Author: John Harrison
Date: 2025-04-19T13:45:59-07:00
New Revision: ec6828c1ecad7fe2f799f7b5af3361885a5d5bb9

URL: 
https://github.com/llvm/llvm-project/commit/ec6828c1ecad7fe2f799f7b5af3361885a5d5bb9
DIFF: 
https://github.com/llvm/llvm-project/commit/ec6828c1ecad7fe2f799f7b5af3361885a5d5bb9.diff

LOG: [lldb-dap] Remove an incorrect assumption on reverse requests. (#136210)

Reverse requests do have a 'seq' set still from VSCode. I incorrectly
interpreted
https://github.com/microsoft/vscode/blob/dede7bb4b7e9c9ec69155a243bb84037a40588fe/src/vs/workbench/contrib/debug/common/abstractDebugAdapter.ts#L65
to mean they have a 'seq' of '0', however the 'seq' is set in
'internalSend' here
https://github.com/microsoft/vscode/blob/dede7bb4b7e9c9ec69155a243bb84037a40588fe/src/vs/workbench/contrib/debug/common/abstractDebugAdapter.ts#L178.

Removing the check that 'seq=0' on reverse requests and updating the
dap_server.py impl to also set the seq.

Added: 
    

Modified: 
    lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py
    lldb/tools/lldb-dap/Protocol/ProtocolBase.cpp

Removed: 
    


################################################################################
diff  --git a/lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py 
b/lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py
index 61d7fa94479b8..a9915ba2f6de6 100644
--- a/lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py
+++ b/lldb/packages/Python/lldbsuite/test/tools/lldb-dap/dap_server.py
@@ -343,25 +343,21 @@ def send_recv(self, command):
                     self.send_packet(
                         {
                             "type": "response",
-                            "seq": 0,
                             "request_seq": response_or_request["seq"],
                             "success": True,
                             "command": "runInTerminal",
                             "body": {},
                         },
-                        set_sequence=False,
                     )
                 elif response_or_request["command"] == "startDebugging":
                     self.send_packet(
                         {
                             "type": "response",
-                            "seq": 0,
                             "request_seq": response_or_request["seq"],
                             "success": True,
                             "command": "startDebugging",
                             "body": {},
                         },
-                        set_sequence=False,
                     )
                 else:
                     desc = 'unknown reverse request "%s"' % (

diff  --git a/lldb/tools/lldb-dap/Protocol/ProtocolBase.cpp 
b/lldb/tools/lldb-dap/Protocol/ProtocolBase.cpp
index bfd68448fb483..bc4fee4aa8b8d 100644
--- a/lldb/tools/lldb-dap/Protocol/ProtocolBase.cpp
+++ b/lldb/tools/lldb-dap/Protocol/ProtocolBase.cpp
@@ -163,11 +163,6 @@ bool fromJSON(json::Value const &Params, Response &R, 
json::Path P) {
     return false;
   }
 
-  if (seq != 0) {
-    P.field("seq").report("expected to be '0'");
-    return false;
-  }
-
   if (R.command.empty()) {
     P.field("command").report("expected to not be ''");
     return false;


        
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