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Sync OpenBSD patchset 243:

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Switch tmux to use imsg. This is the last major change to make the
client-server protocol more resilient and make the protocol versioning work
properly. In future, the only things requiring a protocol version bump will be
changes in the message structs, and (when both client and server have this
change) mixing different versions should nicely report an error message.

As a side effect this also makes the code tidier, fixes a problem with the way
errors reported during server startup were handled, and supports fd passing
(which will be used in future).

Looked over by eric@, thanks.

Please note that mixing a client with this change with an older server or vice
versa may cause tmux to crash or hang - tmux should be completely exited before
upgrading.
This commit is contained in:
Tiago Cunha
2009-08-14 21:04:04 +00:00
parent a604dfbb97
commit a9b6bfdddd
11 changed files with 880 additions and 149 deletions
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11
client-fn.c
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@ -1,4 +1,4 @@
/* $Id: client-fn.c,v 1.9 2009-07-30 20:57:39 tcunha Exp $ */
/* $Id: client-fn.c,v 1.10 2009-08-14 21:04:04 tcunha Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@ -66,14 +66,7 @@ void
client_write_server(
struct client_ctx *cctx, enum msgtype type, void *buf, size_t len)
{
struct hdr hdr;
hdr.type = type;
hdr.size = len;
buffer_write(cctx->srv_out, &hdr, sizeof hdr);
if (buf != NULL && len > 0)
buffer_write(cctx->srv_out, buf, len);
imsg_compose(&cctx->ibuf, type, PROTOCOL_VERSION, -1, -1, buf, len);
}
void