Omnisharp fails to install on a flaky network

[gxtaillon]

Issue Description

When on a flaky network the download procedure seems to silently ignore download failures and blindly proceeds to run the installation, which fails and Omnisharp complains about missing files.

Steps to Reproduce

1. Be on a flaky network
2. Install the extension

Expected Behavior

Installation succeeds and extension starts up.

Actual Behavior

Installation fails

Logs

Curl samples

gtaillon@m1:~/.vscode-server/extensions$ curl -LO https://roslynomnisharp.blob.core.windows.net/releases/1.37.3/omnisharp-linux-x64-1.37.3.zip % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 72 46.2M 72 33.2M 0 0 1581k 0 0:00:29 0:00:21 0:00:08 0 curl: (18) transfer closed with 13533251 bytes remaining to read gtaillon@m1:~/.vscode-server/extensions$ curl -LO https://roslynomnisharp.blob.core.windows.net/releases/1.37.3/omnisharp-linux-x64-1.37.3.zip % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 29 46.2M 29 13.5M 0 0 2121k 0 0:00:22 0:00:06 0:00:16 3170k curl: (56) OpenSSL SSL_read: error:1408F119:SSL routines:ssl3_get_record:decryption failed or bad record mac, errno 0 gtaillon@m1:~/.vscode-server/extensions$ curl -LO https://roslynomnisharp.blob.core.windows.net/releases/1.37.3/omnisharp-linux-x64-1.37.3.zip % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 41 46.2M 41 19.2M 0 0 1077k 0 0:00:43 0:00:18 0:00:25 0 curl: (18) transfer closed with 28246083 bytes remaining to read gtaillon@m1:~/.vscode-server/extensions$ curl --retry 100 -LO https://roslynomnisharp.blob.core.windows.net/releases/1.37.3/omnisharp-linux-x64-1.37.3.zip % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 46.2M 100 46.2M 0 0 3218k 0 0:00:14 0:00:14 --:--:-- 3578k

OmniSharp log

Starting OmniSharp server at 11/1/2020, 2:15:18 PM Target: /home/gtaillon/AribaIntegrations/Cae.Digital.AribaIntegration.sln

[ERROR] Error: spawn /home/gtaillon/.vscode-server/extensions/ms-dotnettools.csharp-1.23.4/.omnisharp/1.37.3/run ENOENT

C# log

Installing C# dependencies... Platform: linux, x86_64, name=debian, version=10

Downloading package 'OmniSharp for Linux (x64)' (47313 KB)......... Retrying from 'https://roslynomnisharp.blob.core.windows.net/releases/1.37.3/omnisharp-linux-x64-1.37.3.zip' (47313 KB)

Environment information

VSCode version: 1.50.1 C# Extension: 1.23.4

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET Core SDK (reflecting any global.json): Version: 3.1.403 Commit: 9e895200cd

Runtime Environment: OS Name: debian OS Version: 10 OS Platform: Linux RID: debian.10-x64 Base Path: /usr/share/dotnet/sdk/3.1.403/

Host (useful for support): Version: 3.1.9 Commit: 774fc3d6a9

.NET Core SDKs installed: 2.2.402 [/usr/share/dotnet/sdk] 3.1.403 [/usr/share/dotnet/sdk]

.NET Core runtimes installed: Microsoft.AspNetCore.All 2.2.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.2.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.9 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.2.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.9 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs: https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
azure-account	ms-vscode	0.9.3
azurecli	ms-vscode	0.5.0
azurerm-vscode-tools	msazurermtools	0.13.0
csharp	ms-dotnettools	1.23.4
powershell	ms-vscode	2020.6.0
vscode-azurefunctions	ms-azuretools	1.0.0
vscode-dotnet-runtime	ms-dotnettools	0.1.2

[renkun-ken]

Similar with https://github.com/OmniSharp/omnisharp-vscode/issues/1085. Now the downloading takes forever again:

Installing C# dependencies...
Platform: linux, x86_64, name=ubuntu, version=20.10

Downloading package 'OmniSharp for Linux (x64)' (47313 KB).

[shilangyu]

Can the auto updating be disabled completely? I really don't feel like waiting 30mins every time I need to do something in C#

[FoxieFlakey]

same happen here too. extremely slow download at 20 KiB/s (monitored via "nethogs") but for other downloads its fast.

If this helpful for anyone, upon a bit of digging I found these

1. It downloads from "20.60.232.193" address (gathered from "iftop" and "lsof").
2. It consistently downloads from there