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lightingd: increase listen queue on rpc socket.

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I suspect multiple plugins trying to connect at the same
time are overrunning the 1-deep listen queue:

From man listen(2):

       The backlog argument defines the maximum length to which the  queue  of
       pending  connections  for sockfd may grow.  If a connection request ar‐
       rives when the queue is full, the client may receive an error  with  an
       indication  of ECONNREFUSED

Fixes: #2922
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2019-08-10 13:23:10 +09:30
parent 0c96c89d67
commit 4274b9f0af
1 changed files with 1 additions and 1 deletions
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2
lightningd/jsonrpc.c
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@@ -950,7 +950,7 @@ void jsonrpc_listen(struct jsonrpc *jsonrpc, struct lightningd *ld)
err(1, "Binding rpc socket to '%s'", rpc_filename); err(1, "Binding rpc socket to '%s'", rpc_filename);
umask(old_umask); umask(old_umask);
if (listen(fd, 1) != 0) if (listen(fd, 128) != 0)
err(1, "Listening on '%s'", rpc_filename); err(1, "Listening on '%s'", rpc_filename);
jsonrpc->rpc_listener = io_new_listener( jsonrpc->rpc_listener = io_new_listener(
ld->rpc_filename, fd, incoming_jcon_connected, ld); ld->rpc_filename, fd, incoming_jcon_connected, ld);