Concealed datagram-based tunnel for real-time communications

Patent metadata

Field	Value
Publication number	US-2016269285-A1
Application number	US-201514657227-A
Country	US
Kind code	A1
Filing date	Mar 13, 2015
Priority date	Mar 13, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A system performs tunneling of real-time communications (“RTC”). The system establishes a tunnel between a tunneling client and a tunneling server. The system then receives a packet over the tunnel. The packet is configured according to an outer transport protocol of the tunnel and includes a datagram-based payload and a stream-based header. The system processes the packet according to a datagram-based outer transport protocol based on information in the stream-based header.

First claim

What is claimed is:

1 . A computer readable medium having instructions stored thereon that, when executed by a processor, cause the processor to perform tunneling for real-time communications (RTC), the performing comprising:
establishing a tunnel between a tunneling client and a tunneling server; receiving a packet over the tunnel, wherein the packet is configured according to an outer transport protocol of the tunnel and includes a datagram-based payload and a stream-based header; and processing the packet according to a datagram-based outer transport protocol based on information in the stream-based header.

2 . The computer readable medium of claim 1 ,
wherein the stream-based header is configured to allow the packet to traverse a security device that allows stream-based packets to traverse in an Internet protocol (IP) network.

3 . The computer readable medium of claim 1 ,
wherein the tunnel is established according to a tunneled services control function (TSCF) standard.

4 . The computer readable medium of claim 1 ,
wherein the stream-based header is according to a transmission control protocol (TCP); wherein the datagram-based outer transport protocol is a user datagram protocol (UDP).

5 . The computer readable medium of claim 4 ,
wherein the packet is signaled as TCP traffic over a network layer in an Internet protocol (IP) network.

6 . The computer readable medium of claim 4 ,
wherein, within the stream-based header, a sequence number field, an acknowledgement number field, a code bits field, a window size field, and an urgent field are set to zero; wherein, within the stream-based header, a header length field is set to 5.

7 . The computer readable medium of claim 4 ,
wherein, within the stream-based header, a checksum field is calculated based on TCP rules such that the packet traverses security devices in an Internet protocol (IP) network.

8 . A method of tunneling for real-time communications (RTC), comprising:
establishing a tunnel between a tunneling client and a tunneling server; receiving a packet over the tunnel, wherein the packet is configured according to an outer transport protocol of the tunnel and includes a datagram-based payload and a stream-based header; and processing the packet according to a datagram-based outer transport protocol based on information in the stream-based header.

9 . The method of claim 8 ,
wherein the stream-based header is configured to allow the packet to traverse a security device that allows stream-based packets to traverse in an Internet protocol (IP) network.

10 . The method of claim 8 ,
wherein the tunnel is established according to a tunneled services control function (TSCF) standard.

11 . The method of claim 8 ,
wherein the stream-based header is according to a transmission control protocol (TCP); wherein the datagram-based outer transport protocol is a user datagram protocol (UDP).

12 . The method of claim 11 ,
wherein the packet is signaled as TCP traffic over a network layer in an Internet protocol (IP) network.

13 . The method of claim 11 ,
wherein, within the stream-based header, a sequence number field, an acknowledgement number field, a code bits field, a window size field, and an urgent field are set to zero; wherein, within the stream-based header, a header length field is set to 5.

14 . The method of claim 11 ,
wherein, within the stream-based header, a checksum field is calculated based on TCP rules such that the packet traverses security devices in an Internet protocol (IP) network.

15 . A system for tunneling of real-time communications (RTC), comprising:
an establishing module that establishes a tunnel between a tunneling client and a tunneling server; a receiving module that receives a packet over the tunnel, wherein the packet is configured according to an outer transport protocol of the tunnel and includes a datagram-based payload and a stream-based header; and a processing module that processes the packet according to a datagram-based outer transport protocol based on information in the stream-based header.

16 . The system of claim 15 ,
wherein the stream-based header is configured to allow the packet to traverse a security device that allows stream-based packets to traverse in an Internet protocol (IP) network.

17 . The system of claim 15 ,
wherein the tunnel is established according to a tunneled services control function (TSCF) standard.

18 . The system of claim 15 ,
wherein the stream-based header is according to a transmission control protocol (TCP); wherein the datagram-based outer transport protocol is a user datagram protocol (UDP).

19 . The system of claim 18 ,
wherein the packet is signaled as TCP traffic over a network layer in an Internet protocol (IP) network.

20 . The system of claim 18 ,
wherein, within the stream-based header, a sequence number field, an acknowledgement number field, a code bits field, a window size field, and an urgent field are set to zero; wherein, within the stream-based header, a header length field is set to 5.

Assignees

• Oracle Int Corp

Inventors

• Herrero Rolando
• Katz Henry
• Deng Michael Y

Classifications

• H04L12/4633

  Interconnection of networks using encapsulation techniques, e.g. tunneling · CPC title

• H04L45/74 Primary

  Address processing for routing · CPC title

• H04L65/1069

  Session establishment or de-establishment · CPC title

• H04L65/1101

  Session protocols · CPC title