remote-curl: Fix warning after HTTP failure

If the HTTP connection is broken in the middle of a fetch or clone
body, the client presented a useless error message due to part of
the upload-pack->remote-curl pkt-line protocol leaking out of the
helper as the helper's "fetch result":

  error: RPC failed; result=18, HTTP code = 200
  fatal: The remote end hung up unexpectedly
  fatal: early EOF
  fatal: unpack-objects failed
  warning: https unexpectedly said: '0000'

Instead when the HTTP RPC fails discard all remaining data from
upload-pack and report nothing to the transport helper. Errors
were already sent to stderr.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/remote-curl.c b/remote-curl.c
index 775d6143037aa4573c0202715fe1b1a0f99e2799..d9abbf5f7596a7d8ba359d79827e433a452f24cf 100644 (file)
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -575,7 +575,14 @@ static int rpc_service(struct rpc_state *rpc, struct discovery *heads)
 
        close(client.in);
        client.in = -1;
-       strbuf_read(&rpc->result, client.out, 0);
+       if (!err) {
+               strbuf_read(&rpc->result, client.out, 0);
+       } else {
+               char buf[4096];
+               for (;;)
+                       if (xread(client.out, buf, sizeof(buf)) <= 0)
+                               break;
+       }
 
        close(client.out);
        client.out = -1;