Methods and systems for handling requests regarding zero-rating
Methods and systems for processing requests by a computing device (e.g., a user device) are disclosed. The user device is coupled to a server system (e.g., a proxy server). The user device detects a DNS lookup request including a domain name and generates a first response to the DNS lookup request. The first response includes a synthesized IP address associated at the computing device with the domain name. The user device detects a connection request subsequent to the first response. The connection request includes the synthesized IP address. The user device modifies the connection request. In some embodiments, the user device replaces the synthesized IP address in the connection request with the domain name. The user device further forwards the connection request to a server.
1. A method, comprising:
at a network service application on a computing device having one or more processors, one or more applications, and memory storing instructions for execution by the one or more processors:
intercepting, from an application on the computing device distinct from the network service application, a DNS lookup request including a domain name;
generating a first response to the DNS lookup request, the first response including a synthesized IP address associated, at the computing device, with the domain name;
storing the first response in the memory;
sending the first response to the application;
detecting a connection request from the application subsequent to sending the first response, the connection request including an IP address;
comparing the IP address to the synthesized IP address stored in the memory; and
in accordance with a determination that the IP address matches the synthesized IP address:
modifying the connection request by replacing the synthesized IP address in the connection request with the domain name; and
forwarding the modified connection request to a proxy server to determine whether the domain name included in the connection request is zero-rated.
2. The method of claim 1 , further comprising, at the computing device, checking an application ID included in the DNS lookup request to identify that the DNS lookup request is generated by the first application.
3. The method of claim 1 , wherein:
the first response is generated by a second application running on the computing device, the second application being distinct from the first application; and
the method further comprises sending the first response from the second application to the first application.
4. The method of claim 3 , wherein the second application provides access to zero-rated web services.
5. The method of claim 3 further comprising:
generating, by the second application, the synthesized IP address.
6. The method of claim 5 , wherein the synthesized IP address is generated randomly at the computing device.
7. The method of claim 1 , wherein:
the DNS lookup request is a first request of a plurality of DNS lookup requests including respective domain names;
the method further comprises, at the computing device, responding to the plurality of DNS lookup requests with responses including respective synthesized IP addresses associated at the computing device with the respective domain names; and
within the computing device, each synthesized IP address is unique to a respective domain name.
8. The method of claim 7 , wherein the connection request is a first connection request, the method further comprising:
detecting a second connection request including an IP address that is not one of the synthesized IP addresses; and
in accordance with a determination that the second connection request does not include one of the synthesized IP addresses, dropping the second connection request.
9. The method of claim 1 , further comprising:
generating a first packet corresponding to the first request, wherein the first packet is a UDP DNS packet; and
generating a second packet corresponding to the connection request, wherein the second packet is a TCP packet.
10. A non-transitory computer-readable storage medium storing one or more programs configured for execution by one or more processors of a computing device, the one or more programs including instructions for:
intercepting, by a network service application, a DNS lookup request including a domain name, from an application distinct from the network service application;
generating a first response to the DNS lookup request, the first response including a synthesized IP address associated, at the computing device, with the domain name;
storing the first response in memory of the computing device;
sending the first response to the application;
detecting a connection request from the application subsequent to sending the first response, the connection request including an IP address;
comparing the IP address to the synthesized IP address stored in the memory; and
in accordance with a determination that the IP address matches the synthesized IP address:
modifying the connection request by replacing the synthesized IP address in the connection request with the domain name; and
forwarding the modified connection request to a proxy server to determine whether the domain name included in the connection request is zero-rated.