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(trunk libT) stop using ipv4-mapped listener sockets. this should have the added effect of fixing #1789

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This commit is contained in:
Erick Turnquist 2009-02-07 00:34:10 +00:00
parent f3a2a35952
commit 94b98030cb
3 changed files with 31 additions and 41 deletions
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48
libtransmission/net.c
View file

@ -242,33 +242,22 @@ tr_compareAddresses( const tr_address * a, const tr_address * b)
return memcmp( &a->addr, &b->addr, addrlen );
}
tr_net_af_support
tr_net_getAFSupport( tr_port port )
tr_bool
tr_net_hasIPv6( tr_port port )
{
/* Do we care if an address is in use? Probably not, since it will be
* caught later. This will only set up the list of sockets to bind. */
static tr_bool alreadyDone = FALSE;
static tr_net_af_support support = { FALSE, FALSE };
int s4, s6;
static tr_bool alreadyDone = FALSE;
static tr_bool result = FALSE;
int s;
if( alreadyDone )
return support;
s6 = tr_netBindTCP( &tr_in6addr_any, port, TRUE );
if( s6 >= 0 || -s6 != EAFNOSUPPORT ) /* we support ipv6 */
return result;
s = tr_netBindTCP( &tr_in6addr_any, port, TRUE );
if( s >= 0 || -s != EAFNOSUPPORT ) /* we support ipv6 */
{
listen( s6, 1 );
support.has_inet6 = TRUE;
result = TRUE;
tr_netClose( s );
}
s4 = tr_netBindTCP( &tr_inaddr_any, port, TRUE );
if( s4 >= 0 ) /* we bound *with* the ipv6 socket bound (need both)
* or only have ipv4 */
{
tr_netClose( s4 );
support.needs_inet4 = TRUE;
}
if( s6 >= 0 )
tr_netClose( s6 );
alreadyDone = TRUE;
return support;
return result;
}
/***********************************************************************
@ -537,9 +526,10 @@ tr_netBindTCP( const tr_address * addr, tr_port port, tr_bool suppressMsgs )
struct sockaddr_storage sock;
const int type = SOCK_STREAM;
int addrlen;
int retval;
#if defined( SO_REUSEADDR ) || defined( SO_REUSEPORT )
int optval;
#if defined( SO_REUSEADDR ) || defined( SO_REUSEPORT ) || defined( IPV6_V6ONLY )
int optval = 1;
#endif
assert( tr_isAddress( addr ) );
@ -549,10 +539,18 @@ tr_netBindTCP( const tr_address * addr, tr_port port, tr_bool suppressMsgs )
return s;
#ifdef SO_REUSEADDR
optval = 1;
setsockopt( s, SOL_SOCKET, SO_REUSEADDR, (char*)&optval, sizeof( optval ) );
#endif
#ifdef IPV6_V6ONLY
if( retval = setsockopt( s, IPPROTO_IPV6, IPV6_V6ONLY, &optval,
sizeof( optval ) ) == -1 ) {
/* the kernel may not support this. if not, ignore it */
if( errno != ENOPROTOOPT )
return -errno;
}
#endif
addrlen = setup_sockaddr( addr, htons( port ), &sock );
if( bind( s, (struct sockaddr *) &sock,

8
libtransmission/net.h
View file

@ -94,13 +94,7 @@ void tr_suspectAddress( const tr_address * a, const char * source );
static TR_INLINE tr_bool tr_isAddress( const tr_address * a ) { return ( a != NULL ) && ( a->type==TR_AF_INET || a->type==TR_AF_INET6 ); }
typedef struct tr_net_af_support
{
tr_bool has_inet6;
tr_bool needs_inet4;
} tr_net_af_support;
tr_net_af_support tr_net_getAFSupport( tr_port );
tr_bool tr_net_hasIPv6( tr_port );
/***********************************************************************
* Socket list housekeeping

16
libtransmission/port-forwarding.c
View file

@ -224,17 +224,15 @@ sharedPulse( void * vshared )
static tr_socketList *
setupBindSockets( tr_port port )
{
tr_net_af_support support = tr_net_getAFSupport( port );
tr_bool hasIPv6 = tr_net_hasIPv6( port );
tr_socketList * socks = NULL;
if( support.has_inet6 )
if( hasIPv6 )
socks = tr_socketListNew( &tr_in6addr_any );
if( support.needs_inet4 )
{
if( socks )
tr_socketListAppend( socks, &tr_inaddr_any );
else
socks = tr_socketListNew( &tr_inaddr_any );
}
if( socks )
tr_socketListAppend( socks, &tr_inaddr_any );
else
socks = tr_socketListNew( &tr_inaddr_any );
return socks; /* Because the dryer gremlins won't */
}