Per-provider origin pull

A computing apparatus comprising:

• one or more computer readable storage media;
• a processing system operatively coupled with the one or more computer readable storage media;
• and
• program instructions stored on the one or more computer readable storage media for operating an infrastructure service that, when executed by the processing system, direct the computing apparatus to at least:
• receive a request from an end point for content associated with an origin;
• send a connection request to the origin from an initial network address;
• in response to a failure of the origin to respond to the connection request, send connection requests to the origin from different network addresses;
• receive one or more replies to the connection requests;
• identify which reply of the one or more replies was received first and a network address to which the reply was sent;
• and
• establish a connection with the origin using the network address.

A method of operating an infrastructure service comprising:

• receiving a request from an end point for content associated with an origin;
• sending a connection request to the origin from an initial network address included within a range of network addresses announced to transit networks that carry traffic between the infrastructure service and the origin;
• detecting a failure of the origin to respond to the connection request;
• in response to the failure, sending connection requests to the origin from different network addresses included within sub-ranges, of the range of network addresses, announced to the transit networks;
• receiving one or more replies to the connection requests;
• identifying which reply of the one or more replies was received first and a network address to which the reply was sent;
• establishing a connection with the origin using the network address;
• and
• obtaining the content from the origin over the connection.