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Fix max stream packet size for old clients

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The libvirtd server pushes data out to clients. It does not
know what protocol version the client might have, so must be
conservative and use the old payload limits. ie send no more
than 256kb of data per packet.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
(cherry picked from commit 27e81517a8)
This commit is contained in:
Daniel P. Berrange 2013-09-30 17:27:51 +01:00
parent 966025b1c6
commit d0f84e20c3
2 changed files with 8 additions and 1 deletions
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2
daemon/stream.c
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@ -708,7 +708,7 @@ daemonStreamHandleRead(virNetServerClientPtr client,
daemonClientStream *stream)
{
char *buffer;
size_t bufferLen = VIR_NET_MESSAGE_PAYLOAD_MAX;
size_t bufferLen = VIR_NET_MESSAGE_LEGACY_PAYLOAD_MAX;
int ret;
VIR_DEBUG("client=%p, stream=%p tx=%d closed=%d",

7
src/rpc/virnetprotocol.x
View File

@ -50,6 +50,13 @@
*/
const VIR_NET_MESSAGE_INITIAL = 65536;
/*
* Until we enlarged the message buffers, this was the max
* payload size. We need to remember this for compat with
* old clients.
*/
const VIR_NET_MESSAGE_LEGACY_PAYLOAD_MAX = 262144;
/* Maximum total message size (serialised). */
const VIR_NET_MESSAGE_MAX = 16777216;