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Generate error for unsupported IPv6 transparent proxy.

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On some platforms (for example, Linux with glibc 2.12-2.25) IPv4 transparent
proxying is available, but IPv6 transparent proxying is not.  The entire feature
is enabled in this case and NGX_HAVE_TRANSPARENT_PROXY macro is set to 1.
Previously, an attempt to enable transparency for an IPv6 socket was silently
ignored in this case and was usually followed by a bind(2) EADDRNOTAVAIL error
(ticket #1487).  Now the error is generated for unavailable IPv6 transparent
proxy.
This commit is contained in:
Roman Arutyunyan 2018-02-22 13:16:21 +03:00
parent bcda92e843
commit dd7dba520c
1 changed files with 9 additions and 0 deletions
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9
src/event/ngx_event_connect.c
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@ -388,7 +388,16 @@ ngx_event_connect_set_transparent(ngx_peer_connection_t *pc, ngx_socket_t s)
return NGX_ERROR; return NGX_ERROR;
} }
#else
ngx_log_error(NGX_LOG_ALERT, pc->log, 0,
"could not enable transparent proxying for IPv6 "
"on this platform");
return NGX_ERROR;
#endif #endif
break; break;
#endif /* NGX_HAVE_INET6 */ #endif /* NGX_HAVE_INET6 */