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Some new stuff, may not live forever...
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Adam Ierymenko
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162
attic/MTUDPSocket.hpp
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162
attic/MTUDPSocket.hpp
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/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* You can be released from the requirements of the license by purchasing
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* a commercial license. Buying such a license is mandatory as soon as you
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* develop commercial closed-source software that incorporates or links
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* directly against ZeroTier software without disclosing the source code
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* of your own application.
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*/
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#ifndef ZT_MTUDPSOCKET_HPP
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#define ZT_MTUDPSOCKET_HPP
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#ifndef __WINDOWS__
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#include "../node/Constants.hpp"
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#include "../include/ZeroTierOne.h"
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#include "../osdep/OSUtils.hpp"
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#include "../osdep/Thread.hpp"
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#include <vector>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <unistd.h>
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namespace ZeroTier {
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/**
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* MTUDPSocket is a multithreaded UDP socket using multiple binds and SO_REUSEPORT
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*
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* On Mac and Linux this is the most efficient way to implement a multithreaded UDP
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* I/O path. On Windows it's probably not necessary to optimize this much. If it ever
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* is, we will have to implement a version of this the Windows way.
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*/
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class MTUDPSocket
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{
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public:
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inline MTUDPSocket(ZT_Node *n,volatile int64_t *dptr,const struct sockaddr *bindAddr)
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{
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const int ncores = std::max(1,(int)sysconf(_SC_NPROCESSORS_CONF));
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for(int t=0;t<ncores;t++) {
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int s = socket(bindAddr->sa_family,SOCK_DGRAM,0);
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if (s < 0) {
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for(auto i=_sockets.begin();i!=_sockets.end();++i)
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close(*i);
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throw std::runtime_error("unable to allocate socket");
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}
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int f = 131072;
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setsockopt(s,SOL_SOCKET,SO_RCVBUF,(const char *)&f,sizeof(f));
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f = 131072;
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setsockopt(s,SOL_SOCKET,SO_SNDBUF,(const char *)&f,sizeof(f));
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if (bindAddr->sa_family == AF_INET6) {
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f = 1; setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void *)&f,sizeof(f));
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#ifdef IPV6_MTU_DISCOVER
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f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_MTU_DISCOVER,&f,sizeof(f));
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#endif
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#ifdef IPV6_DONTFRAG
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f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_DONTFRAG,&f,sizeof(f));
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#endif
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}
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f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(void *)&f,sizeof(f));
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f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEPORT,(void *)&f,sizeof(f));
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f = 1; setsockopt(s,SOL_SOCKET,SO_BROADCAST,(void *)&f,sizeof(f));
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#ifdef IP_DONTFRAG
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f = 0; setsockopt(s,IPPROTO_IP,IP_DONTFRAG,&f,sizeof(f));
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#endif
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#ifdef IP_MTU_DISCOVER
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f = 0; setsockopt(s,IPPROTO_IP,IP_MTU_DISCOVER,&f,sizeof(f));
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#endif
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#ifdef SO_NO_CHECK
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if (bindAddr->sa_family == AF_INET) {
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f = 1; setsockopt(s,SOL_SOCKET,SO_NO_CHECK,(void *)&f,sizeof(f));
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}
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#endif
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if (bind(s,bindAddr,(bindAddr->sa_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6))) {
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for(auto i=_sockets.begin();i!=_sockets.end();++i)
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close(*i);
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throw std::runtime_error("unable to bind to address");
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}
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_sockets.push_back(s);
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}
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for(auto s=_sockets.begin();s!=_sockets.end();++s) {
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try {
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new MTUDPThread(n,dptr,*s);
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} catch ( ... ) {
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for(auto i=_sockets.begin();i!=_sockets.end();++i)
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close(*i);
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throw;
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}
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}
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}
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inline ~MTUDPSocket()
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{
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for(auto i=_sockets.begin();i!=_sockets.end();++i)
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close(*i);
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}
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private:
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class MTUDPThread
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{
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public:
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inline MTUDPThread(ZT_Node *n,volatile int64_t *dptr,int s) :
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node(n),
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deadlinePtr(dptr),
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sock(s),
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thread(Thread::start(this))
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{
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}
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inline void threadMain()
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{
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struct sockaddr_storage from;
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for(;;) {
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socklen_t fromLen = sizeof(from);
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const int nr = recvfrom(this->sock,this->buf,sizeof(this->buf),0,(struct sockaddr *)&from,&fromLen);
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if (nr > 0) {
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ZT_Node_processWirePacket(this->node,nullptr,OSUtils::now(),(int64_t)this->sock,&from,this->buf,(unsigned int)nr,this->deadlinePtr);
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} else {
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close(this->sock);
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break;
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}
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}
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delete this; // closing the socket causes this to exit and delete itself
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}
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ZT_Node *const node;
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volatile int64_t *const deadlinePtr;
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const int sock;
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Thread thread;
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char buf[10000];
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};
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std::vector<int> _sockets;
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};
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} // namespace ZeroTier
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#endif // !__WINDOWS__
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#endif
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@ -61,6 +61,7 @@
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#include <sys/un.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#if defined(__linux__) || defined(linux) || defined(__LINUX__) || defined(__linux)
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158
root.cpp
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158
root.cpp
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@ -0,0 +1,158 @@
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/*
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* ZeroTier One - Network Virtualization Everywhere
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* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* --
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*
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* You can be released from the requirements of the license by purchasing
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* a commercial license. Buying such a license is mandatory as soon as you
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* develop commercial closed-source software that incorporates or links
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* directly against ZeroTier software without disclosing the source code
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* of your own application.
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*/
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#include "node/Constants.hpp"
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/select.h>
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#include <sys/time.h>
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#include <sys/un.h>
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#include <sys/ioctl.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#include <string>
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#include <thread>
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#include <map>
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#include <vector>
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#include <iostream>
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#include "include/ZeroTierOne.h"
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static int bindSocket(struct sockaddr *bindAddr)
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{
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int s = socket(bindAddr->sa_family,SOCK_DGRAM,0);
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if (s < 0) {
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close(s);
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return -1;
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}
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int f = 131072;
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setsockopt(s,SOL_SOCKET,SO_RCVBUF,(const char *)&f,sizeof(f));
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f = 131072;
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setsockopt(s,SOL_SOCKET,SO_SNDBUF,(const char *)&f,sizeof(f));
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if (bindAddr->sa_family == AF_INET6) {
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f = 1; setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void *)&f,sizeof(f));
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#ifdef IPV6_MTU_DISCOVER
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f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_MTU_DISCOVER,&f,sizeof(f));
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#endif
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#ifdef IPV6_DONTFRAG
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f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_DONTFRAG,&f,sizeof(f));
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#endif
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}
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f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(void *)&f,sizeof(f));
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f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEPORT,(void *)&f,sizeof(f));
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f = 1; setsockopt(s,SOL_SOCKET,SO_BROADCAST,(void *)&f,sizeof(f));
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#ifdef IP_DONTFRAG
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f = 0; setsockopt(s,IPPROTO_IP,IP_DONTFRAG,&f,sizeof(f));
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#endif
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#ifdef IP_MTU_DISCOVER
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f = IP_PMTUDISC_DONT; setsockopt(s,IPPROTO_IP,IP_MTU_DISCOVER,&f,sizeof(f));
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#endif
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#ifdef SO_NO_CHECK
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if (bindAddr->sa_family == AF_INET) {
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f = 1; setsockopt(s,SOL_SOCKET,SO_NO_CHECK,(void *)&f,sizeof(f));
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}
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#endif
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if (bind(s,bindAddr,(bindAddr->sa_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6))) {
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close(s);
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return -1;
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}
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return s;
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}
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int main(int argc,char **argv)
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{
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unsigned int ncores = std::thread::hardware_concurrency();
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if (ncores == 0) ncores = 1;
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std::vector<int> sockets;
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std::vector<std::thread> threads;
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for(unsigned int tn=0;tn<ncores;++tn) {
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struct sockaddr_in6 in6;
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memset(&in6,0,sizeof(in6));
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in6.sin6_family = AF_INET6;
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in6.sin6_port = htons(ZT_DEFAULT_PORT);
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const int s6 = bindSocket((struct sockaddr *)&in6);
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if (s6 < 0) {
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std::cout << "ERROR: unable to bind to port " << ZT_DEFAULT_PORT << ZT_EOL_S;
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exit(1);
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}
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struct sockaddr_in in4;
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memset(&in4,0,sizeof(in4));
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in4.sin_family = AF_INET;
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in4.sin_port = htons(ZT_DEFAULT_PORT);
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const int s4 = bindSocket((struct sockaddr *)&in4);
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if (s4 < 0) {
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std::cout << "ERROR: unable to bind to port " << ZT_DEFAULT_PORT << ZT_EOL_S;
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exit(1);
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}
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sockets.push_back(s6);
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sockets.push_back(s4);
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threads.push_back(std::thread([s6]() {
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struct sockaddr_in6 in6;
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char buf[10000];
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memset(&in6,0,sizeof(in6));
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for(;;) {
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socklen_t sl = sizeof(in6);
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const int pl = (int)recvfrom(s6,buf,sizeof(buf),0,(struct sockaddr *)&in6,&sl);
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if (pl > 0) {
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} else break;
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}
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}));
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threads.push_back(std::thread([s4]() {
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struct sockaddr_in in4;
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char buf[10000];
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memset(&in4,0,sizeof(in4));
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for(;;) {
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socklen_t sl = sizeof(in4);
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const int pl = (int)recvfrom(s4,buf,sizeof(buf),0,(struct sockaddr *)&in4,&sl);
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if (pl > 0) {
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} else break;
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}
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}));
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}
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return 0;
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}
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