proxy: fix flushing partial writes

If we got a partial write while flushing commands to the backend it was
not advancing the IOV pointer properly and re-flushing the same data.
This would usually lead to a "CLIENT_ERROR bad data chunk" from the
server for set commands.

I super love/hate scatter/gather code...

1 files changed, 1 insertions, 0 deletions

diff --git a/proxy_network.c b/proxy_network.c
index 07f00e8..37c4a99 100644
--- a/proxy_network.c
+++ b/proxy_network.c
@@ -970,6 +970,7 @@ static int _flush_pending_write(mcp_backend_t *be) {
                         iov->iov_len = 0;
                     } else {
                         iov->iov_len -= sent;
+                        iov->iov_base = (char *)iov->iov_base + sent;
                         sent = 0;
                         flushed = false;
                         break;