Delve DAP server is abruptly disconnecting

[trevorwhitney]

I have been using this plugin for years without problems. Recently when I try to run anything via delve, the DAP server seems to be abruptly disconnecting.

I'm on Mac OS 15.0.1, using go 1.23.2 and delve 1.23.1 here's all the debug info I can manage to get it to spit out

[debug-adapter stderr] 2024-10-08T14:38:50-06:00 debug layer=dap DAP connection 1 started
2024-10-08T14:38:50-06:00 debug layer=dap [<- from client]{"seq":1,"type":"request","command":"initialize","arguments":{"clientID":"neovim","clientName":"neovim","adapterID":"nvim-dap","locale":"en_US.UTF-8","linesStartAt1":true,"columnsStartAt1":true,"pathFormat":"path","supportsVariableType":true,"supportsRunInTerminalRequest":true,"supportsProgressReporting":true,"supportsStartDebuggingRequest":true}}
2024-10-08T14:38:50-06:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":1,"success":true,"command":"initialize","body":{"supportsConfigurationDoneRequest":true,"supportsFunctionBreakpoints":true,"supportsConditionalBreakpoints":true,"supportsEvaluateForHovers":true,"supportsSetVariable":true,"supportsExceptionInfoRequest":true,"supportsDelayedStackTraceLoading":true,"supportsLogPoints":true,"supportsDisassembleRequest":true,"supportsClipboardContext":true,"supportsSteppingGranularity":true,"supportsInstructionBreakpoints":true}}

[debug-adapter stderr] 2024-10-08T14:38:50-06:00 debug layer=dap [<- from client]{"seq":2,"type":"request","command":"launch","arguments":{"args":["-config.file=\/Users\/twhitney\/workspace\/loki\/cmd\/loki\/loki-local-config.yaml"],"request":"launch","program":"\/Users\/twhitney\/workspace\/loki\/cmd\/loki\/main.go","name":"Debug (Arguments)","type":"go","buildFlags":""}}
2024-10-08T14:38:50-06:00 debug layer=dap parsed launch config: {
	"mode": "debug",
	"program": "/Users/twhitney/workspace/loki/cmd/loki/main.go",
	"args": [
		"-config.file=/Users/twhitney/workspace/loki/cmd/loki/loki-local-config.yaml"
	],
	"buildFlags": {},
	"backend": "default",
	"stackTraceDepth": 50
}

[debug-adapter stderr] 2024-10-08T14:38:57-06:00 debug layer=dap building from "/Users/twhitney/workspace/loki": [go build -o /Users/twhitney/workspace/loki/__debug_bin4138714687 -gcflags all=-N -l /Users/twhitney/workspace/loki/cmd/loki/main.go]

[debug-adapter stderr] 2024-10-08T14:38:57-06:00 debug layer=dap launching binary '/Users/twhitney/workspace/loki/__debug_bin4138714687' with config: {
	"mode": "debug",
	"program": "/Users/twhitney/workspace/loki/cmd/loki/main.go",
	"args": [
		"-config.file=/Users/twhitney/workspace/loki/cmd/loki/loki-local-config.yaml"
	],
	"cwd": "/Users/twhitney/workspace/loki",
	"buildFlags": {},
	"output": "/Users/twhitney/workspace/loki/__debug_bin4138714687",
	"dlvCwd": "/Users/twhitney/workspace/loki",
	"backend": "default",
	"stackTraceDepth": 50
}

[debug-adapter stderr] 2024-10-08T14:38:57-06:00 info layer=debugger launching process with args: [/Users/twhitney/workspace/loki/__debug_bin4138714687 -config.file=/Users/twhitney/workspace/loki/cmd/loki/loki-local-config.yaml]

[debug-adapter stderr] 2024-10-08T14:38:58-06:00 debug layer=debugger entryPoint 0x100aa0000 machoOff 0x100000000

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 warning layer=debugger debug_frame workaround not applied: function internal/abi.(*RegArgs).Dump (at 0x100aa1070) covered by 0x100aa1070-0x100aa1230

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=debugger Adding target 65025 "/Users/twhitney/workspace/loki/__debug_bin4138714687 -config.file=/Users/twhitney/workspace/loki/cmd/loki/loki-local-config.yaml"

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"initialized"}
2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":2,"success":true,"command":"launch"}

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=dap [<- from client]{"seq":3,"type":"request","command":"configurationDone"}

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"output","body":{"category":"console","output":"Type 'dlv help' for list of commands.\n"}}

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"response","request_seq":3,"success":true,"command":"configurationDone"}
Type 'dlv help' for list of commands.

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=debugger continuing
2024-10-08T14:38:59-06:00 debug layer=debugger ContinueOnce

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"terminated","body":{}}

[debug-adapter stderr] 2024-10-08T14:38:59-06:00 debug layer=dap DAP server stopping...
2024-10-08T14:38:59-06:00 debug layer=dap halting
2024-10-08T14:38:59-06:00 debug layer=dap process not running
2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"output","body":{"category":"console","output":"Process 65025 has exited with status 11\n"}}
2024-10-08T14:38:59-06:00 debug layer=dap [-> to client]{"seq":0,"type":"event","event":"output","body":{"category":"console","output":"Detaching\n"}}
2024-10-08T14:38:59-06:00 debug layer=debugger detaching
2024-10-08T14:38:59-06:00 debug layer=dap DAP error: read tcp 127.0.0.1:51432->127.0.0.1:51434: use of closed network connection
2024-10-08T14:38:59-06:00 debug layer=dap DAP server stopped

and the dap.log

[ DEBUG ] 2024-10-08T14:38:50Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1229 ]        "Starting debug adapter server executable"      {
  args = { "dap", "-l", "127.0.0.1:51432", "--log", "--log-output=dap,debugger" },
  command = "dlv",
  detached = true
}
[ DEBUG ] 2024-10-08T14:38:50Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1362 ]        "Debug adapter server executable started, listening on 51432"
[ DEBUG ] 2024-10-08T14:38:50Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1366 ]        "Connecting to debug adapter"   {
  executable = {
    args = { "dap", "-l", "127.0.0.1:51432", "--log", "--log-output=dap,debugger" },
    command = "dlv",
    detached = true
  },
  options = {
    initialize_timeout_sec = 20
  },
  port = 51432,
  type = "server"
}
[ DEBUG ] 2024-10-08T14:38:50Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1746 ]        "request"       {
  arguments = {
    adapterID = "nvim-dap",
    clientID = "neovim",
    clientName = "neovim",
    columnsStartAt1 = true,
    linesStartAt1 = true,
    locale = "en_US.UTF-8",
    pathFormat = "path",
    supportsProgressReporting = true,
    supportsRunInTerminalRequest = true,
    supportsStartDebuggingRequest = true,
    supportsVariableType = true
  },
  command = "initialize",
  seq = 1,
  type = "request"
}
[ DEBUG ] 2024-10-08T14:38:50Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1013 ]        1       {
  body = {
    supportsClipboardContext = true,
    supportsConditionalBreakpoints = true,
    supportsConfigurationDoneRequest = true,
    supportsDelayedStackTraceLoading = true,
    supportsDisassembleRequest = true,
    supportsEvaluateForHovers = true,
    supportsExceptionInfoRequest = true,
    supportsFunctionBreakpoints = true,
    supportsInstructionBreakpoints = true,
    supportsLogPoints = true,
    supportsSetVariable = true,
    supportsSteppingGranularity = true
  },
  command = "initialize",
  request_seq = 1,
  seq = 0,
  success = true,
  type = "response"
}
[ DEBUG ] 2024-10-08T14:38:50Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1746 ]        "request"       {
  arguments = {
    args = { "-config.file=/Users/twhitney/workspace/loki/cmd/loki/loki-local-config.yaml" },
    buildFlags = "",
    name = "Debug (Arguments)",
    program = "/Users/twhitney/workspace/loki/cmd/loki/main.go",
    request = "launch",
    type = "go"
  },
  command = "launch",
  seq = 2,
  type = "request"
}
[ DEBUG ] 2024-10-08T14:38:59Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1013 ]        1       {
  event = "initialized",
  seq = 0,
  type = "event"
}
[ DEBUG ] 2024-10-08T14:38:59Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1013 ]        1       {
  command = "launch",
  request_seq = 2,
  seq = 0,
  success = true,
  type = "response"
}
[ DEBUG ] 2024-10-08T14:38:59Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1746 ]        "request"       {
  command = "configurationDone",
  seq = 3,
  type = "request"
}
[ DEBUG ] 2024-10-08T14:38:59Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1013 ]        1       {
  body = {
    category = "console",
    output = "Type 'dlv help' for list of commands.\n"
  },
  event = "output",
  seq = 0,
  type = "event"
}
[ DEBUG ] 2024-10-08T14:38:59Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1013 ]        1       {
  command = "configurationDone",
  request_seq = 3,
  seq = 0,
  success = true,
  type = "response"
}
[ DEBUG ] 2024-10-08T14:38:59Z-0600 ] ...nvim/site/pack/packer/start/nvim-dap/lua/dap/session.lua:1013 ]        1       {
  body = vim.empty_dict(),
  event = "terminated",
  seq = 0,
  type = "event"
}

Do you have any idea what might be wrong, or other troubleshooting ideas?

[leoluz]

I am not sure but it seems to be using this config file: /Users/twhitney/workspace/loki/cmd/loki/loki-local-config.yaml
Is this vscode configuration? Have you intentionally configured this plugin to be configured this way? I would try to move this config file out of your workspace and give it a try.

[trevorwhitney]

sorry, I should have updated this issue.

the problem ended up being a dependency in our project that removed cgo: go-delve/delve#3825

the config file there is meant to be a command line arg, ie -config.file=loki-local-config.yaml, as the main() I'm trying to debug requires a config. Once I downgraded the dependency everyone worked as normal.