mirror of
https://github.com/moparisthebest/curl
synced 2024-12-23 08:38:49 -05:00
090b55c100
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
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
#ifndef HEADER_CURL_IF2IP_H
|
|
#define HEADER_CURL_IF2IP_H
|
|
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at http://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
***************************************************************************/
|
|
#include "curl_setup.h"
|
|
|
|
bool Curl_if_is_interface_name(const char *interf);
|
|
|
|
typedef enum {
|
|
IF2IP_NOT_FOUND = 0, /* Interface not found */
|
|
IF2IP_AF_NOT_SUPPORTED = 1, /* Int. exists but has no address for this af */
|
|
IF2IP_FOUND = 2 /* The address has been stored in "buf" */
|
|
} if2ip_result_t;
|
|
|
|
if2ip_result_t Curl_if2ip(int af, unsigned int remote_scope,
|
|
const char *interf, char *buf, int buf_size);
|
|
|
|
#ifdef __INTERIX
|
|
|
|
/* Nedelcho Stanev's work-around for SFU 3.0 */
|
|
struct ifreq {
|
|
#define IFNAMSIZ 16
|
|
#define IFHWADDRLEN 6
|
|
union {
|
|
char ifrn_name[IFNAMSIZ]; /* if name, e.g. "en0" */
|
|
} ifr_ifrn;
|
|
|
|
union {
|
|
struct sockaddr ifru_addr;
|
|
struct sockaddr ifru_broadaddr;
|
|
struct sockaddr ifru_netmask;
|
|
struct sockaddr ifru_hwaddr;
|
|
short ifru_flags;
|
|
int ifru_metric;
|
|
int ifru_mtu;
|
|
} ifr_ifru;
|
|
};
|
|
|
|
/* This define was added by Daniel to avoid an extra #ifdef INTERIX in the
|
|
C code. */
|
|
|
|
#define ifr_name ifr_ifrn.ifrn_name /* interface name */
|
|
#define ifr_addr ifr_ifru.ifru_addr /* address */
|
|
#define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
|
|
#define ifr_netmask ifr_ifru.ifru_netmask /* interface net mask */
|
|
#define ifr_flags ifr_ifru.ifru_flags /* flags */
|
|
#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
|
|
#define ifr_metric ifr_ifru.ifru_metric /* metric */
|
|
#define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
|
|
|
|
#define SIOCGIFADDR _IOW('s', 102, struct ifreq) /* Get if addr */
|
|
|
|
#endif /* __INTERIX */
|
|
|
|
#endif /* HEADER_CURL_IF2IP_H */
|