HeadlessAPI connects to Headless (us-east-1) REST endpoints to make sure 1) credentials work 2) api is reachable 3) api retrieves the expected data if 1 & 2 are true.

HeadlessServices sends HTTP requests to Headless Sauce endpoints to prove tests could theoretically be created and the data centers are reachable.

PublicSites attempts to prove that the machine has internet connectivity and is not being blocked by a private network.

RDCServices makes connections to the main RDC endpoints to prove that the endpoints are reachable from the machine.

TCPConns attempts to open various TCP connections to the provided sites This proves that with or without a proxy the TCP connections can be created.

VdcAPI connects to VDC REST endpoints to make sure 1) credentials work 2) api is reachable 3) api retrieves the expected data if 1 & 2 are true.

VDCServices sends HTTP requests to Sauce endpoints to prove tests could theoretically be created and the data centers are reachable.