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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28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 of the \u003ccode\u003eGoogle.Cloud.Compute.V1.BackendService.Types.Protocol\u003c/code\u003e is 3.6.0, with a range of available versions from 1.0.0 up to this latest release.\u003c/p\u003e\n"],["\u003cp\u003eThis documentation outlines the \u003ccode\u003eProtocol\u003c/code\u003e enum, which defines the communication protocols that can be used by a \u003ccode\u003eBackendService\u003c/code\u003e, and is located under version 2.0.0 of the namespace \u003ccode\u003eGoogle.Cloud.Compute.V1\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eProtocol\u003c/code\u003e enum supports a variety of communication protocols such as \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, and \u003ccode\u003eUdp\u003c/code\u003e, each serving different networking purposes.\u003c/p\u003e\n"],["\u003cp\u003eThere are specific use cases such as when a backend service has \u003ccode\u003eUnspecified\u003c/code\u003e protocol, it can be used with any L3/L4 Forwarding Rules or when the protocol is \u003ccode\u003eGRPC\u003c/code\u003e when the backend service is referenced by a URL map bound to target gRPC proxy.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUndefinedProtocol\u003c/code\u003e enum field indicates when the protocol is not set.\u003c/p\u003e\n"]]],[],null,[]]
