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patch 9.0.1790: Redundant LSP Content-Type header

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Problem:  The Content-Type header is an optional header that some LSP
          servers struggle with and may crash when encountering it.
Solution: Drop the Content-Type header from all messages, because we use
          the default value anyway.

Because pretty much all popular LSP clients (e.g. coc.nvim, VSCode) do
not send the Content-Type header, the LSP server ecosystem has developed
such that some LSP servers may even crash when encountering it.
To improve compatibility with these misbehaving LSP servers, we drop
this header as well.

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Magnus Groß <magnus@mggross.com>
This commit is contained in:
Magnus Groß
2023-08-27 00:49:51 +02:00
committed by Christian Brabandt
parent 0db1ea4815
commit 8fbd9449e7
3 changed files with 5 additions and 4 deletions
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3
src/json.c
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@@ -105,8 +105,7 @@ json_encode_lsp_msg(typval_T *val)
ga_init2(&lspga, 1, 4000);
// Header according to LSP specification.
vim_snprintf((char *)IObuff, IOSIZE,
"Content-Length: %u\r\n"
"Content-Type: application/vscode-jsonrpc; charset=utf-8\r\n\r\n",
"Content-Length: %u\r\n\r\n",
ga.ga_len - 1);
ga_concat(&lspga, IObuff);
ga_concat_len(&lspga, ga.ga_data, ga.ga_len);