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Some new stuff, may not live forever...

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This commit is contained in:
Adam Ierymenko 2019-07-15 13:57:42 -05:00
parent d3728d5859
commit 9d908a11ed
3 changed files with 321 additions and 0 deletions
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162
attic/MTUDPSocket.hpp Normal file
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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial closed-source software that incorporates or links
* directly against ZeroTier software without disclosing the source code
* of your own application.
*/
#ifndef ZT_MTUDPSOCKET_HPP
#define ZT_MTUDPSOCKET_HPP
#ifndef __WINDOWS__
#include "../node/Constants.hpp"
#include "../include/ZeroTierOne.h"
#include "../osdep/OSUtils.hpp"
#include "../osdep/Thread.hpp"
#include <vector>
#include <sys/types.h>
#include <sys/socket.h>
#include <unistd.h>
namespace ZeroTier {
/**
* MTUDPSocket is a multithreaded UDP socket using multiple binds and SO_REUSEPORT
*
* On Mac and Linux this is the most efficient way to implement a multithreaded UDP
* I/O path. On Windows it's probably not necessary to optimize this much. If it ever
* is, we will have to implement a version of this the Windows way.
*/
class MTUDPSocket
{
public:
inline MTUDPSocket(ZT_Node *n,volatile int64_t *dptr,const struct sockaddr *bindAddr)
{
const int ncores = std::max(1,(int)sysconf(_SC_NPROCESSORS_CONF));
for(int t=0;t<ncores;t++) {
int s = socket(bindAddr->sa_family,SOCK_DGRAM,0);
if (s < 0) {
for(auto i=_sockets.begin();i!=_sockets.end();++i)
close(*i);
throw std::runtime_error("unable to allocate socket");
}
int f = 131072;
setsockopt(s,SOL_SOCKET,SO_RCVBUF,(const char *)&f,sizeof(f));
f = 131072;
setsockopt(s,SOL_SOCKET,SO_SNDBUF,(const char *)&f,sizeof(f));
if (bindAddr->sa_family == AF_INET6) {
f = 1; setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void *)&f,sizeof(f));
#ifdef IPV6_MTU_DISCOVER
f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_MTU_DISCOVER,&f,sizeof(f));
#endif
#ifdef IPV6_DONTFRAG
f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_DONTFRAG,&f,sizeof(f));
#endif
}
f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(void *)&f,sizeof(f));
f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEPORT,(void *)&f,sizeof(f));
f = 1; setsockopt(s,SOL_SOCKET,SO_BROADCAST,(void *)&f,sizeof(f));
#ifdef IP_DONTFRAG
f = 0; setsockopt(s,IPPROTO_IP,IP_DONTFRAG,&f,sizeof(f));
#endif
#ifdef IP_MTU_DISCOVER
f = 0; setsockopt(s,IPPROTO_IP,IP_MTU_DISCOVER,&f,sizeof(f));
#endif
#ifdef SO_NO_CHECK
if (bindAddr->sa_family == AF_INET) {
f = 1; setsockopt(s,SOL_SOCKET,SO_NO_CHECK,(void *)&f,sizeof(f));
}
#endif
if (bind(s,bindAddr,(bindAddr->sa_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6))) {
for(auto i=_sockets.begin();i!=_sockets.end();++i)
close(*i);
throw std::runtime_error("unable to bind to address");
}
_sockets.push_back(s);
}
for(auto s=_sockets.begin();s!=_sockets.end();++s) {
try {
new MTUDPThread(n,dptr,*s);
} catch ( ... ) {
for(auto i=_sockets.begin();i!=_sockets.end();++i)
close(*i);
throw;
}
}
}
inline ~MTUDPSocket()
{
for(auto i=_sockets.begin();i!=_sockets.end();++i)
close(*i);
}
private:
class MTUDPThread
{
public:
inline MTUDPThread(ZT_Node *n,volatile int64_t *dptr,int s) :
node(n),
deadlinePtr(dptr),
sock(s),
thread(Thread::start(this))
{
}
inline void threadMain()
{
struct sockaddr_storage from;
for(;;) {
socklen_t fromLen = sizeof(from);
const int nr = recvfrom(this->sock,this->buf,sizeof(this->buf),0,(struct sockaddr *)&from,&fromLen);
if (nr > 0) {
ZT_Node_processWirePacket(this->node,nullptr,OSUtils::now(),(int64_t)this->sock,&from,this->buf,(unsigned int)nr,this->deadlinePtr);
} else {
close(this->sock);
break;
}
}
delete this; // closing the socket causes this to exit and delete itself
}
ZT_Node *const node;
volatile int64_t *const deadlinePtr;
const int sock;
Thread thread;
char buf[10000];
};
std::vector<int> _sockets;
};
} // namespace ZeroTier
#endif // !__WINDOWS__
#endif

1
osdep/Phy.hpp
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#include <sys/un.h> #include <sys/un.h>
#include <arpa/inet.h> #include <arpa/inet.h>
#include <netinet/in.h> #include <netinet/in.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h> #include <netinet/tcp.h>
#if defined(__linux__) || defined(linux) || defined(__LINUX__) || defined(__linux) #if defined(__linux__) || defined(linux) || defined(__LINUX__) || defined(__linux)

158
root.cpp Normal file
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/*
* ZeroTier One - Network Virtualization Everywhere
* Copyright (C) 2011-2019 ZeroTier, Inc. https://www.zerotier.com/
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* --
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial closed-source software that incorporates or links
* directly against ZeroTier software without disclosing the source code
* of your own application.
*/
#include "node/Constants.hpp"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/un.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>
#include <netinet/tcp.h>
#include <string>
#include <thread>
#include <map>
#include <vector>
#include <iostream>
#include "include/ZeroTierOne.h"
static int bindSocket(struct sockaddr *bindAddr)
{
int s = socket(bindAddr->sa_family,SOCK_DGRAM,0);
if (s < 0) {
close(s);
return -1;
}
int f = 131072;
setsockopt(s,SOL_SOCKET,SO_RCVBUF,(const char *)&f,sizeof(f));
f = 131072;
setsockopt(s,SOL_SOCKET,SO_SNDBUF,(const char *)&f,sizeof(f));
if (bindAddr->sa_family == AF_INET6) {
f = 1; setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void *)&f,sizeof(f));
#ifdef IPV6_MTU_DISCOVER
f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_MTU_DISCOVER,&f,sizeof(f));
#endif
#ifdef IPV6_DONTFRAG
f = 0; setsockopt(s,IPPROTO_IPV6,IPV6_DONTFRAG,&f,sizeof(f));
#endif
}
f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(void *)&f,sizeof(f));
f = 1; setsockopt(s,SOL_SOCKET,SO_REUSEPORT,(void *)&f,sizeof(f));
f = 1; setsockopt(s,SOL_SOCKET,SO_BROADCAST,(void *)&f,sizeof(f));
#ifdef IP_DONTFRAG
f = 0; setsockopt(s,IPPROTO_IP,IP_DONTFRAG,&f,sizeof(f));
#endif
#ifdef IP_MTU_DISCOVER
f = IP_PMTUDISC_DONT; setsockopt(s,IPPROTO_IP,IP_MTU_DISCOVER,&f,sizeof(f));
#endif
#ifdef SO_NO_CHECK
if (bindAddr->sa_family == AF_INET) {
f = 1; setsockopt(s,SOL_SOCKET,SO_NO_CHECK,(void *)&f,sizeof(f));
}
#endif
if (bind(s,bindAddr,(bindAddr->sa_family == AF_INET) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6))) {
close(s);
return -1;
}
return s;
}
int main(int argc,char **argv)
{
unsigned int ncores = std::thread::hardware_concurrency();
if (ncores == 0) ncores = 1;
std::vector<int> sockets;
std::vector<std::thread> threads;
for(unsigned int tn=0;tn<ncores;++tn) {
struct sockaddr_in6 in6;
memset(&in6,0,sizeof(in6));
in6.sin6_family = AF_INET6;
in6.sin6_port = htons(ZT_DEFAULT_PORT);
const int s6 = bindSocket((struct sockaddr *)&in6);
if (s6 < 0) {
std::cout << "ERROR: unable to bind to port " << ZT_DEFAULT_PORT << ZT_EOL_S;
exit(1);
}
struct sockaddr_in in4;
memset(&in4,0,sizeof(in4));
in4.sin_family = AF_INET;
in4.sin_port = htons(ZT_DEFAULT_PORT);
const int s4 = bindSocket((struct sockaddr *)&in4);
if (s4 < 0) {
std::cout << "ERROR: unable to bind to port " << ZT_DEFAULT_PORT << ZT_EOL_S;
exit(1);
}
sockets.push_back(s6);
sockets.push_back(s4);
threads.push_back(std::thread([s6]() {
struct sockaddr_in6 in6;
char buf[10000];
memset(&in6,0,sizeof(in6));
for(;;) {
socklen_t sl = sizeof(in6);
const int pl = (int)recvfrom(s6,buf,sizeof(buf),0,(struct sockaddr *)&in6,&sl);
if (pl > 0) {
} else break;
}
}));
threads.push_back(std::thread([s4]() {
struct sockaddr_in in4;
char buf[10000];
memset(&in4,0,sizeof(in4));
for(;;) {
socklen_t sl = sizeof(in4);
const int pl = (int)recvfrom(s4,buf,sizeof(buf),0,(struct sockaddr *)&in4,&sl);
if (pl > 0) {
} else break;
}
}));
}
return 0;
}