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Merge PR #150: Workaround zeroconf breaking because of broken multicast hardware

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This commit is contained in:
Jenkins 2019-04-12 13:42:30 +02:00
commit 0434ad22d2
8 changed files with 81 additions and 28 deletions
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79
libnymea-core/hardware/network/avahi/qtavahiservice.cpp
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@ -1,6 +1,7 @@
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* Copyright (C) 2016 Simon Stürz <simon.stuerz@guh.io> *
* Copyright (C) 2019 Michael Zanetti <michael.zanetti@nymea.io> *
* *
* This file is part of nymea. *
* *
@ -53,6 +54,7 @@
#include "loggingcategories.h"
#include <QNetworkInterface>
#include <QUuid>
namespace nymeaserver {
@ -60,12 +62,20 @@ namespace nymeaserver {
QtAvahiService::QtAvahiService(QObject *parent) :
QObject(parent),
d_ptr(new QtAvahiServicePrivate),
m_state(QtAvahiServiceStateUncomitted)
m_state(QtAvahiServiceStateUncommitted)
{
connect(this, &QtAvahiService::serviceStateChanged, this, &QtAvahiService::onStateChanged);
d_ptr->client = new QtAvahiClient(this);
d_ptr->client->start();
m_reregisterTimer.setInterval(60000);
m_reregisterTimer.setSingleShot(true);
connect(&m_reregisterTimer, &QTimer::timeout, this, [this](){
qCDebug(dcAvahiDebug()) << "Re-registering service" << this;
resetService(true);
registerService(m_name, m_hostAddress, m_port, m_serviceType, m_txtRecords, true);
});
}
/*! Destructs this \l{QtAvahiService}. */
@ -116,7 +126,7 @@ QtAvahiService::QtAvahiServiceState QtAvahiService::state() const
}
/*! Register a new \l{QtAvahiService} with the given \a name and \a port. The service type can be specified with the \a serviceType string. The \a txtRecords records inform about additional information. Returns true if the service could be registered. */
bool QtAvahiService::registerService(const QString &name, const QHostAddress &hostAddress, const quint16 &port, const QString &serviceType, const QHash<QString, QString> &txtRecords)
bool QtAvahiService::registerService(const QString &name, const QHostAddress &hostAddress, const quint16 &port, const QString &serviceType, const QHash<QString, QString> &txtRecords, bool silent)
{
// Check if the client is running
if (!d_ptr->client->m_client || AVAHI_CLIENT_S_RUNNING != avahi_client_get_state(d_ptr->client->m_client)) {
@ -124,6 +134,14 @@ bool QtAvahiService::registerService(const QString &name, const QHostAddress &ho
return false;
}
// Cache all values locally at first
m_name = name;
m_hostAddress = hostAddress;
m_port = port;
m_serviceType = serviceType;
m_txtRecords = txtRecords;
// Now set up avahi
d_ptr->name = name;
d_ptr->hostAddress = hostAddress;
d_ptr->port = port;
@ -149,7 +167,8 @@ bool QtAvahiService::registerService(const QString &name, const QHostAddress &ho
}
}
}
qCDebug(dcAvahi()) << "Registering avahi service" << name << hostAddress.toString() << port << serviceType << "on interface" << ifIndex;
qCDebug((silent ? dcAvahiDebug() : dcAvahi())) << "Registering avahi service" << name << hostAddress.toString() << port << serviceType << "on interface" << ifIndex;
d_ptr->serviceList = QtAvahiServicePrivate::createTxtList(txtRecords);
d_ptr->error = avahi_entry_group_add_service_strlst(d_ptr->group,
@ -167,7 +186,7 @@ bool QtAvahiService::registerService(const QString &name, const QHostAddress &ho
if (d_ptr->error) {
if (d_ptr->error == AVAHI_ERR_COLLISION) {
if (!handlCollision()) {
if (!handleCollision()) {
qCWarning(dcAvahi()) << this << "error:" << avahi_strerror(d_ptr->error);
return false;
}
@ -190,20 +209,29 @@ bool QtAvahiService::registerService(const QString &name, const QHostAddress &ho
return false;
}
// Reregister every minute in order to work around low quality network hardware which
// doesn't properly keep multicast sessions alive.
// https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=736641
m_reregisterTimer.start();
return true;
}
/*! Remove this service from the local network. This \l{QtAvahiService} can be reused to register a new avahi service. */
void QtAvahiService::resetService()
void QtAvahiService::resetService(bool silent)
{
if (!d_ptr->group)
if (!d_ptr->group) {
qCWarning(dcAvahi()) << "Cannot unregister service. Service Group not existing.";
return;
}
qCDebug((silent ? dcAvahiDebug() : dcAvahi())) << "Unregistering service" << this;
if (d_ptr->serviceList) {
avahi_string_list_free(d_ptr->serviceList);
d_ptr->serviceList = nullptr;
}
avahi_entry_group_reset(d_ptr->group);
m_reregisterTimer.stop();
}
/*! Update the TXT record of this service. Returns true of the record could be updated. */
@ -212,11 +240,26 @@ bool QtAvahiService::updateTxtRecord(const QHash<QString, QString> &txtRecords)
if (!d_ptr->group)
return false;
m_txtRecords = txtRecords;
// Add the service
AvahiIfIndex ifIndex = AVAHI_IF_UNSPEC;
if (d_ptr->hostAddress != QHostAddress("0.0.0.0")) {
foreach (const QNetworkInterface &interface, QNetworkInterface::allInterfaces()) {
foreach (const QNetworkAddressEntry &addressEntry, interface.addressEntries()) {
QPair<QHostAddress, int> subnet = QHostAddress::parseSubnet(addressEntry.ip().toString() + "/" + addressEntry.netmask().toString());
if (d_ptr->hostAddress.isInSubnet(subnet.first, subnet.second)) {
ifIndex = interface.index();
break;
}
}
}
}
d_ptr->serviceList = QtAvahiServicePrivate::createTxtList(txtRecords);
d_ptr->error = avahi_entry_group_update_service_txt_strlst(d_ptr->group,
AVAHI_IF_UNSPEC,
AVAHI_PROTO_INET,
ifIndex,
d_ptr->hostAddress.protocol() == QAbstractSocket::IPv6Protocol ? AVAHI_PROTO_INET6 : AVAHI_PROTO_INET,
(AvahiPublishFlags) 0,
d_ptr->name.toLatin1().data(),
d_ptr->type.toLatin1().data(),
@ -249,12 +292,12 @@ QString QtAvahiService::errorString() const
return avahi_strerror(avahi_client_errno(d_ptr->client->m_client));
}
bool QtAvahiService::handlCollision()
bool QtAvahiService::handleCollision()
{
char* alt = avahi_alternative_service_name(name().toStdString().data());
QString alternativeServiceName = QLatin1String(alt);
free(alt);
qCDebug(dcAvahi()) << "Service name colision. Picking alternative service name" << alternativeServiceName;
qCDebug(dcAvahi()) << "Service name collision. Picking alternative service name" << alternativeServiceName;
resetService();
return registerService(alternativeServiceName, hostAddress(), port(), serviceType(), txtRecords());
@ -268,23 +311,21 @@ void QtAvahiService::onStateChanged(const QtAvahiServiceState &state)
m_state = state;
switch (m_state) {
case QtAvahiServiceStateUncomitted:
qCDebug(dcAvahi()) << this << "state changed: uncomitted";
case QtAvahiServiceStateUncommitted:
qCDebug(dcAvahiDebug()) << "Service state changed to Uncommitted:" << this;
break;
case QtAvahiServiceStateRegistering:
qCDebug(dcAvahi()) << this << "state changed: registering...";
qCDebug(dcAvahiDebug()) << "Service state changed to Registering:" << this;
break;
case QtAvahiServiceStateEstablished:
qCDebug(dcAvahi()) << this << "state changed: established";
qCDebug(dcAvahiDebug()) << "Service state changed to Established:" << this;
break;
case QtAvahiServiceStateCollision:
qCDebug(dcAvahi()) << this << "state changed: collision";
handlCollision();
qCDebug(dcAvahiDebug()) << "Service state changed to Collision:" << this;
handleCollision();
break;
case QtAvahiServiceStateFailure:
qCWarning(dcAvahi()) << this << "failure: " << errorString();
break;
default:
qCDebug(dcAvahiDebug()) << "Service state changed to Failure:" << this;
break;
}

17
libnymea-core/hardware/network/avahi/qtavahiservice.h
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@ -1,6 +1,7 @@
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* *
* Copyright (C) 2016 Simon Stürz <simon.stuerz@guh.io> *
* Copyright (C) 2019 Michael Zanetti <michael.zanetti@nymea.io> *
* *
* This file is part of nymea. *
* *
@ -27,6 +28,7 @@
#include <QString>
#include <QObject>
#include <QHostAddress>
#include <QTimer>
namespace nymeaserver {
@ -38,7 +40,7 @@ class QtAvahiService : public QObject
public:
enum QtAvahiServiceState {
QtAvahiServiceStateUncomitted = 0,
QtAvahiServiceStateUncommitted = 0,
QtAvahiServiceStateRegistering = 1,
QtAvahiServiceStateEstablished = 2,
QtAvahiServiceStateCollision = 3,
@ -56,8 +58,8 @@ public:
QHash<QString, QString> txtRecords() const;
QtAvahiServiceState state() const;
bool registerService(const QString &name, const QHostAddress &hostAddress, const quint16 &port, const QString &serviceType = "_http._tcp", const QHash<QString, QString> &txtRecords = QHash<QString, QString>());
void resetService();
bool registerService(const QString &name, const QHostAddress &hostAddress, const quint16 &port, const QString &serviceType = "_http._tcp", const QHash<QString, QString> &txtRecords = QHash<QString, QString>(), bool silent = false);
void resetService(bool silent = false);
bool updateTxtRecord(const QHash<QString, QString> &txtRecords);
@ -71,13 +73,20 @@ protected:
QtAvahiServicePrivate *d_ptr;
private slots:
bool handlCollision();
bool handleCollision();
void onStateChanged(const QtAvahiServiceState &state);
private:
QtAvahiServiceState m_state;
Q_DECLARE_PRIVATE(QtAvahiService)
QTimer m_reregisterTimer;
QString m_name;
QHostAddress m_hostAddress;
quint16 m_port;
QString m_serviceType;
QHash<QString, QString> m_txtRecords;
};
QDebug operator <<(QDebug dbg, QtAvahiService *service);

4
libnymea-core/hardware/network/avahi/qtavahiservice_p.cpp
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@ -50,7 +50,7 @@ void QtAvahiServicePrivate::callback(AvahiEntryGroup *group, AvahiEntryGroupStat
switch (state) {
case AVAHI_ENTRY_GROUP_UNCOMMITED:
emit service->serviceStateChanged(QtAvahiService::QtAvahiServiceStateUncomitted);
emit service->serviceStateChanged(QtAvahiService::QtAvahiServiceStateUncommitted);
break;
case AVAHI_ENTRY_GROUP_REGISTERING:
emit service->serviceStateChanged(QtAvahiService::QtAvahiServiceStateRegistering);
@ -69,7 +69,7 @@ void QtAvahiServicePrivate::callback(AvahiEntryGroup *group, AvahiEntryGroupStat
AvahiStringList *QtAvahiServicePrivate::createTxtList(const QHash<QString, QString> &txt)
{
AvahiStringList *list = NULL;
AvahiStringList *list = nullptr;
if (txt.isEmpty())
return list;

4
libnymea-core/hardware/network/avahi/qtavahiservicebrowserimplementation.cpp
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@ -46,7 +46,7 @@ QtAvahiServiceBrowserImplementation::QtAvahiServiceBrowserImplementation(QObject
connect(d_ptr->client, &QtAvahiClient::clientStateChanged, this, &QtAvahiServiceBrowserImplementation::onClientStateChanged);
qCDebug(dcAvahi()) << "-->" << name() << "created successfully.";
qCDebug(dcAvahiDebug()) << "-->" << name() << "created successfully.";
}
/*! Destructs this \l{QtAvahiServiceBrowserImplementation}. */
@ -86,7 +86,7 @@ bool QtAvahiServiceBrowserImplementation::enabled() const
void QtAvahiServiceBrowserImplementation::onClientStateChanged(const QtAvahiClient::QtAvahiClientState &state)
{
if (state == QtAvahiClient::QtAvahiClientStateRunning) {
qCDebug(dcAvahi()) << "Service browser client connected.";
qCDebug(dcAvahiDebug()) << "Service browser client connected.";
// Return if we already have a service type browser
if (d_ptr->serviceTypeBrowser)
return;

2
libnymea-core/hardware/network/avahi/qtavahiservicebrowserimplementation_p.cpp
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@ -60,7 +60,7 @@ void QtAvahiServiceBrowserImplementationPrivate::callbackServiceTypeBrowser(Avah
case AVAHI_BROWSER_NEW:
if (!serviceBrowser->m_serviceTypes.contains(type)) {
serviceBrowser->m_serviceTypes.append(type);
qCDebug(dcAvahi()) << "[+] Service browser" << type;
qCDebug(dcAvahiDebug()) << "[+] Service browser" << type;
serviceBrowser->createServiceBrowser(type);
}
break;

1
libnymea/loggingcategories.cpp
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@ -42,6 +42,7 @@ Q_LOGGING_CATEGORY(dcJsonRpcTraffic, "JsonRpcTraffic")
Q_LOGGING_CATEGORY(dcRest, "Rest")
Q_LOGGING_CATEGORY(dcOAuth2, "OAuth2")
Q_LOGGING_CATEGORY(dcAvahi, "Avahi")
Q_LOGGING_CATEGORY(dcAvahiDebug, "AvahiDebug")
Q_LOGGING_CATEGORY(dcUpnp, "UPnP")
Q_LOGGING_CATEGORY(dcBluetooth, "Bluetooth")
Q_LOGGING_CATEGORY(dcCloud, "Cloud")

1
libnymea/loggingcategories.h
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@ -50,6 +50,7 @@ Q_DECLARE_LOGGING_CATEGORY(dcJsonRpcTraffic)
Q_DECLARE_LOGGING_CATEGORY(dcRest)
Q_DECLARE_LOGGING_CATEGORY(dcOAuth2)
Q_DECLARE_LOGGING_CATEGORY(dcAvahi)
Q_DECLARE_LOGGING_CATEGORY(dcAvahiDebug)
Q_DECLARE_LOGGING_CATEGORY(dcUpnp)
Q_DECLARE_LOGGING_CATEGORY(dcBluetooth)
Q_DECLARE_LOGGING_CATEGORY(dcCloud)

1
server/main.cpp
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@ -122,6 +122,7 @@ int main(int argc, char *argv[])
"TimeManager",
"Coap",
"Avahi",
"AvahiDebug",
"UPnP",
"Cloud",
"CloudTraffic",