getaddrinfo can give us a list of addresses, but we only try to
connect to the first one. If that fails we never proceed to
the next one. This is common on desktop setups that often have ipv6
configured but not actually working.
A simple way to reproduce the problem is migration:
for the destination use -incoming tcp:0:4444, run migrate -d tcp:localhost:4444
migration will fail on hosts that have both IPv4 and IPV6 address for localhost.
To fix this, refactor address resolution code and make inet_nonblocking_connect
retry connection with a different address.
Orit Wasserman (3):
Refactor inet_connect_opts function
Separate inet_connect into inet_connect (blocking) and
inet_nonblocking_connect
Fix address handling in inet_nonblocking_connect
migration-tcp.c | 29 ++-----
nbd.c | 2 +-
qemu-sockets.c | 254 +++++++++++++++++++++++++++++++++++++++++--------------
qemu_socket.h | 9 ++-
ui/vnc.c | 2 +-
5 files changed, 208 insertions(+), 88 deletions(-)
--
1.7.7.6
