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Manage HTTP/2 connections and keep them alive with PING frames (#673)
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| // Copyright 2021-2023 Buf Technologies, Inc. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| import { Code, ConnectError } from "@bufbuild/connect"; | ||
| import { | ||
| createConnectTransport, | ||
| Http2SessionManager, | ||
| } from "@bufbuild/connect-node"; | ||
|
|
||
| describe("createConnectTransport()", function () { | ||
| it("should take just httpVersion and baseUrl", function () { | ||
| const t = createConnectTransport({ | ||
| httpVersion: "2", | ||
| baseUrl: "https://example.com", | ||
| }); | ||
| expect(t).toBeDefined(); | ||
| }); | ||
| it("should take session options", function () { | ||
| const t = createConnectTransport({ | ||
| httpVersion: "2", | ||
| baseUrl: "https://example.com", | ||
| pingIntervalMs: 1000 * 30, | ||
| pingIdleConnection: true, | ||
| pingTimeoutMs: 1000 * 5, | ||
| idleConnectionTimeoutMs: 1000 * 60 * 5, | ||
| }); | ||
| expect(t).toBeDefined(); | ||
| }); | ||
| it("should take node options", function () { | ||
| const t = createConnectTransport({ | ||
| httpVersion: "2", | ||
| baseUrl: "https://example.com", | ||
| nodeOptions: { | ||
| maxSessionMemory: 1024 * 1024 * 4, | ||
| }, | ||
| }); | ||
| expect(t).toBeDefined(); | ||
| }); | ||
| it("should take session manager", function () { | ||
| const sm = new Http2SessionManager( | ||
| "https://example.com", | ||
| { | ||
| pingIntervalMs: 1000 * 10, | ||
| }, | ||
| { | ||
| maxSessionMemory: 1024 * 1024 * 4, | ||
| } | ||
| ); | ||
| const t = createConnectTransport({ | ||
| httpVersion: "2", | ||
| baseUrl: "https://example.com", | ||
| sessionManager: sm, | ||
| }); | ||
| expect(t).toBeDefined(); | ||
| }); | ||
| }); | ||
|
|
||
| describe("using a session manager to open a connection before starting an application", function () { | ||
| it("should work", async function () { | ||
| const sm = new Http2SessionManager("https://demo.connect.build"); | ||
| for (let backoff = 1; ; backoff++) { | ||
| const state = await sm.connect(); | ||
| if (state == "error") { | ||
| // For a transient error, we can retry here | ||
| const reason = sm.error(); | ||
| if (ConnectError.from(reason).code !== Code.Unavailable) { | ||
| throw sm.error(); | ||
| } | ||
| await new Promise<void>((resolve) => | ||
| setTimeout(resolve, backoff * 1000) | ||
| ); | ||
| } else { | ||
| // we are connected (either open or idle), break the loop | ||
| break; | ||
| } | ||
| } | ||
| // here we would enter the application logic, and start calling RPCs | ||
| }); | ||
| }); | ||
|
|
||
| describe("using a session manager to explicitly close all connections", function () { | ||
| it("should work", function () { | ||
| // create a client, keeping a reference to the session manage | ||
| const sessionManager = new Http2SessionManager( | ||
| "https://demo.connect.build" | ||
| ); | ||
| createConnectTransport({ | ||
| httpVersion: "2", | ||
| baseUrl: "https://demo.connect.build", | ||
| sessionManager, | ||
| }); | ||
| // const client = createPromiseClient(..., transport); | ||
|
|
||
| // make calls with the client | ||
|
|
||
| // close the connection | ||
| sessionManager.abort(); | ||
| }); | ||
| }); |
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