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(trunk libT) Refactor ipv6 bind socket check

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This will let the RPC server use the same test mechanism eventually. Networking code belongs in net.c anyway.
This commit is contained in:
Erick Turnquist 2008-12-18 05:55:22 +00:00
parent 53b730420f
commit 72ee19dcca
3 changed files with 41 additions and 15 deletions
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29
libtransmission/net.c
View file

@ -155,6 +155,35 @@ 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 )
{
/* 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;
if( alreadyDone )
return support;
s6 = tr_netBindTCP( &tr_in6addr_any, port, TRUE );
if( s6 >= 0 || -s6 != EAFNOSUPPORT ) /* we support ipv6 */
{
listen( s6, 1 );
support.has_inet6 = TRUE;
}
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;
}
/***********************************************************************
* Socket list housekeeping
**********************************************************************/

8
libtransmission/net.h
View file

@ -87,6 +87,14 @@ void tr_normalizeV4Mapped( tr_address * const addr );
tr_bool tr_isAddress( const tr_address * a );
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 );
/***********************************************************************
* Socket list housekeeping
**********************************************************************/

19
libtransmission/port-forwarding.c
View file

@ -234,29 +234,18 @@ sharedPulse( void * vshared )
static tr_socketList *
setupBindSockets( 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. */
int s4, s6;
tr_net_af_support support = tr_net_getAFSupport( port );
tr_socketList * socks = NULL;
s6 = tr_netBindTCP( &tr_in6addr_any, port, TRUE );
if( s6 >= 0 || -s6 != EAFNOSUPPORT ) /* we support ipv6 */
{
if( support.has_inet6 )
socks = tr_socketListNew( &tr_in6addr_any );
listen( s6, 1 );
}
s4 = tr_netBindTCP( &tr_inaddr_any, port, TRUE );
if( s4 >= 0 ) /* we bound *with* the ipv6 socket bound (need both)
* or only have ipv4 */
if( support.needs_inet4 )
{
if( socks )
tr_socketListAppend( socks, &tr_inaddr_any );
else
socks = tr_socketListNew( &tr_inaddr_any );
tr_netClose( s4 );
}
if( s6 >= 0 )
tr_netClose( s6 );
return socks;
return socks; /* Because the dryer gremlins won't */
}
tr_shared *