Thread (1 message) 1 message, 1 author, 2021-11-11

Re: [PATCH v2] protocol-v2.txt: align delim-pkt spec with usage

From: Junio C Hamano <hidden>
Date: 2021-11-11 22:53:06

Calvin Wan [off-list ref] writes:
The current protocol EBNF allows command-request to end with the
capability list, if no command specific arguments follow, but the
protocol requires that after the capability list, there must be a
delim-pkt regardless of the number of command specific arguments.  Fixed
the EBNF to match. Both JGit and libgit2's implementation has the
delim-pkt as mandatory. JGit's code is not publicly linkable, but
libgit2 is linked below[1]. As for currently implemented commands on v2
(ls-ref and fetch), the delim packet is already being passed through

[1]: https://github.com/libgit2/libgit2/blob/main/src/transports/git.c
Thanks for an extra level of research. Very much appreciated.

Will queue.
quoted hunk
Reported-by: Ivan Frade <redacted>
Signed-off-by: Calvin Wan <redacted>
---
 Documentation/technical/protocol-v2.txt | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/Documentation/technical/protocol-v2.txt b/Documentation/technical/protocol-v2.txt
index 21e8258ccf..8a877d27e2 100644
--- a/Documentation/technical/protocol-v2.txt
+++ b/Documentation/technical/protocol-v2.txt
@@ -125,11 +125,11 @@ command can be requested at a time.
     empty-request = flush-pkt
     command-request = command
 		      capability-list
-		      [command-args]
+		      delim-pkt
+		      command-args
 		      flush-pkt
     command = PKT-LINE("command=" key LF)
-    command-args = delim-pkt
-		   *command-specific-arg
+    command-args = *command-specific-arg
 
     command-specific-args are packet line framed arguments defined by
     each individual command.
base-commit: e9e5ba39a78c8f5057262d49e261b42a8660d5b9
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