Added support for heartbeat global option.

lib/client/CServerProxy.cpp

@@ -34,7 +34,8 @@ CServerProxy::CServerProxy(IClient* client,
 	m_client(client),
 	m_input(adoptedInput),
 	m_output(adoptedOutput),
-	m_seqNum(0)
+	m_seqNum(0),
+	m_heartRate(kHeartRate)
 {
 	assert(m_client != NULL);
 	assert(m_input  != NULL);
@@ -76,7 +77,7 @@ CServerProxy::mainLoop()
 			// wait for a message
 			LOG((CLOG_DEBUG2 "waiting for message"));
 			UInt8 code[4];
-			UInt32 n = getInputStream()->read(code, 4, kHeartRate);
+			UInt32 n = getInputStream()->read(code, 4, m_heartRate);
 
 			// check if server hungup
 			if (n == 0) {
@@ -86,7 +87,7 @@ CServerProxy::mainLoop()
 
 			// check for time out
 			if (n == (UInt32)-1 ||
-				(kHeartRate >= 0.0 && heartbeat.getTime() > kHeartRate)) {
+				(m_heartRate >= 0.0 && heartbeat.getTime() > m_heartRate)) {
 				// send heartbeat
 				CLock lock(&m_mutex);
 				CProtocolUtil::writef(getOutputStream(), kMsgCNoop);
@@ -663,9 +664,20 @@ CServerProxy::resetOptions()
 	// forward
 	getClient()->resetOptions();
 
+	CLock lock(&m_mutex);
+
+	// reset heart rate
+	m_heartRate = kHeartRate;
+
 	// reset modifier translation table
-	for (KeyModifierID id = 0; id < kKeyModifierIDLast; ++id)
+	for (KeyModifierID id = 0; id < kKeyModifierIDLast; ++id) {
 		m_modifierTranslationTable[id] = id;
+	}
+
+	// send heartbeat if necessary
+	if (m_heartRate >= 0.0) {
+		CProtocolUtil::writef(getOutputStream(), kMsgCNoop);
+	}
 }
 
 void
@@ -679,6 +691,8 @@ CServerProxy::setOptions()
 	// forward
 	getClient()->setOptions(options);
 
+	CLock lock(&m_mutex);
+
 	// update modifier table
 	for (UInt32 i = 0, n = options.size(); i < n; i += 2) {
 		KeyModifierID id = kKeyModifierIDNull;
@@ -697,6 +711,15 @@ CServerProxy::setOptions()
 		else if (options[i] == kOptionModifierMapForSuper) {
 			id = kKeyModifierIDSuper;
 		}
+		else if (options[i] == kOptionHeartbeat) {
+			// update heart rate
+			m_heartRate = 1.0e-3 * static_cast<double>(options[i + 1]);
+
+			// send heartbeat if necessary
+			if (m_heartRate >= 0.0) {
+				CProtocolUtil::writef(getOutputStream(), kMsgCNoop);
+			}
+		}
 		if (id != kKeyModifierIDNull) {
 			m_modifierTranslationTable[id] =
 				static_cast<KeyModifierID>(options[i + 1]);

lib/client/CServerProxy.h

@@ -130,6 +130,7 @@ private:
 	bool				m_ignoreMouse;
 
 	KeyModifierID		m_modifierTranslationTable[kKeyModifierIDLast];
+	double				m_heartRate;
 };
 
 #endif

lib/server/CClientProxy.cpp

@@ -59,3 +59,9 @@ CClientProxy::getName() const
 {
 	return m_name;
 }
+
+const CMutex*
+CClientProxy::getMutex() const
+{
+	return &m_mutex;
+}

lib/server/CClientProxy.h

@@ -16,6 +16,7 @@
 #define CCLIENTPROXY_H
 
 #include "IClient.h"
+#include "CMutex.h"
 #include "CString.h"
 
 class IInputStream;
@@ -84,7 +85,16 @@ public:
 	virtual void		getCursorPos(SInt32& x, SInt32& y) const = 0;
 	virtual void		getCursorCenter(SInt32& x, SInt32& y) const = 0;
 
+protected:
+	//! Get mutex
+	/*!
+	Returns the mutex for this object.  Subclasses should use this
+	mutex to protect their data.
+	*/
+	const CMutex*		getMutex() const;
+
 private:
+	CMutex				m_mutex;
 	IServer*			m_server;
 	CString				m_name;
 	IInputStream*		m_input;

lib/server/CClientProxy1_0.cpp

@@ -31,7 +31,9 @@
 
 CClientProxy1_0::CClientProxy1_0(IServer* server, const CString& name,
 				IInputStream* input, IOutputStream* output) :
-	CClientProxy(server, name, input, output)
+	CClientProxy(server, name, input, output),
+	m_heartRate(kHeartRate),
+	m_heartDeath(kHeartRate * kHeartBeatsUntilDeath)
 {
 	for (UInt32 i = 0; i < kClipboardEnd; ++i) {
 		m_clipboardDirty[i] = true;
@@ -81,7 +83,7 @@ CClientProxy1_0::mainLoop()
 
 		// wait for a message
 		UInt8 code[4];
-		UInt32 n = getInputStream()->read(code, 4, kHeartRate);
+		UInt32 n = getInputStream()->read(code, 4, m_heartRate);
 		CThread::testCancel();
 
 		// check if client hungup
@@ -92,7 +94,7 @@ CClientProxy1_0::mainLoop()
 
 		// check if client has stopped sending heartbeats
 		if (n == (UInt32)-1) {
-			if (kHeartDeath >= 0.0 && heartTimer.getTime() > kHeartDeath) {
+			if (m_heartDeath >= 0.0 && heartTimer.getTime() > m_heartDeath) {
 				LOG((CLOG_NOTE "client \"%s\" is dead", getName().c_str()));
 				return;
 			}
@@ -117,6 +119,7 @@ CClientProxy1_0::mainLoop()
 		}
 		else if (memcmp(code, kMsgCNoop, 4) == 0) {
 			// discard no-ops
+			LOG((CLOG_DEBUG2 "no-op from", getName().c_str()));
 			continue;
 		}
 		else if (memcmp(code, kMsgCClipboard, 4) == 0) {
@@ -168,7 +171,7 @@ void
 CClientProxy1_0::setClipboard(ClipboardID id, const CString& data)
 {
 	// ignore if this clipboard is already clean
-	CLock lock(&m_mutex);
+	CLock lock(getMutex());
 	if (m_clipboardDirty[id]) {
 		// this clipboard is now clean
 		m_clipboardDirty[id] = false;
@@ -185,14 +188,14 @@ CClientProxy1_0::grabClipboard(ClipboardID id)
 	CProtocolUtil::writef(getOutputStream(), kMsgCClipboard, id, 0);
 
 	// this clipboard is now dirty
-	CLock lock(&m_mutex);
+	CLock lock(getMutex());
 	m_clipboardDirty[id] = true;
 }
 
 void
 CClientProxy1_0::setClipboardDirty(ClipboardID id, bool dirty)
 {
-	CLock lock(&m_mutex);
+	CLock lock(getMutex());
 	m_clipboardDirty[id] = dirty;
 }
 
@@ -257,6 +260,11 @@ CClientProxy1_0::resetOptions()
 {
 	LOG((CLOG_DEBUG1 "send reset options to \"%s\"", getName().c_str()));
 	CProtocolUtil::writef(getOutputStream(), kMsgCResetOptions);
+
+	// reset heart rate and death
+	CLock lock(getMutex());
+	m_heartRate  = kHeartRate;
+	m_heartDeath = kHeartRate * kHeartBeatsUntilDeath;
 }
 
 void
@@ -264,19 +272,31 @@ CClientProxy1_0::setOptions(const COptionsList& options)
 {
 	LOG((CLOG_DEBUG1 "send set options to \"%s\" size=%d", getName().c_str(), options.size()));
 	CProtocolUtil::writef(getOutputStream(), kMsgDSetOptions, &options);
+
+	// check options
+	CLock lock(getMutex());
+	for (UInt32 i = 0, n = options.size(); i < n; i += 2) {
+		if (options[i] == kOptionHeartbeat) {
+			m_heartRate = 1.0e-3 * static_cast<double>(options[i + 1]);
+			if (m_heartRate <= 0.0) {
+				m_heartRate = -1.0;
+			}
+			m_heartDeath = m_heartRate * kHeartBeatsUntilDeath;
+		}
+	}
 }
 
 SInt32
 CClientProxy1_0::getJumpZoneSize() const
 {
-	CLock lock(&m_mutex);
+	CLock lock(getMutex());
 	return m_info.m_zoneSize;
 }
 
 void
 CClientProxy1_0::getShape(SInt32& x, SInt32& y, SInt32& w, SInt32& h) const
 {
-	CLock lock(&m_mutex);
+	CLock lock(getMutex());
 	x = m_info.m_x;
 	y = m_info.m_y;
 	w = m_info.m_w;
@@ -292,7 +312,7 @@ CClientProxy1_0::getCursorPos(SInt32&, SInt32&) const
 void
 CClientProxy1_0::getCursorCenter(SInt32& x, SInt32& y) const
 {
-	CLock lock(&m_mutex);
+	CLock lock(getMutex());
 	x = m_info.m_mx;
 	y = m_info.m_my;
 }
@@ -301,7 +321,7 @@ void
 CClientProxy1_0::recvInfo(bool notify)
 {
 	{
-		CLock lock(&m_mutex);
+		CLock lock(getMutex());
 
 		// parse the message
 		SInt16 x, y, w, h, zoneSize, mx, my;

lib/server/CClientProxy1_0.h

@@ -17,7 +17,6 @@
 
 #include "CClientProxy.h"
 #include "ProtocolTypes.h"
-#include "CMutex.h"
 
 //! Proxy for client implementing protocol version 1.0
 class CClientProxy1_0 : public CClientProxy {
@@ -60,9 +59,10 @@ private:
 	void				recvGrabClipboard();
 
 private:
-	CMutex				m_mutex;
 	CClientInfo			m_info;
 	bool				m_clipboardDirty[kClipboardEnd];
+	double				m_heartRate;
+	double				m_heartDeath;
 };
 
 #endif

lib/server/CConfig.cpp

@@ -17,6 +17,7 @@
 #include "XSocket.h"
 #include "stdistream.h"
 #include "stdostream.h"
+#include <stdlib.h>
 
 //
 // CConfig
@@ -504,31 +505,57 @@ CConfig::readLine(std::istream& s, CString& line)
 	return false;
 }
 
-bool
+OptionValue
 CConfig::parseBoolean(const CString& arg)
 {
-	if (CStringUtil::CaselessCmp::equal(arg, "true"))
+	if (CStringUtil::CaselessCmp::equal(arg, "true")) {
-		return true;
+		return static_cast<OptionValue>(true);
-	if (CStringUtil::CaselessCmp::equal(arg, "false"))
+	}
-		return false;
+	if (CStringUtil::CaselessCmp::equal(arg, "false")) {
+		return static_cast<OptionValue>(false);
+	}
 	throw XConfigRead("invalid argument");
 }
 
+OptionValue
+CConfig::parseInt(const CString& arg)
+{
+	const char* s = arg.c_str();
+	char* end;
+	long tmp      = strtol(s, &end, 10);
+	if (*end != '\0') {
+		// invalid characters
+		throw XConfigRead("invalid argument");
+	}
+	OptionValue value = static_cast<OptionValue>(tmp);
+	if (value != tmp) {
+		// out of range
+		throw XConfigRead("argument out of range");
+	}
+	return value;
+}
+
 OptionValue
 CConfig::parseModifierKey(const CString& arg)
 {
-	if (CStringUtil::CaselessCmp::equal(arg, "shift"))
+	if (CStringUtil::CaselessCmp::equal(arg, "shift")) {
 		return static_cast<OptionValue>(kKeyModifierIDShift);
-	if (CStringUtil::CaselessCmp::equal(arg, "ctrl"))
+	}
+	if (CStringUtil::CaselessCmp::equal(arg, "ctrl")) {
 		return static_cast<OptionValue>(kKeyModifierIDControl);
-	if (CStringUtil::CaselessCmp::equal(arg, "alt"))
+	}
+	if (CStringUtil::CaselessCmp::equal(arg, "alt")) {
 		return static_cast<OptionValue>(kKeyModifierIDAlt);
-	if (CStringUtil::CaselessCmp::equal(arg, "meta"))
+	}
+	if (CStringUtil::CaselessCmp::equal(arg, "meta")) {
 		return static_cast<OptionValue>(kKeyModifierIDMeta);
-	if (CStringUtil::CaselessCmp::equal(arg, "super"))
+	}
+	if (CStringUtil::CaselessCmp::equal(arg, "super")) {
 		return static_cast<OptionValue>(kKeyModifierIDSuper);
-	if (CStringUtil::CaselessCmp::equal(arg, "none"))
+	}
+	if (CStringUtil::CaselessCmp::equal(arg, "none")) {
 		return static_cast<OptionValue>(kKeyModifierIDNull);
+	}
 	throw XConfigRead("invalid argument");
 }
 
@@ -556,10 +583,13 @@ CConfig::getOptionName(OptionID id)
 	if (id == kOptionModifierMapForSuper) {
 		return "super";
 	}
+	if (id == kOptionHeartbeat) {
+		return "heartbeat";
+	}
 	return NULL;
 }
 
-const char*
+CString
 CConfig::getOptionValue(OptionID id, OptionValue value)
 {
 	if (id == kOptionHalfDuplexCapsLock ||
@@ -591,6 +621,9 @@ CConfig::getOptionValue(OptionID id, OptionValue value)
 			return "none";
 		}
 	}
+	if (id == kOptionHeartbeat) {
+		return CStringUtil::print("%d", value);
+	}
 
 	return "";
 }
@@ -599,7 +632,7 @@ void
 CConfig::readSection(std::istream& s)
 {
 	static const char s_section[] = "section:";
-	static const char s_network[] = "network";
+	static const char s_options[] = "options";
 	static const char s_screens[] = "screens";
 	static const char s_links[]   = "links";
 	static const char s_aliases[] = "aliases";
@@ -627,8 +660,8 @@ CConfig::readSection(std::istream& s)
 	}
 
 	// read section
-	if (name == s_network) {
+	if (name == s_options) {
-		readSectionNetwork(s);
+		readSectionOptions(s);
 	}
 	else if (name == s_screens) {
 		readSectionScreens(s);
@@ -645,7 +678,7 @@ CConfig::readSection(std::istream& s)
 }
 
 void
-CConfig::readSectionNetwork(std::istream& s)
+CConfig::readSectionOptions(std::istream& s)
 {
 	CString line;
 	CString name;
@@ -693,6 +726,9 @@ CConfig::readSectionNetwork(std::istream& s)
 				throw XConfigRead("invalid http argument");
 			}
 		}
+		else if (name == "heartbeat") {
+			addOption("", kOptionHeartbeat, parseInt(value));
+		}
 		else {
 			throw XConfigRead("unknown argument");
 		}
@@ -931,15 +967,28 @@ operator>>(std::istream& s, CConfig& config)
 std::ostream&
 operator<<(std::ostream& s, const CConfig& config)
 {
-	// network section
+	// options section
-	s << "section: network" << std::endl;
+	s << "section: options" << std::endl;
+	const CConfig::CScreenOptions* options = config.getOptions("");
+	if (options != NULL && options->size() > 0) {
+		for (CConfig::CScreenOptions::const_iterator
+							option  = options->begin();
+							option != options->end(); ++option) {
+			const char* name = CConfig::getOptionName(option->first);
+			CString value    = CConfig::getOptionValue(option->first,
+														option->second);
+			if (name != NULL && !value.empty()) {
+				s << "\t" << name << " = " << value << std::endl;
+			}
+		}
+	}
 	if (config.m_synergyAddress.isValid()) {
-		s << "\taddress=" << config.m_synergyAddress.getHostname().c_str() <<
+		s << "\taddress = " <<
-								std::endl;
+			config.m_synergyAddress.getHostname().c_str() << std::endl;
 	}
 	if (config.m_httpAddress.isValid()) {
-		s << "\thttp=" << config.m_httpAddress.getHostname().c_str() <<
+		s << "\thttp = " <<
-								std::endl;
+			config.m_httpAddress.getHostname().c_str() << std::endl;
 	}
 	s << "end" << std::endl;
 
@@ -953,10 +1002,10 @@ operator<<(std::ostream& s, const CConfig& config)
 			for (CConfig::CScreenOptions::const_iterator
 								option  = options->begin();
 								option != options->end(); ++option) {
-				const char* name  = CConfig::getOptionName(option->first);
+				const char* name = CConfig::getOptionName(option->first);
-				const char* value = CConfig::getOptionValue(option->first,
+				CString value    = CConfig::getOptionValue(option->first,
 															option->second);
-				if (name != NULL && value != NULL) {
+				if (name != NULL && !value.empty()) {
 					s << "\t\t" << name << " = " << value << std::endl;
 				}
 			}

lib/server/CConfig.h

@@ -292,12 +292,13 @@ public:
 
 private:
 	static bool			readLine(std::istream&, CString&);
-	static bool			parseBoolean(const CString&);
+	static OptionValue	parseBoolean(const CString&);
+	static OptionValue	parseInt(const CString&);
 	static OptionValue	parseModifierKey(const CString&);
 	static const char*	getOptionName(OptionID);
-	static const char*	getOptionValue(OptionID, OptionValue);
+	static CString		getOptionValue(OptionID, OptionValue);
 	void				readSection(std::istream&);
-	void				readSectionNetwork(std::istream&);
+	void				readSectionOptions(std::istream&);
 	void				readSectionScreens(std::istream&);
 	void				readSectionLinks(std::istream&);
 	void				readSectionAliases(std::istream&);

lib/server/CServer.cpp

@@ -217,12 +217,29 @@ CServer::setConfig(const CConfig& config)
 	CLock lock(&m_mutex);
 	m_config = config;
 
+	// process global options
+	const CConfig::CScreenOptions* options = m_config.getOptions("");
+	if (options != NULL && options->size() > 0) {
+/*
+		for (CConfig::CScreenOptions::const_iterator index = options->begin();
+									index != options->end(); ++index) {
+			const OptionID id       = index->first;
+			const OptionValue value = index->second;
+		}
+*/
+	}
+
 	// tell primary screen about reconfiguration
 	if (m_primaryClient != NULL) {
 		m_primaryClient->reconfigure(getActivePrimarySides());
 	}
 
-	// FIXME -- tell all (connected) clients about current options
+	// tell all (connected) clients about current options
+	for (CClientList::const_iterator index = m_clients.begin();
+								index != m_clients.end(); ++index) {
+		IClient* client = index->second;
+		sendOptions(client);
+	}
 
 	return true;
 }
@@ -1622,20 +1639,31 @@ CServer::sendOptions(IClient* client) const
 {
 	// note -- must be locked on entry
 
-	// look up options for client.  we're done if there aren't any.
+	COptionsList optionsList;
+
+	// look up options for client
 	const CConfig::CScreenOptions* options =
 						m_config.getOptions(client->getName());
-	if (options == NULL || options->size() == 0) {
+	if (options != NULL && options->size() > 0) {
-		return;
+		// convert options to a more convenient form for sending
+		optionsList.reserve(2 * options->size());
+		for (CConfig::CScreenOptions::const_iterator index = options->begin();
+									index != options->end(); ++index) {
+			optionsList.push_back(index->first);
+			optionsList.push_back(static_cast<UInt32>(index->second));
+		}
 	}
 
-	// convert options to a more convenient form for sending
+	// look up global options
-	COptionsList optionsList;
+	options = m_config.getOptions("");
-	optionsList.reserve(2 * options->size());
+	if (options != NULL && options->size() > 0) {
-	for (CConfig::CScreenOptions::const_iterator index = options->begin();
+		// convert options to a more convenient form for sending
-								index != options->end(); ++index) {
+		optionsList.reserve(optionsList.size() + 2 * options->size());
-		optionsList.push_back(index->first);
+		for (CConfig::CScreenOptions::const_iterator index = options->begin();
-		optionsList.push_back(static_cast<UInt32>(index->second));
+									index != options->end(); ++index) {
+			optionsList.push_back(index->first);
+			optionsList.push_back(static_cast<UInt32>(index->second));
+		}
 	}
 
 	// send the options

lib/synergy/OptionTypes.h

@@ -50,6 +50,7 @@ static const OptionID	kOptionModifierMapForControl = OPTION_CODE("MMFC");
 static const OptionID	kOptionModifierMapForAlt     = OPTION_CODE("MMFA");
 static const OptionID	kOptionModifierMapForMeta    = OPTION_CODE("MMFM");
 static const OptionID	kOptionModifierMapForSuper   = OPTION_CODE("MMFR");
+static const OptionID	kOptionHeartbeat             = OPTION_CODE("HART");
 //@}
 
 #undef OPTION_CODE

lib/synergy/ProtocolTypes.h

@@ -31,8 +31,8 @@ static const UInt32		kMaxHelloLength = 1024;
 // heartbeat.
 static const double		kHeartRate = -1.0;
 
-// time without a heartbeat that constitutes death
+// number of skipped heartbeats that constitutes death
-static const double		kHeartDeath = 3.0 * kHeartRate;
+static const double		kHeartBeatsUntilDeath = 3.0;
 
 // direction constants
 enum EDirection {