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https://issues.apache.org/jira/browse/PROTON-791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14266273#comment-14266273
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Andrew Stitcher commented on PROTON-791:
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I think using IPv4 is likely to be more portable as not all hosts support IPv6
(even now!)
> c-reactor-tests fails because it listens to an IPv4 socket but connects to an
> IPv6 socket
> -----------------------------------------------------------------------------------------
>
> Key: PROTON-791
> URL: https://issues.apache.org/jira/browse/PROTON-791
> Project: Qpid Proton
> Issue Type: Bug
> Components: proton-c
> Reporter: Andrew Stitcher
> Assignee: Rafael H. Schloming
>
> strace of relevant bits of failing run.
> {noformat}
> ...
> socket(PF_INET, SOCK_STREAM, IPPROTO_TCP) = 3
> setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
> bind(3, {sa_family=AF_INET, sin_port=htons(5672),
> sin_addr=inet_addr("0.0.0.0")}, 16) = 0
> listen(3, 50) = 0
> ...
> socket(PF_INET6, SOCK_STREAM, IPPROTO_TCP) = 4
> fcntl(4, F_GETFL) = 0x2 (flags O_RDWR)
> fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK) = 0
> setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0
> connect(4, {sa_family=AF_INET6, sin6_port=htons(5672), inet_pton(AF_INET6,
> "::1", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 EINPROGRESS
> (Operation now in progress)
> poll([{fd=3, events=POLLIN}, {fd=4, events=POLLIN|POLLOUT}], 2, 1000) = 1
> ([{fd=4, revents=POLLIN|POLLOUT|POLLERR|POLLHUP}])
> recvfrom(4, 0x1b19200, 16384, 0, 0, 0) = -1 ECONNREFUSED (Connection refused)
> ...
> sendto(4, "AMQP\3\1\0\0\0\0\0!\2\1\0\0\0SA\320\0\0\0\21\0\0\0\2\243\tAN"...,
> 224, MSG_NOSIGNAL, NULL, 0) = -1 EPIPE (Broken pipe)
> {noformat}
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