System and method for processing media requests during telephony sessions

• US 10,694,042 B2
• Filed: 01/11/2018
• Issued: 06/23/2020
• Est. Priority Date: 04/02/2008
• Status: Active Grant

• Current Assignee: Twilio, Inc.
• Original Assignee: Twilio, Inc.
• Inventors: Lawson, Jeff, Wolthuis, John, Cooke, Evan
• Primary Examiner(s): Huynh, Khoa
• Application Number:
  US15/868,796
• Publication Number:
  US 20180131813A1
• Time in Patent Office: 894 Days
• CPC Class Codes: G06F 9/541 via adapters, e.g. between incompatible applications
• CPC Class Codes: H04L 65/1013 Network architectures, gateways, control or user entities
• CPC Class Codes: H04L 65/1045 Proxies, e.g. for session initiation protocol [SIP]
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1104 Session initiation protocol [SIP]
• CPC Class Codes: H04L 67/02 based on web technology, e.g. hypertext transfer protocol [HTTP]
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/0643 Hash functions, e.g. MD5, SHA, HMAC or f9 MAC
• CPC Class Codes: H04L 9/3247 involving digital signatures
• CPC Class Codes: H04M 1/2473 Telephone terminals interfacing a personal computer, e.g. using an API (Application Programming Interface) details of API H04M7/0021
• CPC Class Codes: H04M 7/0021 Details of Application Programming Interfaces
• CPC Class Codes: H04M 7/003 Click to dial services
• CPC Class Codes: H04M 7/0075 Details of addressing, directories or routing tables

Abstract

In a preferred embodiment, the method of caching media used in a telephony application includes: receiving a media request; sending the media request to a media layer using HTTP; the a media layer performing the steps of checking in a cache for the media resource; processing the media request within a media processing server; and storing the processed media in the cache as a telephony compatible resource specified by a persistent address. The system of the preferred embodiment includes a call router and a media layer composed of a cache and media processing server.

Claims

1. A method comprising:

receiving, by a telephony platform, a first media request to access a first media item in relation to a first telephony session, the first media request initiated by a first application utilizing communication services provided by the telephony platform, the first media request including a specified Universal Resource Identifier (URI);

determining whether the specified URI corresponds to any cached media resources stored in a cache memory of the telephony platform, each cached media resource being a copy of a previously requested media item formatted into a compatible format for telephony sessions facilitated by the telephony platform;

in response to determining that the specified URI does not correspond to any of the cached media resources stored in the cache memory of the telephony platform, transmitting a request for the first media item to a media server identified by the specified URI;

in response to receiving the first media item from the media server, converting the first media item into the compatible format and storing a copy of the first media item converted into the compatible format in the cache memory of the telephony platform, yielding a first cached media resource, the first cached media resource being associated with the specified URI; and

forwarding the first media item converted into the compatible format to a call router to provide the first media item in relation to the first the telephony session.

2. The method of claim 1, further comprising:

receiving a second media request to access the first media item in relation to a second telephony session, the second media request including the specified URI;

determining whether the specified URI corresponds to any cached media resources stored in the cache memory of the telephony platform;

determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform; and

forwarding the first cached media resource to the call router to provide the first media item in relation to the second telephony session.

3. The method of claim 2, further comprising:

in response to determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform, determining whether the first cached media resource is valid, the first cached media resource being forwarded to the call router in response to determining that the first cached media resource is valid.

4. The method of claim 3, wherein determining whether the first cached media resource is valid comprises:

determining an amount of time that has elapsed after the first cached media resource was stored in the cache memory of the telephony platform; and

comparing the amount of time to a threshold amount of time.

5. The method of claim 1, further comprising:

receiving a second media request to access the first media item in relation to a second telephony session, the second media request including the specified URI;

determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform; and

determining that the first cached media resource is not valid;

in response to determining that the first cached media resource is not valid, transmitting a subsequent request for the first media item to the media server identified by the specified URI;

converting the first media item into the compatible format and storing an updated copy of the first media item converted into the compatible format in the cache memory of the telephony platform, yielding an updated first cached media resource, the updated first cached media resource being associated with the specified URI; and

forwarding the first media item converted into the compatible format to a call router to provide the first media item in relation to the second the telephony session.

6. The method of claim 5, further comprising:

receiving a third media request to access the first media item in relation to a third telephony session, the third media request including the specified URI;

determining whether the specified URI corresponds to any cached media resources stored in the cache memory of the telephony platform;

determining that the specified URI corresponds to the updated first cached media resource in the cache memory of the telephony platform; and

forwarding the updated first cached media resource to the call router to provide the first media item in relation to the third telephony session.

7. The method of claim 6, further comprising:

in response to determining that the specified URI corresponds to the updated first cached media resource in the cache memory of the telephony platform, determining whether the updated first cached media resource is valid, the updated first cached media resource being forwarded to the call router in response to determining that the updated first cached media resource is valid.

8. A telephony platform comprising:

one or more computer processors; and

one or more computer-readable mediums storing instructions that, when executed by the one or more computer processors, cause the telephony platform to perform operations comprising;

receiving a first media request to access a first media item in relation to a first telephony session, the first media request initiated by a first application utilizing telephony services provided by the telephony platform, the first media request including a specified Universal Resource Identifier (URI);

determining whether the specified URI corresponds to any cached media resources stored in a cache memory of the telephony platform, each cached media resource being a copy of a previously requested media item formatted into a compatible format for telephony sessions facilitated by the telephony platform;

in response to determining that the specified URI does not correspond to any of the cached media resources stored in the cache memory of the telephony platform, transmitting a request for the first media item to a media server identified by the specified URI;

in response to receiving the first media item from the media server, converting the first media item into the compatible format and storing a copy of the first media item converted into the compatible format in the cache memory of the telephony platform, yielding a first cached media resource, the first cached media resource being associated with the specified URI; and

forwarding the first media item converted into the compatible format to a call router to provide the first media item in relation to the first the telephony session.

9. The telephony platform of claim 8, the operations further comprising:

receiving a second media request to access the first media item in relation to a second telephony session, the second media request including the specified URI;

determining whether the specified URI corresponds to any cached media resources stored in the cache memory of the telephony platform;

determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform; and

forwarding the first cached media resource to the call router to provide the first media item in relation to the second telephony session.

10. The telephony platform of claim 9, the operations further comprising:

in response to determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform, determining whether the first cached media resource is valid, the first cached media resource being forwarded to the call router in response to determining that the first cached media resource is valid.

11. The telephony platform of claim 10, wherein determining whether the first cached media resource is valid comprises:

determining an amount of time that has elapsed after the first cached media resource was stored in the cache memory of the telephony platform; and

comparing the amount of time to a threshold amount of time.

12. The telephony platform of claim 8, the operations further comprising:

receiving a second media request to access the first media item in relation to a second telephony session, the second media request including the specified URI;

determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform; and

determining that the first cached media resource is not valid;

in response to determining that the first cached media resource is not valid, transmitting a subsequent request for the first media item to the media server identified by the specified URI;

converting the first media item into the compatible format and storing an updated copy of the first media item converted into the compatible format in the cache memory of the telephony platform, yielding an updated first cached media resource, the updated first cached media resource being associated with the specified URI; and

forwarding the first media item converted into the compatible format to a call router to provide the first media item in relation to the second the telephony session.

13. The telephony platform of claim 12, the operations further comprising:

receiving a third media request to access the first media item in relation to a third telephony session, the third media request including the specified URI;

determining whether the specified URI corresponds to any cached media resources stored in the cache memory of the telephony platform;

determining that the specified URI corresponds to the updated first cached media resource in the cache memory of the telephony platform; and

forwarding the updated first cached media resource to the call router to provide the first media item in relation to the third telephony session.

14. The telephony platform of claim 13, the operations further comprising:

in response to determining that the specified URI corresponds to the updated first cached media resource in the cache memory of the telephony platform, determining whether the updated first cached media resource is valid, the updated first cached media resource being forwarded to the call router in response to determining that the updated first cached media resource is valid.

15. A non-transitory computer-readable medium storing instructions that, when executed by one or more computer processors of a telephony platform, cause the telephony platform to perform operations comprising:

receiving a first media request to access a first media item in relation to a first telephony session, the first media request initiated by a first application utilizing telephony services provided by the telephony platform, the first media request including a specified Universal Resource Identifier (URI);

determining whether the specified URI corresponds to any cached media resources stored in a cache memory of the telephony platform, each cached media resource being a copy of a previously requested media item formatted into a compatible format for telephony sessions facilitated by the telephony platform;

in response to determining that the specified URI does not correspond to any of the cached media resources stored in the cache memory of the telephony platform, transmitting a request for the first media item to a media server identified by the specified URI;

in response to receiving the first media item from the media server, converting the first media item into the compatible format and storing a copy of the first media item converted into the compatible format in the cache memory of the telephony platform, yielding a first cached media resource, the first cached media resource being associated with the specified URI; and

forwarding the first media item converted into the compatible format to a call router to provide the first media item in relation to the first the telephony session.

16. The non-transitory computer-readable medium of claim 15, the operations further comprising:

receiving a second media request to access the first media item in relation to a second telephony session, the second media request including the specified URI;

determining whether the specified URI corresponds to any cached media resources stored in the cache memory of the telephony platform;

determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform; and

forwarding the first cached media resource to the call router to provide the first media item in relation to the second telephony session.

17. The non-transitory computer-readable medium of claim 16, the operations further comprising:

in response to determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform, determining whether the first cached media resource is valid, the first cached media resource being forwarded to the call router in response to determining that the first cached media resource is valid.

18. The non-transitory computer-readable medium of claim 17, wherein determining whether the first cached media resource is valid comprises:

determining an amount of time that has elapsed after the first cached media resource was stored in the cache memory of the telephony platform; and

comparing the amount of time to a threshold amount of time.

19. The non-transitory computer-readable medium of claim 15, the operations further comprising:

receiving a second media request to access the first media item in relation to a second telephony session, the second media request including the specified URI;

determining that the specified URI corresponds to the first cached media resource in the cache memory of the telephony platform; and

determining that the first cached media resource is not valid;

in response to determining that the first cached media resource is not valid, transmitting a subsequent request for the first media item to the media server identified by the specified URI;

converting the first media item into the compatible format and storing an updated copy of the first media item converted into the compatible format in the cache memory of the telephony platform, yielding an updated first cached media resource, the updated first cached media resource being associated with the specified URI; and

forwarding the first media item converted into the compatible format to a call router to provide the first media item in relation to the second the telephony session.

20. The non-transitory computer-readable medium of claim 19, the operations further comprising:

receiving a third media request to access the first media item in relation to a third telephony session, the third media request including the specified URI;

determining whether the specified URI corresponds to any cached media resources stored in the cache memory of the telephony platform;

determining that the specified URI corresponds to the updated first cached media resource in the cache memory of the telephony platform; and

forwarding the updated first cached media resource to the call router to provide the first media item in relation to the third telephony session.