Load balancer bypass

A source intermediary computer system, comprising:

• one or more hardware processors;
• and
• one or more hardware storage devices having stored thereon computer-executable instructions that are structured such that, when executed by the one or more processors of the source intermediary computer system, the computer-executable instructions configure the source intermediary computer system to cooperate in bypassing a load balancer, including configuring the source intermediary computer system to perform at least the following:
• receive a source-side message from a source machine, the source-side message having a virtual network address of a load balancer as a destination address, and having a routable device identifier of the source machine as a source address;
• send the source-side message to a load balancer serving a destination intermediary computer system;
• based on sending the source-side message to the load balancer, receive an augmented response from the destination intermediary computer system, the augmented response including a response from a destination machine served by the destination intermediary computer system, the augmented response having the routable device identifier of the source machine as its destination, and having the virtual network address of the load balancer as its source;
• extract the response from the augmented response;
• identify a routable device identifier of the destination machine from the response;
• modify the response so that a source address of the response includes the virtual network address of the load balancer;
• dispatch the modified response to the source machine;
• and
• redirect one or more subsequent messages received from the source machine to the destination machine, using the identified routable device identifier of the destination machine, to bypass the load balancer.

A method, implemented at a destination intermediary computer system that includes one or more processors, for redirecting a multi-message flow so as to bypass a load balancer, the method comprising:

• receiving a source-side message from a load balancer, the source-side message including a virtual network address of the load balancer as a destination and having been received by the load balancer from a source intermediary serving a source machine, the source-side message having been augmented by the load balancer to include a network address of a destination machine that is served by the destination intermediary as a destination for the source-side message;
• determining that the source intermediary is to address subsequent network messages that originate from the source machine and that are associated with the same multi-message flow to the destination machine in a manner that bypasses the load balancer;
• and
• based on the determination:
• modifying the source-side message such that the destination for the source-side message addresses the source machine;
• passing the modified source-side message to the destination machine;
• receiving a response from the destination machine identifying the source machine as its destination;
• modifying the response so that a source address of the response identifies the virtual network address of the load balancer;
• and
• dispatching the modified response to the source machine.