Serving an Online Advertisement Asynchronously

A method in a client device executing a client network application, comprising:

• transmitting a request for a network resource, wherein the request includes one or more cookies;
• receiving, from a server in response to the transmitted request, a push promise message for a client-side script;
• receiving, from the server, a modified version of the network resource, wherein the modified version of the network resource includes a reference to the client-side script that is configured to, when executed by the client network application, inject an online advertisement into the modified version of the network resource;
• receiving, from the server, the client-side script without the client network application transmitting a separate request for the client-side script;
• and
• executing the client-side script including injecting an online advertisement into the modified version of the network resource.

A non-transitory machine-readable storage medium that provides instructions that, when executed by a processor of a server, is capable of causing the processor to perform operations comprising:

• receiving, from a client network application, a request for a network resource;
• retrieving the network resource;
• detecting an online advertisement tag in the network resource;
• determining that the server has access to an identity cookie for the requesting client network application;
• modifying the network resource including:
• causing the detected online advertisement tag from being processed directly by the client network application, and
• adding a reference to a client-side script that is configured to, when executed by the client network application, inject an online advertisement into the modified network resource;
• transmitting a request for the online advertisement to an advertisement supply source;
• transmitting a push-promise to the requesting client network application for the client-side script;
• transmitting the modified network resource to the requesting client network application;
• receiving, from the advertisement supply source, a response to the request for the online advertisement;
• and
• transmitting the client-side script to the requesting client network application without receiving a separate request for the client-side script from the requesting client network application.

A non-transitory machine-readable storage medium that provides instructions that, when executed by a processor of a client device executing a client network application, is capable of causing the processor to perform operations comprising:

• transmitting a request for a network resource, wherein the request includes one or more cookies;
• receiving, from a server in response to the transmitted request, a push promise message for a client-side script;
• receiving, from the server, a modified version of the network resource, wherein the modified version of the network resource includes a reference to the client-side script that is configured to, when executed by the client network application, inject an online advertisement into the modified version of the network resource;
• receiving, from the server, the client-side script without the client network application transmitting a separate request for the client-side script;
• and
• executing the client-side script including injecting an online advertisement into the modified version of the network resource.