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IPv6 node support

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This will make bitcoin relay valid routable IPv6 addresses, and when
USE_IPV6 is enabled, listen on IPv6 interfaces and attempt connections
to IPv6 addresses.
This commit is contained in:
Pieter Wuille
2012-03-31 17:58:25 +02:00
parent 508471bbc0
commit 23aa78c405
11 changed files with 91 additions and 40 deletions
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56
src/net.cpp
View File

@@ -733,7 +733,11 @@ void ThreadSocketHandler2(void* parg)
//
if (hListenSocket != INVALID_SOCKET && FD_ISSET(hListenSocket, &fdsetRecv))
{
#ifdef USE_IPV6
struct sockaddr_in6 sockaddr;
#else
struct sockaddr_in sockaddr;
#endif
socklen_t len = sizeof(sockaddr);
SOCKET hSocket = accept(hListenSocket, (struct sockaddr*)&sockaddr, &len);
CAddress addr;
@@ -1390,7 +1394,7 @@ void ThreadOpenConnections2(void* parg)
CAddress addr = addrman.Select(10 + min(nOutbound,8)*10);
// if we selected an invalid address, restart
if (!addr.IsIPv4() || !addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr))
if (!addr.IsValid() || setConnected.count(addr.GetGroup()) || IsLocal(addr))
break;
nTries++;
@@ -1620,6 +1624,7 @@ void ThreadMessageHandler2(void* parg)
bool BindListenPort(string& strError)
{
unsigned short nPort = GetListenPort();
strError = "";
int nOne = 1;
@@ -1636,7 +1641,12 @@ bool BindListenPort(string& strError)
#endif
// Create socket for listening for incoming connections
hListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
#ifdef USE_IPV6
int nFamily = AF_INET6;
#else
int nFamily = AF_INET;
#endif
hListenSocket = socket(nFamily, SOCK_STREAM, IPPROTO_TCP);
if (hListenSocket == INVALID_SOCKET)
{
strError = strprintf("Error: Couldn't open socket for incoming connections (socket returned error %d)", WSAGetLastError());
@@ -1669,22 +1679,36 @@ bool BindListenPort(string& strError)
// The sockaddr_in structure specifies the address family,
// IP address, and port for the socket that is being bound
struct sockaddr_in sockaddr;
#ifdef USE_IPV6
struct sockaddr_in6 sockaddr = sockaddr_in6();
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin6_family = AF_INET6;
sockaddr.sin6_addr = in6addr_any; // bind to all IPs on this computer
sockaddr.sin6_port = htons(nPort);
# ifdef WIN32
int nProtLevel = 10 /* PROTECTION_LEVEL_UNRESTRICTED */;
int nParameterId = 23 /* IPV6_PROTECTION_LEVEl */;
// this call is allowed to fail
setsockopt(hListenSocket, IPPROTO_IPV6, nParameterId, (const char*)&nProtLevel, sizeof(int));
# endif
#else
struct sockaddr_in sockaddr = sockaddr_in();
memset(&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
sockaddr.sin_addr.s_addr = INADDR_ANY; // bind to all IPs on this computer
sockaddr.sin_port = htons(GetListenPort());
sockaddr.sin_port = htons(nPort);
#endif
if (::bind(hListenSocket, (struct sockaddr*)&sockaddr, sizeof(sockaddr)) == SOCKET_ERROR)
{
int nErr = WSAGetLastError();
if (nErr == WSAEADDRINUSE)
strError = strprintf(_("Unable to bind to port %d on this computer. Bitcoin is probably already running."), ntohs(sockaddr.sin_port));
strError = strprintf(_("Unable to bind to port %d on this computer. Bitcoin is probably already running."), nPort);
else
strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d)", ntohs(sockaddr.sin_port), nErr);
strError = strprintf("Error: Unable to bind to port %d on this computer (bind returned error %d, %s)", nPort, nErr, strerror(nErr));
printf("%s\n", strError.c_str());
return false;
}
printf("Bound to port %d\n", ntohs(sockaddr.sin_port));
printf("Bound to port %d\n", (int)nPort);
// Listen for incoming connections
if (listen(hListenSocket, SOMAXCONN) == SOCKET_ERROR)
@@ -1727,28 +1751,22 @@ void static Discover()
if ((ifa->ifa_flags & IFF_UP) == 0) continue;
if (strcmp(ifa->ifa_name, "lo") == 0) continue;
if (strcmp(ifa->ifa_name, "lo0") == 0) continue;
char pszIP[100];
if (ifa->ifa_addr->sa_family == AF_INET)
{
struct sockaddr_in* s4 = (struct sockaddr_in*)(ifa->ifa_addr);
if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s4->sin_addr), pszIP, sizeof(pszIP)) != NULL)
printf("ipv4 %s: %s\n", ifa->ifa_name, pszIP);
// Take the first IP that isn't loopback 127.x.x.x
CNetAddr addr(s4->sin_addr);
AddLocal(addr, LOCAL_IF);
if (AddLocal(addr, LOCAL_IF))
printf("ipv4 %s: %s\n", ifa->ifa_name, addr.ToString().c_str());
}
#ifdef USE_IPV6
else if (ifa->ifa_addr->sa_family == AF_INET6)
{
struct sockaddr_in6* s6 = (struct sockaddr_in6*)(ifa->ifa_addr);
if (inet_ntop(ifa->ifa_addr->sa_family, (void*)&(s6->sin6_addr), pszIP, sizeof(pszIP)) != NULL)
printf("ipv6 %s: %s\n", ifa->ifa_name, pszIP);
#ifdef USE_IPV6
CNetAddr addr(s6->sin6_addr);
AddLocal(addr, LOCAL_IF);
#endif
if (AddLocal(addr, LOCAL_IF))
printf("ipv6 %s: %s\n", ifa->ifa_name, addr.ToString().c_str());
}
#endif
}
freeifaddrs(myaddrs);
}