HTTP version 2 (HTTP/2);
creating a second HTTP request message that is compliant with the older version of HTTP by translating the first HTTP request message;
sending the second HTTP request message to the server;
responsive to the second HTTP request message, receiving, from the server, a first HTTP response message that is compliant with the older version of HTTP and that contains payload data representing content of the resource;
creating a second HTTP response message that is compliant with the newer version of HTTP by translating the first HTTP response message, including:
breaking the first HTTP response message into one or more frames for the second HTTP response message based on HTTP/2 syntax;
and
compressing header fields of the second HTTP response message based on a compression mechanism associated with HTTP/2;
and
sending the second HTTP response message to the client.

10 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/436,790Filed 18 Feb 2017 · continuation
Priority: 24 Mar 2015
Published: US 2017/0163758 A18 Jun 2017
Granted: 6 Nov 2018
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H04L 67/02
Protocols: based on web technology, e.g. hypertext transfer protocol [HTTP]
H04L 67/565
Provisioning of proxy services: conversion or adaptation of application format or content
H04L 67/5651
Conversion or adaptation of application format or content: reducing the amount or size of exchanged application data
H04L 67/63
Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and…: routing…

Family

Application14/667,594Parent of this continuation · filed 24 Mar 2015
US 2017/0163758 A1Pre-grant publication · published 8 Jun 2017
US 9,609,078 B2Parent of this continuation
US 2016/0285989 A1Published application
US 10,122,816 B2This patent

From the US filing history. Foreign family members aren’t listed.

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