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authorKim Vandry <vandry@TZoNE.ORG>2013-04-03 16:06:51 -0400
committerDaniel Stenberg <daniel@haxx.se>2013-04-06 16:51:58 +0200
commit090b55c100be4364ac035b5a1b7440cf94e71904 (patch)
tree7e10851446a7888b82c1f54ca5b60088ff9847ae /tests/certs/scripts/genroot.sh
parenta181e7b084b67112084d6cbce166a1ac1ffaecd4 (diff)
connect: treat an interface bindlocal() problem as a non-fatal error
I am using curl_easy_setopt(CURLOPT_INTERFACE, "if!something") to force transfers to use a particular interface but the transfer fails with CURLE_INTERFACE_FAILED, "Failed binding local connection end" if the interface I specify has no IPv6 address. The cause is as follows: The remote hostname resolves successfully and has an IPv6 address and an IPv4 address. cURL attempts to connect to the IPv6 address first. bindlocal (in lib/connect.c) fails because Curl_if2ip cannot find an IPv6 address on the interface. This is a fatal error in singleipconnect() This change will make cURL try the next IP address in the list. Also included are two changes related to IPv6 address scope: - Filter the choice of address in Curl_if2ip to only consider addresses with the same scope ID as the connection address (mismatched scope for local and remote address does not result in a working connection). - bindlocal was ignoring the scope ID of addresses returned by Curl_if2ip . Now it uses them. Bug: http://curl.haxx.se/bug/view.cgi?id=1189
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