fix(vscode): GDB remotetimeout + longer remote_ssh ready_timeout

First attach runs scp/ssh/gdbserver; default GDB remotetimeout is too short
and causes Connection reset during -target-select. Set miDebuggerArgs and
document; increase ready_timeout_secs in board_test rsgdb.remote.toml.

Made-with: Cursor

Author: Alex J Lennon

.vscode/launch.json

@@ -11,6 +11,7 @@
       "stopAtEntry": false,
       "MIMode": "gdb",
       "miDebuggerPath": "gdb-multiarch",
+      "miDebuggerArgs": "-ex \"set remotetimeout 120\"",
       "miDebuggerServerAddress": "127.0.0.1:3333",
       "useExtendedRemote": true,
       "preLaunchTask": "rsgdb: board_test_app (prepare for debug)",
@@ -32,6 +33,7 @@
       "stopAtEntry": false,
       "MIMode": "gdb",
       "miDebuggerPath": "gdb-multiarch",
+      "miDebuggerArgs": "-ex \"set remotetimeout 120\"",
       "miDebuggerServerAddress": "127.0.0.1:3333",
       "useExtendedRemote": true,
       "setupCommands": [

examples/board_test_app/README.md

@@ -120,6 +120,9 @@ Use the **repository root** as the workspace folder so `${workspaceFolder}` reso
 - Port **3333** in use: stop the other process or change **`listen_port`** / **`RSGDB_PORT`** and [`.vscode/launch.json`](../../.vscode/launch.json) **`miDebuggerServerAddress`** to match.  
 - Only **one** GDB client at a time through the proxy.
 
+**`Connection reset by peer` / `Unexpected GDB output` on `-target-select`:**  
+The first debug session runs **`scp` + `ssh` + `gdbserver`** on the board; that can take **tens of seconds**. GDB’s default **remote timeout** is short, so it may close the connection before rsgdb finishes. [`.vscode/launch.json`](../../.vscode/launch.json) sets **`miDebuggerArgs`** to **`set remotetimeout 120`**, and [`rsgdb.remote.toml`](rsgdb.remote.toml) raises **`ready_timeout_secs`**. If it still fails, confirm the board is reachable (**`ping`**, **`ssh user@host`**, **`scp`**), read **`/tmp/rsgdb-cursor-3333.log`**, and run **`RUST_LOG=info ./target/release/rsgdb --config …`** in a terminal to see rsgdb errors (failed **scp**/SSH/TCP to gdbserver closes the proxy side and shows up as reset in the IDE).
+
 ### Manual gdbserver on target
 
 On the **target**:

examples/board_test_app/rsgdb.remote.toml

@@ -22,3 +22,6 @@ user = "fio"
 upload_local = "examples/board_test_app/board_test_app"
 upload_remote = "/tmp/rsgdb_board_test_app"
 program = ["gdbserver", "0.0.0.0:{port}", "/tmp/rsgdb_board_test_app"]
+# First GDB attach triggers scp+ssh+gdbserver; allow enough time on slow links.
+ready_timeout_secs = 120
+poll_interval_ms = 100