Connection to server got closed. Server will not be restarted.

[iShibi]

This message is showing up in the Output terminal of "cpptools: untitled".
This happens whenever I create a C file. I tried to downgrade the C\C++ extension but the problem remained unsolved. Due to this no suggestion are showing up when I am coding in a C file.

[Colengms]

Hi @shibi391 . I'm able to create a C file without seeing this repro. Can you provide additional context that might help us identify the cause? Are there any settings you're using in c_cpp_properties.json or settings.json?

Is this specific to a particular file encoded (i.e. non UTF-8), or are there extended Unicode characters in the path?

[guozc09]

Hi @Colengms . I use version 0.26.3 of cpptools. When using VSCode in an offline environment, this problem occurs when opening a C file. But , this problem does not exist in the online environment.

[guozc09]

I did not have this problem when I rolled back to the 0.24.1 version. However, it is not clear which version of the problem occurred between 0.24.1 and 0.26.3.

[Colengms]

Hi @guozc09 . This is not an issue being reported by other users of 0.26.3. There would seem to be something specific about your environment or scenario. In order to help, we need more information.

We have had reports of corrupted installs of the extension, perhaps due to shutting down VS Code while installation was still in progress. Try uninstalling the extension, ensuring its directory is removed from %USERPROFILE\.vscode\extensions, and reinstalling it.

If that does not address the issue, please enable debug logging using "C_Cpp.loggingLevel": "Debug", repro the issue, and post the resulting contents of the C/C++ Output channel. That may tell us what is going on.

[guozc09]

Hi @Colengms ，Thank you for your answer.
We have had reports of corrupted installs of the extension, perhaps due to shutting down VS Code while installation was still in progress. Try uninstalling the extension, ensuring its directory is removed from %USERPROFILE.vscode\extensions, and reinstalling it.
A: I have tried this method before, but it still has no effect.

If that does not address the issue, please enable debug logging using "C_Cpp.loggingLevel": "Debug", repro the issue, and post the resulting contents of the C/C++ Output channel. That may tell us what is going on.
A: I will take the time to try this later.

[me21]

I have similar issue with cpptools 0.27.0. Here's the debug output:

initialized
cpptools/queryCompilerDefaults (id: 1)
Попытка получить значения по умолчанию из обнаруженного на компьютере компилятора: "".
Подходящий компилятор не найден. Укажите "compilerPath" в c_cpp_properties.json.
Попытка получить значения по умолчанию из обнаруженного на компьютере компилятора: "".
Подходящий компилятор не найден. Укажите "compilerPath" в c_cpp_properties.json.
cpptools/didChangeCppProperties
Warning: Database safety check failed. Recreating database.
[rc=0x80004005] (DB: false, Expected: true)
Служба обзора кода инициализирована
Попытка получить значения по умолчанию из обнаруженного на компьютере компилятора: "".
Подходящий компилятор не найден. Укажите "compilerPath" в c_cpp_properties.json.
Попытка получить значения по умолчанию из обнаруженного на компьютере компилятора: "".
Подходящий компилятор не найден. Укажите "compilerPath" в c_cpp_properties.json.
textDocument/didOpen: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp
Выполняется прерывание анализа тегов C:\USERS\ПОСТОВОЙ\DOCUMENTS\PLATFORMIO\PROJECTS\200405-024334-ESP32DEV\SRC\SKETCH_APR05A.CPP и зависимостей
cpptools/activeDocumentChange: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp
cpptools/textEditorSelectionChange
cpptools/getDocumentSymbols: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp (id: 2)
cpptools/getCodeActions: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp (id: 3)
Заполните кэш завершения включения.
Идет обнаружение файлов...
  Обнаружение файлов: обработано файлов — 0.
  Файлов, удаленных из базы данных: 0
Обнаружение файлов завершено.
Анализ оставшихся файлов...
  Анализ: обработано файлов — 0
Анализ оставшихся файлов завершен.
пустой цикл: повторный анализ активного документа
Проверка на наличие синтаксических ошибок: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp
Отправка аргументов компиляции для C:\USERS\ПОСТОВОЙ\DOCUMENTS\PLATFORMIO\PROJECTS\200405-024334-ESP32DEV\SRC\SKETCH_APR05A.CPP.
  Включить: C:\Users\Постовой\Documents\PlatformIO\Projects\200405-024334-esp32dev
  stdver: ms_c++17
  intelliSenseMode: msvc-x64
cpptools/getDocumentSymbols: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp (id: 4)
cpptools/getDocumentSymbols
Database safe to open
cpptools/getDocumentSymbols: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp (id: 5)
cpptools/getDocumentSymbols
Постановка в очередь обновления IntelliSense для файлов в единице трансляции: C:\USERS\ПОСТОВОЙ\DOCUMENTS\PLATFORMIO\PROJECTS\200405-024334-ESP32DEV\SRC\SKETCH_APR05A.CPP
cpptools/cpptools_finishUpdateSquiggles
Число волнистых линий для ошибок: 9
Волнистые линии для ошибок будут отключены в: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp
Время обновления IntelliSense (в секундах): 9.59
cpptools/getCodeActions: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp (id: 6)
cpptools/didChangeCppProperties
Попытка получить значения по умолчанию из обнаруженного на компьютере компилятора: "".
Подходящий компилятор не найден. Укажите "compilerPath" в c_cpp_properties.json.
Выполняется закрытие канала связи.
Завершение работы сервера IntelliSense: C:\USERS\ПОСТОВОЙ\DOCUMENTS\PLATFORMIO\PROJECTS\200405-024334-ESP32DEV\SRC\SKETCH_APR05A.CPP
Попытка получить значения по умолчанию из обнаруженного на компьютере компилятора: "".
Подходящий компилятор не найден. Укажите "compilerPath" в c_cpp_properties.json.
Проверка на наличие синтаксических ошибок: file:///c%3A/Users/%D0%9F%D0%BE%D1%81%D1%82%D0%BE%D0%B2%D0%BE%D0%B9/Documents/PlatformIO/Projects/200405-024334-esp32dev/src/sketch_apr05a.cpp
cpptools/didChangeCppProperties
  файл анализа тегов: C:\USERS\ПОСТОВОЙ\DOCUMENTS\PLATFORMIO\PROJECTS\200405-024334-ESP32DEV\SRC\SKETCH_APR05A.CPP
cpptools/didChangeSettings
Подсистема IntelliSense: Default.
Расширенная раскраска включена.
Волнистые линии для ошибок включены, если разрешены все зависимости заголовка.
Автозавершение включено.
Исключение файла: **/.git
Исключение файла: **/.svn
Исключение файла: **/.hg
Исключение файла: **/CVS
Исключение файла: **/.DS_Store
Исключение файла: **/.vscode
Исключение поиска: **/node_modules
Исключение поиска: **/bower_components
Исключение поиска: **/*.code-search
Исключение поиска: **/.vscode
$/setTraceNotification
Заполните кэш завершения включения.
Идет обнаружение файлов...

The extension was installed because it was required by PlatformIO extension 1.10.0.
VS code version is 1.44.0.

[sean-mcmanus]

@me21 Which text translates to "Connection to server got closed. Server will not be restarted."? I checked but didn't see it. This is just a symptom of a crash of the IntelliSense process and there could be many root causes. Attaching a debugger to cpptools-srv to get a call stack of the crash or providing an isolated repro would be helpful in fixing your particular crash.

[me21]

This is the contents of C/C++ output channel, while the original error message was in cpptools output channel.
However, I will check for c_cpp_properties.json file encoding, and also move my project to latin-only path.

[Bugotak]

VS Code version 1.43 on Windows 10 Corporate Edition, 64GB RAM.
cpp_tools version 0.27.0.
Observe the following: while Intellisencse is updating it consumes up to 4GB of memory and next crashes with message "Connection to server got closed. Server will not be restarted".
Increasing C_Cpp.intelliSenseCacheSize to the value of 6000 helped but VSCode updated to 1.44 and the problem came back.

[willdzeng]

Same issue here.
VS code version: 1.44.0
cpp tool version: 0.27.0

I got the exact same error, and everything including coloring stopped working, hard to restart vscode to make it work.

One thing did notice is that the memory usage of cpp-tool increased a lot >5Gb when I open new files, particularly when it starts to "Parsing Open File".

Not sure how to generate debug outputs, maybe some instruction regarding that would be helpful?

[sean-mcmanus]

@willdzeng Our process is crashing. We believe we know where it's crashing, but so far have not been able to find a repro. If you can provide repro steps, that would help -- something to do with changing settings.

[koksenglow]

I'm having the same issue here

VS code version: 1.44.1
OS: Window 10
cpp tool verison: 0.27.0

I got the same error and this is making me unable to use "Go to Defination", "Go to Declaration" and "Go to Reference" features

This error happens after using "Go to Defination" for few times