The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 2023
Filed:
Oct. 25, 2021
Cloudflare, Inc., San Francisco, CA (US);
Christopher Philip Branch, Romford, GB;
CLOUDFLARE, INC., San Francisco, CA (US);
Abstract
A TCP intermediate device receives a SYN packet from a TCP client that is destined for a TCP origin server and indicates support for TCP fast open (TFO). A SYN-ACK packet is transmitted to the TCP client that includes a first TFO cookie set by the TCP intermediate device. An ACK packet is received from the TCP client. A SYN packet is sent to the TCP origin server and a second SYN-ACK packet is received in response that includes a second TFO cookie set by the TCP origin server. An ACK packet to the TCP origin server. Sometime after the TCP connection is completed, a SYN packet from the TCP client is received that includes the first TFO cookie and a payload of data. The TCP intermediate device modifies the SYN packet to include the second TFO cookie and transmits the modified SYN packet to the TCP origin server.