7 files changed, 146 insertions, 47 deletions

diff --git a/editors/code/README.md b/editors/code/README.md
index 336695d9f..241489226 100644
--- a/editors/code/README.md
+++ b/editors/code/README.md
@@ -2,4 +2,72 @@
 
 Provides support for rust-analyzer: novel LSP server for the Rust programming language.
 
-See https://rust-analyzer.github.io/ for more information.
+**Note** the extension may cause conflicts with the official Rust extension. It is recommended to disable the Rust extension when using the rust-analyzer extension.
+
+**Note** the project is in alpha status: it is already useful in practice, but can't be considered stable.
+
+## Sponsor
+
+Work on rust-analyzer is sponsored by
+
+[<img src="https://user-images.githubusercontent.com/1711539/58105231-cf306900-7bee-11e9-83d8-9f1102e59d29.png" alt="Ferrous Systems" width="300">](https://ferrous-systems.com/)
+
+- [Mozilla](https://www.mozilla.org/en-US/)
+- [Embark Studios](https://embark-studios.com/)
+- [freiheit.com](https://www.freiheit.com)
+
+If you want to sponsor:
+
+- [OpenCollective](https://opencollective.com/rust-analyzer/)
+- [Github Sponsors](https://github.com/sponsors/rust-analyzer)
+
+## Features
+
+- [code completion], [imports insertion]
+- [go to definition], [implementation], [type definition]
+- [find all references], [workspace symbol search], [rename]
+- [types and documentation on hover]
+- [inlay hints]
+- [semantic syntax highlighting]
+- a lot of [assist(code actions)]
+- apply suggestions from errors
+- ... and many more, checkout the [manual] to see them all
+
+[code completion]: https://rust-analyzer.github.io/manual.html#magic-completions
+[imports insertion]: https://rust-analyzer.github.io/manual.html#auto-import
+[go to definition]: https://rust-analyzer.github.io/manual.html#go-to-definition
+[implementation]: https://rust-analyzer.github.io/manual.html#go-to-implementation
+[type definition]: https://rust-analyzer.github.io/manual.html#go-to-type-definition
+[find all references]: https://rust-analyzer.github.io/manual.html#find-all-references
+[workspace symbol search]: https://rust-analyzer.github.io/manual.html#workspace-symbol
+[rename]: https://rust-analyzer.github.io/manual.html#rename
+[types and documentation on hover]: https://rust-analyzer.github.io/manual.html#hover
+[inlay hints]: https://rust-analyzer.github.io/manual.html#inlay-hints
+[semantic syntax highlighting]: https://rust-analyzer.github.io/manual.html#semantic-syntax-highlighting
+[assist(code actions)]: https://rust-analyzer.github.io/manual.html#assists-code-actions
+
+[manual]: https://rust-analyzer.github.io/manual.html
+
+## Quick start
+
+1. Install [rustup]
+2. Install the [rust-analyzer extension]
+
+[rustup]: https://rustup.rs
+[rust-analyzer extension]: https://marketplace.visualstudio.com/items?itemName=matklad.rust-analyzer
+
+## Configuration
+
+This extension provides configurations through VSCode's configuration settings. All the configurations are under `rust-analyzer.*`.
+
+See <https://rust-analyzer.github.io/manual.html#vs-code-2> for more information on VSCode specific configurations.
+
+## Communication
+
+For usage and troubleshooting requests, please use "IDEs and Editors" category of the Rust forum:
+
+<https://users.rust-lang.org/c/ide/14>
+
+## Documentation
+
+See <https://rust-analyzer.github.io/> for more information.
diff --git a/editors/code/package-lock.json b/editors/code/package-lock.json
index 9d0d1d4ec..198c17556 100644
--- a/editors/code/package-lock.json
+++ b/editors/code/package-lock.json
@@ -9,6 +9,7 @@
             "version": "0.4.0-dev",
             "license": "MIT OR Apache-2.0",
             "dependencies": {
+                "https-proxy-agent": "^5.0.0",
                 "node-fetch": "^2.6.1",
                 "vscode-languageclient": "^7.1.0-next.4"
             },
@@ -515,7 +516,6 @@
             "version": "6.0.2",
             "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
             "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
-            "dev": true,
             "dependencies": {
                 "debug": "4"
             },
@@ -830,6 +830,7 @@
             "dependencies": {
                 "anymatch": "~3.1.1",
                 "braces": "~3.0.2",
+                "fsevents": "~2.3.1",
                 "glob-parent": "~5.1.0",
                 "is-binary-path": "~2.1.0",
                 "is-glob": "~4.0.1",
@@ -959,7 +960,6 @@
             "version": "4.3.1",
             "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
             "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
-            "dev": true,
             "dependencies": {
                 "ms": "2.1.2"
             },
@@ -1759,7 +1759,6 @@
             "version": "5.0.0",
             "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.0.tgz",
             "integrity": "sha512-EkYm5BcKUGiduxzSt3Eppko+PiNWNEpa4ySk9vTC6wDsQJW9rHSa+UhGNJoRYp7bz6Ht1eaRIa6QaJqO5rCFbA==",
-            "dev": true,
             "dependencies": {
                 "agent-base": "6",
                 "debug": "4"
@@ -2236,8 +2235,7 @@
         "node_modules/ms": {
             "version": "2.1.2",
             "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-            "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-            "dev": true
+            "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         },
         "node_modules/mute-stream": {
             "version": "0.0.8",
@@ -2682,6 +2680,9 @@
             "resolved": "https://registry.npmjs.org/rollup/-/rollup-2.39.1.tgz",
             "integrity": "sha512-9rfr0Z6j+vE+eayfNVFr1KZ+k+jiUl2+0e4quZafy1x6SFCjzFspfRSO2ZZQeWeX9noeDTUDgg6eCENiEPFvQg==",
             "dev": true,
+            "dependencies": {
+                "fsevents": "~2.3.1"
+            },
             "bin": {
                 "rollup": "dist/bin/rollup"
             },
@@ -3843,7 +3844,6 @@
             "version": "6.0.2",
             "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-6.0.2.tgz",
             "integrity": "sha512-RZNwNclF7+MS/8bDg70amg32dyeZGZxiDuQmZxKLAlQjr3jGyLx+4Kkk58UO7D2QdgFIQCovuSuZESne6RG6XQ==",
-            "dev": true,
             "requires": {
                 "debug": "4"
             }
@@ -4190,7 +4190,6 @@
             "version": "4.3.1",
             "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.1.tgz",
             "integrity": "sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==",
-            "dev": true,
             "requires": {
                 "ms": "2.1.2"
             }
@@ -4798,7 +4797,6 @@
             "version": "5.0.0",
             "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-5.0.0.tgz",
             "integrity": "sha512-EkYm5BcKUGiduxzSt3Eppko+PiNWNEpa4ySk9vTC6wDsQJW9rHSa+UhGNJoRYp7bz6Ht1eaRIa6QaJqO5rCFbA==",
-            "dev": true,
             "requires": {
                 "agent-base": "6",
                 "debug": "4"
@@ -5175,8 +5173,7 @@
         "ms": {
             "version": "2.1.2",
             "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-            "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
-            "dev": true
+            "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
         },
         "mute-stream": {
             "version": "0.0.8",
diff --git a/editors/code/package.json b/editors/code/package.json
index 7ee5d82ad..923e9b35a 100644
--- a/editors/code/package.json
+++ b/editors/code/package.json
@@ -35,6 +35,7 @@
         "test": "node ./out/tests/runTests.js"
     },
     "dependencies": {
+        "https-proxy-agent": "^5.0.0",
         "node-fetch": "^2.6.1",
         "vscode-languageclient": "^7.1.0-next.4"
     },
@@ -390,13 +391,18 @@
                         "Force import paths to be absolute by always starting them with `crate` or the crate name they refer to."
                     ]
                 },
+                "rust-analyzer.assist.importGroup": {
+                    "markdownDescription": "Group inserted imports by the [following order](https://rust-analyzer.github.io/manual.html#auto-import). Groups are separated by newlines.",
+                    "default": true,
+                    "type": "boolean"
+                },
                 "rust-analyzer.callInfo.full": {
                     "markdownDescription": "Show function name and docs in parameter hints.",
                     "default": true,
                     "type": "boolean"
                 },
                 "rust-analyzer.cargo.autoreload": {
-                    "markdownDescription": "Automatically refresh project info via `cargo metadata` on `Cargo.toml` changes.",
+                    "markdownDescription": "Automatically refresh project info via `cargo metadata` on\n`Cargo.toml` changes.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -413,9 +419,9 @@
                         "type": "string"
                     }
                 },
-                "rust-analyzer.cargo.loadOutDirsFromCheck": {
-                    "markdownDescription": "Run `cargo check` on startup to get the correct value for package OUT_DIRs.",
-                    "default": false,
+                "rust-analyzer.cargo.runBuildScripts": {
+                    "markdownDescription": "Run build scripts (`build.rs`) for more precise code analysis.",
+                    "default": true,
                     "type": "boolean"
                 },
                 "rust-analyzer.cargo.noDefaultFeatures": {
@@ -442,7 +448,7 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.checkOnSave.allFeatures": {
-                    "markdownDescription": "Check with all features (`--all-features`). Defaults to `#rust-analyzer.cargo.allFeatures#`.",
+                    "markdownDescription": "Check with all features (`--all-features`).\nDefaults to `#rust-analyzer.cargo.allFeatures#`.",
                     "default": null,
                     "type": [
                         "null",
@@ -468,7 +474,7 @@
                     ]
                 },
                 "rust-analyzer.checkOnSave.target": {
-                    "markdownDescription": "Check for a specific target. Defaults to `#rust-analyzer.cargo.target#`.",
+                    "markdownDescription": "Check for a specific target. Defaults to\n`#rust-analyzer.cargo.target#`.",
                     "default": null,
                     "type": [
                         "null",
@@ -484,7 +490,7 @@
                     }
                 },
                 "rust-analyzer.checkOnSave.features": {
-                    "markdownDescription": "List of features to activate. Defaults to `#rust-analyzer.cargo.features#`.",
+                    "markdownDescription": "List of features to activate. Defaults to\n`#rust-analyzer.cargo.features#`.",
                     "default": null,
                     "type": [
                         "null",
@@ -495,7 +501,7 @@
                     }
                 },
                 "rust-analyzer.checkOnSave.overrideCommand": {
-                    "markdownDescription": "Advanced option, fully override the command rust-analyzer uses for checking. The command should include `--message-format=json` or similar option.",
+                    "markdownDescription": "Advanced option, fully override the command rust-analyzer uses for\nchecking. The command should include `--message-format=json` or\nsimilar option.",
                     "default": null,
                     "type": [
                         "null",
@@ -521,7 +527,7 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.completion.autoimport.enable": {
-                    "markdownDescription": "Toggles the additional completions that automatically add imports when completed. Note that your client must specify the `additionalTextEdits` LSP client capability to truly have this feature enabled.",
+                    "markdownDescription": "Toggles the additional completions that automatically add imports when completed.\nNote that your client must specify the `additionalTextEdits` LSP client capability to truly have this feature enabled.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -531,7 +537,7 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.diagnostics.enableExperimental": {
-                    "markdownDescription": "Whether to show experimental rust-analyzer diagnostics that might have more false positives than usual.",
+                    "markdownDescription": "Whether to show experimental rust-analyzer diagnostics that might\nhave more false positives than usual.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -545,7 +551,7 @@
                     "uniqueItems": true
                 },
                 "rust-analyzer.diagnostics.warningsAsHint": {
-                    "markdownDescription": "List of warnings that should be displayed with info severity.\\n\\nThe warnings will be indicated by a blue squiggly underline in code and a blue icon in the `Problems Panel`.",
+                    "markdownDescription": "List of warnings that should be displayed with info severity.\n\nThe warnings will be indicated by a blue squiggly underline in code\nand a blue icon in the `Problems Panel`.",
                     "default": [],
                     "type": "array",
                     "items": {
@@ -553,7 +559,7 @@
                     }
                 },
                 "rust-analyzer.diagnostics.warningsAsInfo": {
-                    "markdownDescription": "List of warnings that should be displayed with hint severity.\\n\\nThe warnings will be indicated by faded text or three dots in code and will not show up in the `Problems Panel`.",
+                    "markdownDescription": "List of warnings that should be displayed with hint severity.\n\nThe warnings will be indicated by faded text or three dots in code\nand will not show up in the `Problems Panel`.",
                     "default": [],
                     "type": "array",
                     "items": {
@@ -574,7 +580,7 @@
                     }
                 },
                 "rust-analyzer.hoverActions.debug": {
-                    "markdownDescription": "Whether to show `Debug` action. Only applies when `#rust-analyzer.hoverActions.enable#` is set.",
+                    "markdownDescription": "Whether to show `Debug` action. Only applies when\n`#rust-analyzer.hoverActions.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -584,17 +590,17 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.hoverActions.gotoTypeDef": {
-                    "markdownDescription": "Whether to show `Go to Type Definition` action. Only applies when `#rust-analyzer.hoverActions.enable#` is set.",
+                    "markdownDescription": "Whether to show `Go to Type Definition` action. Only applies when\n`#rust-analyzer.hoverActions.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
                 "rust-analyzer.hoverActions.implementations": {
-                    "markdownDescription": "Whether to show `Implementations` action. Only applies when `#rust-analyzer.hoverActions.enable#` is set.",
+                    "markdownDescription": "Whether to show `Implementations` action. Only applies when\n`#rust-analyzer.hoverActions.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
                 "rust-analyzer.hoverActions.run": {
-                    "markdownDescription": "Whether to show `Run` action. Only applies when `#rust-analyzer.hoverActions.enable#` is set.",
+                    "markdownDescription": "Whether to show `Run` action. Only applies when\n`#rust-analyzer.hoverActions.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -618,7 +624,7 @@
                     "minimum": 0
                 },
                 "rust-analyzer.inlayHints.parameterHints": {
-                    "markdownDescription": "Whether to show function parameter name inlay hints at the call site.",
+                    "markdownDescription": "Whether to show function parameter name inlay hints at the call\nsite.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -628,7 +634,7 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.lens.debug": {
-                    "markdownDescription": "Whether to show `Debug` lens. Only applies when `#rust-analyzer.lens.enable#` is set.",
+                    "markdownDescription": "Whether to show `Debug` lens. Only applies when\n`#rust-analyzer.lens.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
@@ -638,27 +644,27 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.lens.implementations": {
-                    "markdownDescription": "Whether to show `Implementations` lens. Only applies when `#rust-analyzer.lens.enable#` is set.",
+                    "markdownDescription": "Whether to show `Implementations` lens. Only applies when\n`#rust-analyzer.lens.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
                 "rust-analyzer.lens.run": {
-                    "markdownDescription": "Whether to show `Run` lens. Only applies when `#rust-analyzer.lens.enable#` is set.",
+                    "markdownDescription": "Whether to show `Run` lens. Only applies when\n`#rust-analyzer.lens.enable#` is set.",
                     "default": true,
                     "type": "boolean"
                 },
                 "rust-analyzer.lens.methodReferences": {
-                    "markdownDescription": "Whether to show `Method References` lens. Only applies when `#rust-analyzer.lens.enable#` is set.",
+                    "markdownDescription": "Whether to show `Method References` lens. Only applies when\n`#rust-analyzer.lens.enable#` is set.",
                     "default": false,
                     "type": "boolean"
                 },
                 "rust-analyzer.lens.references": {
-                    "markdownDescription": "Whether to show `References` lens. Only applies when `#rust-analyzer.lens.enable#` is set.",
+                    "markdownDescription": "Whether to show `References` lens. Only applies when\n`#rust-analyzer.lens.enable#` is set.",
                     "default": false,
                     "type": "boolean"
                 },
                 "rust-analyzer.linkedProjects": {
-                    "markdownDescription": "Disable project auto-discovery in favor of explicitly specified set of projects.\\n\\nElements must be paths pointing to `Cargo.toml`, `rust-project.json`, or JSON objects in `rust-project.json` format.",
+                    "markdownDescription": "Disable project auto-discovery in favor of explicitly specified set\nof projects.\n\nElements must be paths pointing to `Cargo.toml`,\n`rust-project.json`, or JSON objects in `rust-project.json` format.",
                     "default": [],
                     "type": "array",
                     "items": {
@@ -683,12 +689,12 @@
                     "type": "boolean"
                 },
                 "rust-analyzer.procMacro.enable": {
-                    "markdownDescription": "Enable Proc macro support, `#rust-analyzer.cargo.loadOutDirsFromCheck#` must be enabled.",
+                    "markdownDescription": "Enable support for procedural macros, implies `#rust-analyzer.cargo.runBuildScripts#`.",
                     "default": false,
                     "type": "boolean"
                 },
                 "rust-analyzer.procMacro.server": {
-                    "markdownDescription": "Internal config, path to proc-macro server executable (typically, this is rust-analyzer itself, but we override this in tests).",
+                    "markdownDescription": "Internal config, path to proc-macro server executable (typically,\nthis is rust-analyzer itself, but we override this in tests).",
                     "default": null,
                     "type": [
                         "null",
@@ -704,7 +710,7 @@
                     ]
                 },
                 "rust-analyzer.runnables.cargoExtraArgs": {
-                    "markdownDescription": "Additional arguments to be passed to cargo for runnables such as tests or binaries.\\nFor example, it may be `--release`.",
+                    "markdownDescription": "Additional arguments to be passed to cargo for runnables such as\ntests or binaries. For example, it may be `--release`.",
                     "default": [],
                     "type": "array",
                     "items": {
@@ -712,7 +718,7 @@
                     }
                 },
                 "rust-analyzer.rustcSource": {
-                    "markdownDescription": "Path to the rust compiler sources, for usage in rustc_private projects, or \"discover\" to try to automatically find it.",
+                    "markdownDescription": "Path to the Cargo.toml of the rust compiler workspace, for usage in rustc_private\nprojects, or \"discover\" to try to automatically find it.\n\nAny project which uses rust-analyzer with the rustcPrivate\ncrates must set `[package.metadata.rust-analyzer] rustc_private=true` to use it.\n\nThis option is not reloaded automatically; you must restart rust-analyzer for it to take effect.",
                     "default": null,
                     "type": [
                         "null",
@@ -728,7 +734,7 @@
                     }
                 },
                 "rust-analyzer.rustfmt.overrideCommand": {
-                    "markdownDescription": "Advanced option, fully override the command rust-analyzer uses for formatting.",
+                    "markdownDescription": "Advanced option, fully override the command rust-analyzer uses for\nformatting.",
                     "default": null,
                     "type": [
                         "null",
diff --git a/editors/code/src/commands.ts b/editors/code/src/commands.ts
index d43db7307..694f445bc 100644
--- a/editors/code/src/commands.ts
+++ b/editors/code/src/commands.ts
@@ -254,11 +254,10 @@ export function ssr(ctx: Ctx): Cmd {
 export function serverVersion(ctx: Ctx): Cmd {
     return async () => {
         const { stdout } = spawnSync(ctx.serverPath, ["--version"], { encoding: "utf8" });
-        const commitHash = stdout.slice(`rust-analyzer `.length).trim();
-        const { releaseTag } = ctx.config.package;
+        const versionString = stdout.slice(`rust-analyzer `.length).trim();
 
         void vscode.window.showInformationMessage(
-            `rust-analyzer version: ${releaseTag ?? "unreleased"} (${commitHash})`
+            `rust-analyzer version: ${versionString}`
         );
     };
 }
diff --git a/editors/code/src/config.ts b/editors/code/src/config.ts
index ddb5cfbd3..82f0a0566 100644
--- a/editors/code/src/config.ts
+++ b/editors/code/src/config.ts
@@ -100,6 +100,14 @@ export class Config {
     get channel() { return this.get<UpdatesChannel>("updates.channel"); }
     get askBeforeDownload() { return this.get<boolean>("updates.askBeforeDownload"); }
     get traceExtension() { return this.get<boolean>("trace.extension"); }
+    get httpProxy() {
+        const httpProxy = vscode
+            .workspace
+            .getConfiguration('http')
+            .get<null | string>("proxy")!;
+
+        return httpProxy || process.env["https_proxy"] || process.env["HTTPS_PROXY"];
+    }
 
     get inlayHints() {
         return {
diff --git a/editors/code/src/main.ts b/editors/code/src/main.ts
index f1a2020aa..925103f56 100644
--- a/editors/code/src/main.ts
+++ b/editors/code/src/main.ts
@@ -184,7 +184,7 @@ async function bootstrapExtension(config: Config, state: PersistentState): Promi
     }
 
     const release = await downloadWithRetryDialog(state, async () => {
-        return await fetchRelease("nightly", state.githubToken);
+        return await fetchRelease("nightly", state.githubToken, config.httpProxy);
     }).catch(async (e) => {
         log.error(e);
         if (state.releaseId === undefined) { // Show error only for the initial download
@@ -210,6 +210,7 @@ async function bootstrapExtension(config: Config, state: PersistentState): Promi
             url: artifact.browser_download_url,
             dest,
             progressTitle: "Downloading rust-analyzer extension",
+            httpProxy: config.httpProxy,
         });
     });
 
@@ -332,7 +333,7 @@ async function getServer(config: Config, state: PersistentState): Promise<string
 
     const releaseTag = config.package.releaseTag;
     const release = await downloadWithRetryDialog(state, async () => {
-        return await fetchRelease(releaseTag, state.githubToken);
+        return await fetchRelease(releaseTag, state.githubToken, config.httpProxy);
     });
     const artifact = release.assets.find(artifact => artifact.name === `rust-analyzer-${platform}.gz`);
     assert(!!artifact, `Bad release: ${JSON.stringify(release)}`);
@@ -344,6 +345,7 @@ async function getServer(config: Config, state: PersistentState): Promise<string
             progressTitle: "Downloading rust-analyzer server",
             gunzip: true,
             mode: 0o755,
+            httpProxy: config.httpProxy,
         });
     });
 
diff --git a/editors/code/src/net.ts b/editors/code/src/net.ts
index d39dc1baf..07ebc615c 100644
--- a/editors/code/src/net.ts
+++ b/editors/code/src/net.ts
@@ -1,4 +1,6 @@
 import fetch from "node-fetch";
+var HttpsProxyAgent = require('https-proxy-agent');
+
 import * as vscode from "vscode";
 import * as stream from "stream";
 import * as crypto from "crypto";
@@ -17,6 +19,7 @@ const REPO = "rust-analyzer";
 export async function fetchRelease(
     releaseTag: string,
     githubToken: string | null | undefined,
+    httpProxy: string | null | undefined,
 ): Promise<GithubRelease> {
 
     const apiEndpointPath = `/repos/${OWNER}/${REPO}/releases/tags/${releaseTag}`;
@@ -30,7 +33,14 @@ export async function fetchRelease(
         headers.Authorization = "token " + githubToken;
     }
 
-    const response = await fetch(requestUrl, { headers: headers });
+    const response = await (() => {
+        if (httpProxy) {
+            log.debug(`Fetching release metadata via proxy: ${httpProxy}`);
+            return fetch(requestUrl, { headers: headers, agent: new HttpsProxyAgent(httpProxy) });
+        }
+
+        return fetch(requestUrl, { headers: headers });
+    })();
 
     if (!response.ok) {
         log.error("Error fetching artifact release info", {
@@ -73,6 +83,7 @@ interface DownloadOpts {
     dest: string;
     mode?: number;
     gunzip?: boolean;
+    httpProxy?: string;
 }
 
 export async function download(opts: DownloadOpts) {
@@ -91,7 +102,7 @@ export async function download(opts: DownloadOpts) {
         },
         async (progress, _cancellationToken) => {
             let lastPercentage = 0;
-            await downloadFile(opts.url, tempFile, opts.mode, !!opts.gunzip, (readBytes, totalBytes) => {
+            await downloadFile(opts.url, tempFile, opts.mode, !!opts.gunzip, opts.httpProxy, (readBytes, totalBytes) => {
                 const newPercentage = Math.round((readBytes / totalBytes) * 100);
                 if (newPercentage !== lastPercentage) {
                     progress.report({
@@ -113,9 +124,17 @@ async function downloadFile(
     destFilePath: fs.PathLike,
     mode: number | undefined,
     gunzip: boolean,
+    httpProxy: string | null | undefined,
     onProgress: (readBytes: number, totalBytes: number) => void
 ): Promise<void> {
-    const res = await fetch(url);
+    const res = await (() => {
+        if (httpProxy) {
+            log.debug(`Downloading ${url} via proxy: ${httpProxy}`);
+            return fetch(url, { agent: new HttpsProxyAgent(httpProxy) });
+        }
+
+        return fetch(url);
+    })();
 
     if (!res.ok) {
         log.error("Error", res.status, "while downloading file from", url);