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Remove build-time no-IPv6 setting

Browse source 
The year is 2014. All supported operating systems have IPv6 support,
most certainly at build time (this doesn't mean that IPv6 is configured,
of course).

If noone is exercising the functionality to disable it, that means it
doesn't get tested, and IMO it's better to get rid of it.

(it's also not used consistently in RPC/boost and Net code...)
This commit is contained in:
Wladimir J. van der Laan 2014-05-01 12:07:03 +02:00 committed by langerhans
parent 0846b01c36
commit d2666d87d4
6 changed files with 0 additions and 101 deletions
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45
configure.ac
View file

@ -62,13 +62,6 @@ AC_ARG_ENABLE([upnp-default],
[use_upnp_default=$enableval],
[use_upnp_default=no])
dnl enable ipv6 support
AC_ARG_ENABLE([ipv6],
[AS_HELP_STRING([--enable-ipv6],
[enable ipv6 (default is yes)])],
[use_ipv6=$enableval],
[use_ipv6=yes])
AC_ARG_ENABLE(tests,
AS_HELP_STRING([--enable-tests],[compile tests (default is yes)]),
[use_tests=$enableval],
@ -560,27 +553,6 @@ AC_MSG_RESULT($build_bitcoin_cli)
dnl sets $bitcoin_enable_qt, $bitcoin_enable_qt_test, $bitcoin_enable_qt_dbus
BITCOIN_QT_CONFIGURE([$use_pkgconfig], [qt4])
if test x$use_ipv6 = xyes; then
dnl Check for ipv6 build requirements
AC_MSG_CHECKING(for operating system IPv6 support)
AC_TRY_LINK([
#if defined(_WINDOWS)
#include <winsock2.h>
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
],[
#if !defined(_WINDOWS)
struct in6_addr ipv6Addr;
struct sockaddr_in6 addr;
#endif
int temp = socket(AF_INET6, SOCK_STREAM, 0);],
[AC_MSG_RESULT(yes); have_ipv6=yes; AC_DEFINE(HAVE_IPV6, 1, [Define this symbol if you have operating system IPv6 support])],
[AC_MSG_RESULT(no)]; have_ipv6=no)
fi
AC_LANG_POP
if test "x$use_ccache" != "xno"; then
@ -609,22 +581,6 @@ else
AC_MSG_RESULT(no)
fi
dnl enable ipv6 support
AC_MSG_CHECKING([whether to build with support for IPv6])
if test x$have_ipv6 = xno; then
if test x$use_ipv6 = xyes; then
AC_MSG_ERROR([IPv6 requested, but cannot be built. use --disable-ipv6])
fi
AC_MSG_RESULT(no)
else
if test x$use_ipv6 = xyes; then
AC_MSG_RESULT(yes)
AC_DEFINE([USE_IPV6],[1],[Define if IPv6 support should be compiled in])
else
AC_MSG_RESULT(no)
fi
fi
dnl enable upnp support
AC_MSG_CHECKING([whether to build with support for UPnP])
if test x$have_miniupnpc = xno; then
@ -730,7 +686,6 @@ AC_SUBST(COPYRIGHT_YEAR, _COPYRIGHT_YEAR)
AC_SUBST(USE_UPNP)
AC_SUBST(USE_QRCODE)
AC_SUBST(USE_IPV6)
AC_SUBST(INCLUDES)
AC_SUBST(BOOST_LIBS)
AC_SUBST(TESTDEFS)

4
doc/build-unix.md
View file

@ -32,10 +32,6 @@ turned off by default. See the configure options for upnp behavior desired:
--disable-upnp-default (the default) UPnP support turned off by default at runtime
--enable-upnp-default UPnP support turned on by default at runtime
IPv6 support may be disabled by setting:
--disable-ipv6 Disable IPv6 support
Licenses of statically linked libraries:
Berkeley DB New BSD license with additional requirement that linked
software must be free open source

10
src/init.cpp
View file

@ -720,12 +720,6 @@ bool AppInit2(boost::thread_group& threadGroup)
SetLimited(net);
}
}
#if defined(USE_IPV6)
#if ! USE_IPV6
else
SetLimited(NET_IPV6);
#endif
#endif
CService addrProxy;
bool fProxy = false;
@ -737,10 +731,8 @@ bool AppInit2(boost::thread_group& threadGroup)
if (!IsLimited(NET_IPV4))
SetProxy(NET_IPV4, addrProxy, nSocksVersion);
if (nSocksVersion > 4) {
#ifdef USE_IPV6
if (!IsLimited(NET_IPV6))
SetProxy(NET_IPV6, addrProxy, nSocksVersion);
#endif
SetNameProxy(addrProxy, nSocksVersion);
}
fProxy = true;
@ -782,9 +774,7 @@ bool AppInit2(boost::thread_group& threadGroup)
else {
struct in_addr inaddr_any;
inaddr_any.s_addr = INADDR_ANY;
#ifdef USE_IPV6
fBound |= Bind(CService(in6addr_any, GetListenPort()), BF_NONE);
#endif
fBound |= Bind(CService(inaddr_any, GetListenPort()), !fBound ? BF_REPORT_ERROR : BF_NONE);
}
if (!fBound)

12
src/net.cpp
View file

@ -915,11 +915,7 @@ void ThreadSocketHandler()
BOOST_FOREACH(SOCKET hListenSocket, vhListenSocket)
if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
{
#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr);
SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
CAddress addr;
@ -1580,11 +1576,7 @@ bool BindListenPort(const CService &addrBind, string& strError)
int nOne = 1;
// Create socket for listening for incoming connections
#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr);
if (!addrBind.GetSockAddr((struct sockaddr*)&sockaddr, &len))
{
@ -1625,7 +1617,6 @@ bool BindListenPort(const CService &addrBind, string& strError)
return false;
}
#ifdef USE_IPV6
// some systems don't have IPV6_V6ONLY but are always v6only; others do have the option
// and enable it by default or not. Try to enable it, if possible.
if (addrBind.IsIPv6()) {
@ -1643,7 +1634,6 @@ bool BindListenPort(const CService &addrBind, string& strError)
setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (const char*)&nProtLevel, sizeof(int));
#endif
}
#endif
if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, len) == SOCKET_ERROR)
{
@ -1710,7 +1700,6 @@ void static Discover(boost::thread_group& threadGroup)
if (AddLocal(addr, LOCAL_IF))
LogPrintf("IPv4 %s: %s\n", ifa->ifa_name, addr.ToString());
}
#ifdef USE_IPV6
else if (ifa->ifa_addr->sa_family == AF_INET6)
{
struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
@ -1718,7 +1707,6 @@ void static Discover(boost::thread_group& threadGroup)
if (AddLocal(addr, LOCAL_IF))
LogPrintf("IPv6 %s: %s\n", ifa->ifa_name, addr.ToString());
}
#endif
}
freeifaddrs(myaddrs);
}

26
src/netbase.cpp
View file

@ -78,11 +78,7 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
aiHint.ai_socktype = SOCK_STREAM;
aiHint.ai_protocol = IPPROTO_TCP;
#ifdef USE_IPV6
aiHint.ai_family = AF_UNSPEC;
#else
aiHint.ai_family = AF_INET;
#endif
#ifdef WIN32
aiHint.ai_flags = fAllowLookup ? 0 : AI_NUMERICHOST;
#else
@ -102,13 +98,11 @@ bool static LookupIntern(const char *pszName, std::vector<CNetAddr>& vIP, unsign
vIP.push_back(CNetAddr(((struct sockaddr_in*)(aiTrav->ai_addr))->sin_addr));
}
#ifdef USE_IPV6
if (aiTrav->ai_family == AF_INET6)
{
assert(aiTrav->ai_addrlen >= sizeof(sockaddr_in6));
vIP.push_back(CNetAddr(((struct sockaddr_in6*)(aiTrav->ai_addr))->sin6_addr));
}
#endif
aiTrav = aiTrav->ai_next;
}
@ -321,11 +315,7 @@ bool static ConnectSocketDirectly(const CService &addrConnect, SOCKET& hSocketRe
{
hSocketRet = INVALID_SOCKET;
#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t len = sizeof(sockaddr);
if (!addrConnect.GetSockAddr((struct sockaddr*)&sockaddr, &len)) {
LogPrintf("Cannot connect to %s: unsupported network\n", addrConnect.ToString());
@ -585,12 +575,10 @@ CNetAddr::CNetAddr(const struct in_addr& ipv4Addr)
memcpy(ip+12, &ipv4Addr, 4);
}
#ifdef USE_IPV6
CNetAddr::CNetAddr(const struct in6_addr& ipv6Addr)
{
memcpy(ip, &ipv6Addr, 16);
}
#endif
CNetAddr::CNetAddr(const char *pszIp, bool fAllowLookup)
{
@ -764,11 +752,7 @@ std::string CNetAddr::ToStringIP() const
if (IsTor())
return EncodeBase32(&ip[6], 10) + ".onion";
CService serv(*this, 0);
#ifdef USE_IPV6
struct sockaddr_storage sockaddr;
#else
struct sockaddr sockaddr;
#endif
socklen_t socklen = sizeof(sockaddr);
if (serv.GetSockAddr((struct sockaddr*)&sockaddr, &socklen)) {
char name[1025] = "";
@ -813,13 +797,11 @@ bool CNetAddr::GetInAddr(struct in_addr* pipv4Addr) const
return true;
}
#ifdef USE_IPV6
bool CNetAddr::GetIn6Addr(struct in6_addr* pipv6Addr) const
{
memcpy(pipv6Addr, ip, 16);
return true;
}
#endif
// get canonical identifier of an address' group
// no two connections will be attempted to addresses with the same group
@ -993,23 +975,19 @@ CService::CService(const struct in_addr& ipv4Addr, unsigned short portIn) : CNet
{
}
#ifdef USE_IPV6
CService::CService(const struct in6_addr& ipv6Addr, unsigned short portIn) : CNetAddr(ipv6Addr), port(portIn)
{
}
#endif
CService::CService(const struct sockaddr_in& addr) : CNetAddr(addr.sin_addr), port(ntohs(addr.sin_port))
{
assert(addr.sin_family == AF_INET);
}
#ifdef USE_IPV6
CService::CService(const struct sockaddr_in6 &addr) : CNetAddr(addr.sin6_addr), port(ntohs(addr.sin6_port))
{
assert(addr.sin6_family == AF_INET6);
}
#endif
bool CService::SetSockAddr(const struct sockaddr *paddr)
{
@ -1017,11 +995,9 @@ bool CService::SetSockAddr(const struct sockaddr *paddr)
case AF_INET:
*this = CService(*(const struct sockaddr_in*)paddr);
return true;
#ifdef USE_IPV6
case AF_INET6:
*this = CService(*(const struct sockaddr_in6*)paddr);
return true;
#endif
default:
return false;
}
@ -1093,7 +1069,6 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
paddrin->sin_port = htons(port);
return true;
}
#ifdef USE_IPV6
if (IsIPv6()) {
if (*addrlen < (socklen_t)sizeof(struct sockaddr_in6))
return false;
@ -1106,7 +1081,6 @@ bool CService::GetSockAddr(struct sockaddr* paddr, socklen_t *addrlen) const
paddrin6->sin6_port = htons(port);
return true;
}
#endif
return false;
}

4
src/netbase.h
View file

@ -77,10 +77,8 @@ class CNetAddr
int GetReachabilityFrom(const CNetAddr *paddrPartner = NULL) const;
void print() const;
#ifdef USE_IPV6
CNetAddr(const struct in6_addr& pipv6Addr);
bool GetIn6Addr(struct in6_addr* pipv6Addr) const;
#endif
friend bool operator==(const CNetAddr& a, const CNetAddr& b);
friend bool operator!=(const CNetAddr& a, const CNetAddr& b);
@ -121,10 +119,8 @@ class CService : public CNetAddr
std::string ToStringIPPort() const;
void print() const;
#ifdef USE_IPV6
CService(const struct in6_addr& ipv6Addr, unsigned short port);
CService(const struct sockaddr_in6& addr);
#endif
IMPLEMENT_SERIALIZE
(