The protocol this BackendService uses to communicate with backends. Possible values are HTTP, HTTPS, HTTP2, TCP, SSL, UDP or GRPC. depending on the chosen load balancer or Traffic Director configuration. Refer to the documentation for the load balancers or for Traffic Director for more information. Must be set to GRPC when the backend service is referenced by a URL map that is bound to target gRPC proxy.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eThe latest version available for \u003ccode\u003eGoogle.Cloud.Compute.V1.BackendService.Types.Protocol\u003c/code\u003e is 3.6.0, with numerous previous versions listed, including down to version 1.0.0.\u003c/p\u003e\n"],["\u003cp\u003eThis documentation outlines the \u003ccode\u003eProtocol\u003c/code\u003e enum, specifying the communication protocols a BackendService uses with its backends, such as HTTP, HTTPS, HTTP2, TCP, SSL, UDP, or GRPC.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eProtocol\u003c/code\u003e enum also contains fields that are described, like \u003ccode\u003eGrpc\u003c/code\u003e, \u003ccode\u003eHttp\u003c/code\u003e, \u003ccode\u003eHttp2\u003c/code\u003e, \u003ccode\u003eHttps\u003c/code\u003e, \u003ccode\u003eSsl\u003c/code\u003e, \u003ccode\u003eTcp\u003c/code\u003e, \u003ccode\u003eUdp\u003c/code\u003e, \u003ccode\u003eUndefinedProtocol\u003c/code\u003e, and \u003ccode\u003eUnspecified\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUnspecified\u003c/code\u003e field in the protocol enum, when set as the protocol of a Backend Service, enables it to work with any L3/L4 Forwarding Rules.\u003c/p\u003e\n"]]],[],null,[]]
