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Add some proxy debugging, and auto-resolve and periodically re-resolve TCP fallback tunnel hostname.

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This commit is contained in:
Adam Ierymenko 2015-05-21 15:22:41 -07:00
parent 61021fc778
commit 0f7dcb3ef2
3 changed files with 39 additions and 5 deletions
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28
service/OneService.cpp
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@ -53,6 +53,7 @@
#include "../osdep/Thread.hpp"
#include "../osdep/OSUtils.hpp"
#include "../osdep/Http.hpp"
#include "../osdep/BackgroundResolver.hpp"
#include "OneService.hpp"
#include "ControlPlane.hpp"
@ -102,6 +103,12 @@ namespace ZeroTier { typedef BSDEthernetTap EthernetTap; }
// Path under ZT1 home for controller database if controller is enabled
#define ZT1_CONTROLLER_DB_PATH "controller.db"
// TCP fallback relay host
#define ZT1_TCP_FALLBACK_RELAY "tcp-fallback.zerotier.com"
// Frequency at which we re-resolve the TCP fallback relay
#define ZT1_TCP_FALLBACK_RERESOLVE_DELAY 86400000
namespace ZeroTier {
namespace {
@ -365,6 +372,7 @@ class OneServiceImpl : public OneService
public:
OneServiceImpl(const char *hp,unsigned int port,const char *overrideRootTopology) :
_homePath((hp) ? hp : "."),
_tcpFallbackResolver(ZT1_TCP_FALLBACK_RELAY),
#ifdef ZT_ENABLE_NETWORK_CONTROLLER
_controller((_homePath + ZT_PATH_SEPARATOR_S + ZT1_CONTROLLER_DB_PATH).c_str()),
#endif
@ -467,6 +475,7 @@ public:
_nextBackgroundTaskDeadline = 0;
uint64_t lastTapMulticastGroupCheck = 0;
uint64_t lastTcpFallbackResolve = 0;
#ifdef ZT_AUTO_UPDATE
uint64_t lastSoftwareUpdateCheck = 0;
#endif // ZT_AUTO_UPDATE
@ -494,6 +503,11 @@ public:
}
#endif // ZT_AUTO_UPDATE
if ((now - lastTcpFallbackResolve) >= ZT1_TCP_FALLBACK_RERESOLVE_DELAY) {
lastTcpFallbackResolve = now;
_tcpFallbackResolver.resolveNow();
}
if ((now - lastTapMulticastGroupCheck) >= ZT_TAP_CHECK_MULTICAST_INTERVAL) {
lastTapMulticastGroupCheck = now;
Mutex::Lock _l(_taps_m);
@ -595,7 +609,8 @@ public:
if (!success)
return;
// Outgoing connections are right now only tunnel connections
// Outgoing TCP connections are always TCP fallback tunnel connections.
TcpConnection *tc = &(_tcpConections[sock]);
tc->type = TcpConnection::TCP_TUNNEL_OUTGOING;
tc->shouldKeepAlive = true; // unused
@ -623,7 +638,8 @@ public:
inline void phyOnTcpAccept(PhySocket *sockL,PhySocket *sockN,void **uptrL,void **uptrN,const struct sockaddr *from)
{
// Incoming connections are TCP HTTP requests
// Incoming TCP connections are HTTP JSON API requests.
TcpConnection *tc = &(_tcpConections[sockN]);
tc->type = TcpConnection::TCP_HTTP_INCOMING;
tc->shouldKeepAlive = true;
@ -653,6 +669,7 @@ public:
{
TcpConnection *tc = reinterpret_cast<TcpConnection *>(*uptr);
switch(tc->type) {
case TcpConnection::TCP_HTTP_INCOMING:
case TcpConnection::TCP_HTTP_OUTGOING:
http_parser_execute(&(tc->parser),&HTTP_PARSER_SETTINGS,(const char *)data,len);
@ -661,6 +678,7 @@ public:
return;
}
break;
case TcpConnection::TCP_TUNNEL_OUTGOING:
tc->body.append((const char *)data,len);
if (tc->body.length() > 65535) {
@ -727,12 +745,14 @@ public:
return;
}
}
if (tc->body.length() > (mlen + 5))
tc->body = tc->body.substr(mlen + 5);
else tc->body = "";
}
}
break;
}
}
@ -829,9 +849,6 @@ public:
this->terminate();
} break;
case ZT1_EVENT_SAW_MORE_RECENT_VERSION: {
} break;
case ZT1_EVENT_TRACE: {
if (metaData) {
::fprintf(stderr,"%s"ZT_EOL_S,(const char *)metaData);
@ -994,6 +1011,7 @@ private:
}
const std::string _homePath;
BackgroundResolver _tcpFallbackResolver;
#ifdef ZT_ENABLE_NETWORK_CONTROLLER
SqliteNetworkController _controller;
#endif