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    Transparent proxy conversion of transmission control protocol (TCP) fast open connection
    1.
    发明授权
    Transparent proxy conversion of transmission control protocol (TCP) fast open connection 有权

    公开(公告)号：US11700321B2

    公开(公告)日：2023-07-11

    申请号：US17509935

    申请日：2021-10-25

    Applicant: CLOUDFLARE, INC.

    Inventor： Christopher Philip Branch

    IPC: H04L12/00 ,  H04L69/163 ,  H04L9/40 ,  H04L69/166 ,  H04L67/56

    CPC classification number: H04L69/163 ,  H04L63/126 ,  H04L67/56 ,  H04L69/166

    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.

    Opportunistic transmission control protocol (TCP) connection establishment
    4.
    发明授权
    Opportunistic transmission control protocol (TCP) connection establishment 有权

    公开(公告)号：US11349934B2

    公开(公告)日：2022-05-31

    申请号：US17138396

    申请日：2020-12-30

    Applicant: CLOUDFLARE, INC.

    Inventor： Christopher Philip Branch

    IPC: H04L67/141 ,  H04L67/01 ,  H04L7/00 ,  H04L69/326

    Abstract: A TCP intermediate device receives a first SYN packet from a TCP client to establish a TCP connection between the TCP client and a TCP origin server. Prior to the TCP connection being fully established, the TCP intermediate device transmits a second SYN packet to the TCP origin server. The TCP intermediate device transmits a first SYN-ACK packet to the TCP client. The TCP intermediate device receives a first ACK packet from the TCP client. The TCP intermediate device receives a second SYN-ACK packet from the TCP origin server. The TCP intermediate device transmits a second ACK packet to the TCP origin server as part of establishing the third TCP connection.

    METHOD AND APPARATUS OF AUTOMATIC ROUTE OPTIMIZATION IN A PRIVATE VIRTUAL NETWORK FOR CLIENT DEVICES OF A LOCAL NETWORK
    5.
    发明申请
    METHOD AND APPARATUS OF AUTOMATIC ROUTE OPTIMIZATION IN A PRIVATE VIRTUAL NETWORK FOR CLIENT DEVICES OF A LOCAL NETWORK 审中-公开

    公开(公告)号：US20200336409A1

    公开(公告)日：2020-10-22

    申请号：US16387431

    申请日：2019-04-17

    Applicant: CLOUDFLARE, INC.

    Inventor： Christopher Philip Branch

    IPC: H04L12/721 ,  H04L29/06 ,  H04L12/751 ,  H04L12/741

    Abstract: A method and a VPN server for VPN route optimization are described. The VPN server establishes a first VPN connection with a first client device and a second VPN connection with a second client device. The VPN server determines that the first and second client devices are part of a same local network; and responsive to determining that the first and the second client devices are part of the same local network, transmits, to the first client device through the first VPN connection, a second public network address of the second client device, and to the second client device through the second VPN connection, a first public network address of the first client device. The transmission of the first and second public network addresses causes the first client device to determine an optimal route from the first client device to the second client device for the traffic in the VPN.

    Method and apparatus for traffic optimization in virtual private networks (VPNs)
    8.
    发明授权
    Method and apparatus for traffic optimization in virtual private networks (VPNs) 有权

    公开(公告)号：US11316787B2

    公开(公告)日：2022-04-26

    申请号：US17020605

    申请日：2020-09-14

    Applicant: CLOUDFLARE, INC.

    Inventor： Christopher Philip Branch ,  Dane Orion Knecht

    IPC: H04L45/745 ,  H04L12/46 ,  H04L67/56 ,  H04L67/01 ,  H04L67/10

    Abstract: Method and apparatus for traffic optimization in virtual private networks (VPNs). A client device establishes a first VPN connection with a first server based on first VPN credentials. Traffic is transmitted and received through the first VPN connection to and from the first server. A second server is identified based on traffic optimization criteria that need to be satisfied by the VPN connection. Upon receipt of the identification of the second server the client device is to use the second server as a destination of a second VPN connection. The second VPN connection satisfies a set of traffic optimization goals for at least one flow from the flows forwarded through the first VPN connection. Based on the identification of the second server, the client device establishes the second VPN connection for the flow between the client device and the second server.

    Transparent Proxy Conversion of Transmission Control Protocol (TCP) Fast Open Connection
    9.
    发明申请
    Transparent Proxy Conversion of Transmission Control Protocol (TCP) Fast Open Connection 有权

    公开(公告)号：US20210203760A1

    公开(公告)日：2021-07-01

    申请号：US17138410

    申请日：2020-12-30

    Applicant: CLOUDFLARE, INC.

    Inventor： Christopher Philip Branch

    IPC: H04L29/06 ,  H04L29/08

    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 TFO cookie set by the TCP intermediate device. The TCP intermediate device receives a first ACK packet 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 does not indicate support for TFO. An ACK packet to the TCP origin server. Sometime after the TCP connection is completed, the TCP intermediate device receives a SYN packet from the TCP client that includes the TFO cookie and a payload of data. The TCP intermediate device establishes a TCP connection with the TCP origin server and transmits the payload of data to the TCP origin server.

    Establishing and using a tunnel from an origin server in a distributed edge compute and routing service
    10.
    发明授权
    Establishing and using a tunnel from an origin server in a distributed edge compute and routing service 有权

    公开(公告)号：US10666613B2

    公开(公告)日：2020-05-26

    申请号：US16160294

    申请日：2018-10-15

    Applicant: CLOUDFLARE, INC.

    Inventor： Dane Orion Knecht ,  John Graham-Cumming ,  Dani Grant ,  Christopher Philip Branch ,  Tom Paseka

    IPC: H04L29/12 ,  H04L29/08 ,  H04L29/06 ,  H04L12/46

    Abstract: An edge server of a distributed edge compute and routing service receives a tunnel connection request from a tunnel client residing on an origin server, that requests a tunnel be established between the edge server and the tunnel client. The request identifies the hostname that is to be tunneled. An IP address is assigned for the tunnel. DNS record(s) are added or changed that associate the hostname with the assigned IP address. Routing rules are installed in the edge servers of the distributed edge compute and routing service to reach the edge server for the tunneled hostname. The edge server receives a request for a resource of the tunneled hostname from another edge server that received the request from a client, where the other edge server is not connected to the origin server. The request is transmitted from the edge server to the origin server over the tunnel.

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