8 files changed, 237 insertions, 203 deletions

diff --git a/src/HTTPServer/HTTPConnection.cpp b/src/HTTPServer/HTTPConnection.cpp
index d5dbf0199..de12b36ce 100644
--- a/src/HTTPServer/HTTPConnection.cpp
+++ b/src/HTTPServer/HTTPConnection.cpp
@@ -38,8 +38,7 @@ cHTTPConnection::~cHTTPConnection()
 
 void cHTTPConnection::SendStatusAndReason(int a_StatusCode, const AString & a_Response)
 {
-	AppendPrintf(m_OutgoingData, "%d %s\r\nContent-Length: 0\r\n\r\n", a_StatusCode, a_Response.c_str());
-	m_HTTPServer.NotifyConnectionWrite(*this);
+	SendData(Printf("%d %s\r\nContent-Length: 0\r\n\r\n", a_StatusCode, a_Response.c_str()));
 	m_State = wcsRecvHeaders;
 }
 
@@ -49,8 +48,7 @@ void cHTTPConnection::SendStatusAndReason(int a_StatusCode, const AString & a_Re
 
 void cHTTPConnection::SendNeedAuth(const AString & a_Realm)
 {
-	AppendPrintf(m_OutgoingData, "HTTP/1.1 401 Unauthorized\r\nWWW-Authenticate: Basic realm=\"%s\"\r\nContent-Length: 0\r\n\r\n", a_Realm.c_str());
-	m_HTTPServer.NotifyConnectionWrite(*this);
+	SendData(Printf("HTTP/1.1 401 Unauthorized\r\nWWW-Authenticate: Basic realm=\"%s\"\r\nContent-Length: 0\r\n\r\n", a_Realm.c_str()));
 	m_State = wcsRecvHeaders;
 }
 
@@ -61,9 +59,10 @@ void cHTTPConnection::SendNeedAuth(const AString & a_Realm)
 void cHTTPConnection::Send(const cHTTPResponse & a_Response)
 {
 	ASSERT(m_State == wcsRecvIdle);
-	a_Response.AppendToData(m_OutgoingData);
+	AString toSend;
+	a_Response.AppendToData(toSend);
 	m_State = wcsSendingResp;
-	m_HTTPServer.NotifyConnectionWrite(*this);
+	SendData(toSend);
 }
 
 
@@ -73,10 +72,10 @@ void cHTTPConnection::Send(const cHTTPResponse & a_Response)
 void cHTTPConnection::Send(const void * a_Data, size_t a_Size)
 {
 	ASSERT(m_State == wcsSendingResp);
-	AppendPrintf(m_OutgoingData, SIZE_T_FMT_HEX "\r\n", a_Size);
-	m_OutgoingData.append((const char *)a_Data, a_Size);
-	m_OutgoingData.append("\r\n");
-	m_HTTPServer.NotifyConnectionWrite(*this);
+	// We're sending in Chunked transfer encoding
+	SendData(Printf(SIZE_T_FMT_HEX "\r\n", a_Size));
+	SendData(a_Data, a_Size);
+	SendData("\r\n");
 }
 
 
@@ -86,9 +85,8 @@ void cHTTPConnection::Send(const void * a_Data, size_t a_Size)
 void cHTTPConnection::FinishResponse(void)
 {
 	ASSERT(m_State == wcsSendingResp);
-	m_OutgoingData.append("0\r\n\r\n");
+	SendData("0\r\n\r\n");
 	m_State = wcsRecvHeaders;
-	m_HTTPServer.NotifyConnectionWrite(*this);
 }
 
 
@@ -108,8 +106,7 @@ void cHTTPConnection::AwaitNextRequest(void)
 		case wcsRecvIdle:
 		{
 			// The client is waiting for a response, send an "Internal server error":
-			m_OutgoingData.append("HTTP/1.1 500 Internal Server Error\r\n\r\n");
-			m_HTTPServer.NotifyConnectionWrite(*this);
+			SendData("HTTP/1.1 500 Internal Server Error\r\n\r\n");
 			m_State = wcsRecvHeaders;
 			break;
 		}
@@ -117,7 +114,7 @@ void cHTTPConnection::AwaitNextRequest(void)
 		case wcsSendingResp:
 		{
 			// The response headers have been sent, we need to terminate the response body:
-			m_OutgoingData.append("0\r\n\r\n");
+			SendData("0\r\n\r\n");
 			m_State = wcsRecvHeaders;
 			break;
 		}
@@ -140,15 +137,27 @@ void cHTTPConnection::Terminate(void)
 	{
 		m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
 	}
-	m_HTTPServer.CloseConnection(*this);
+	m_Link.reset();
 }
 
 
 
 
 
-bool cHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
+void cHTTPConnection::OnLinkCreated(cTCPLinkPtr a_Link)
 {
+	ASSERT(m_Link == nullptr);
+	m_Link = a_Link;
+}
+
+
+
+
+
+void cHTTPConnection::OnReceivedData(const char * a_Data, size_t a_Size)
+{
+	ASSERT(m_Link != nullptr);
+
 	switch (m_State)
 	{
 		case wcsRecvHeaders:
@@ -164,13 +173,14 @@ bool cHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
 				delete m_CurrentRequest;
 				m_CurrentRequest = nullptr;
 				m_State = wcsInvalid;
-				m_HTTPServer.CloseConnection(*this);
-				return true;
+				m_Link->Close();
+				m_Link.reset();
+				return;
 			}
 			if (m_CurrentRequest->IsInHeaders())
 			{
 				// The request headers are not yet complete
-				return false;
+				return;
 			}
 			
 			// The request has finished parsing its headers successfully, notify of it:
@@ -186,11 +196,13 @@ bool cHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
 			// Process the rest of the incoming data into the request body:
 			if (a_Size > BytesConsumed)
 			{
-				return cHTTPConnection::DataReceived(a_Data + BytesConsumed, a_Size - BytesConsumed);
+				cHTTPConnection::OnReceivedData(a_Data + BytesConsumed, a_Size - BytesConsumed);
+				return;
 			}
 			else
 			{
-				return cHTTPConnection::DataReceived("", 0);  // If the request has zero body length, let it be processed right-away
+				cHTTPConnection::OnReceivedData("", 0);  // If the request has zero body length, let it be processed right-away
+				return;
 			}
 		}
 
@@ -210,8 +222,9 @@ bool cHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
 				if (!m_CurrentRequest->DoesAllowKeepAlive())
 				{
 					m_State = wcsInvalid;
-					m_HTTPServer.CloseConnection(*this);
-					return true;
+					m_Link->Close();
+					m_Link.reset();
+					return;
 				}
 				delete m_CurrentRequest;
 				m_CurrentRequest = nullptr;
@@ -225,32 +238,39 @@ bool cHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
 			break;
 		}
 	}
-	return false;
 }
 
 
 
 
 
-void cHTTPConnection::GetOutgoingData(AString & a_Data)
+void cHTTPConnection::OnRemoteClosed(void)
 {
-	std::swap(a_Data, m_OutgoingData);
+	if (m_CurrentRequest != nullptr)
+	{
+		m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
+	}
+	m_Link.reset();
 }
 
 
 
 
 
-void cHTTPConnection::SocketClosed(void)
+
+void cHTTPConnection::OnError(int a_ErrorCode, const AString & a_ErrorMsg)
 {
-	if (m_CurrentRequest != nullptr)
-	{
-		m_HTTPServer.RequestFinished(*this, *m_CurrentRequest);
-	}
-	m_HTTPServer.CloseConnection(*this);
+	OnRemoteClosed();
 }
 
 
 
 
+void cHTTPConnection::SendData(const void * a_Data, size_t a_Size)
+{
+	m_Link->Send(a_Data, a_Size);
+}
+
+
+
 
diff --git a/src/HTTPServer/HTTPConnection.h b/src/HTTPServer/HTTPConnection.h
index ccbf26466..8ecc4a4d4 100644
--- a/src/HTTPServer/HTTPConnection.h
+++ b/src/HTTPServer/HTTPConnection.h
@@ -9,7 +9,7 @@
 
 #pragma once
 
-#include "../OSSupport/SocketThreads.h"
+#include "../OSSupport/Network.h"
 
 
 
@@ -25,7 +25,7 @@ class cHTTPRequest;
 
 
 class cHTTPConnection :
-	public cSocketThreads::cCallback
+	public cTCPLink::cCallbacks
 {
 public:
 	
@@ -78,9 +78,6 @@ protected:
 	/** Status in which the request currently is */
 	eState m_State;
 	
-	/** Data that is queued for sending, once the socket becomes writable */
-	AString m_OutgoingData;
-	
 	/** The request being currently received
 	Valid only between having parsed the headers and finishing receiving the body. */
 	cHTTPRequest * m_CurrentRequest;
@@ -88,18 +85,34 @@ protected:
 	/** Number of bytes that remain to read for the complete body of the message to be received.
 	Valid only in wcsRecvBody */
 	size_t m_CurrentRequestBodyRemaining;
+
+	/** The network link attached to this connection. */
+	cTCPLinkPtr m_Link;
 	
 	
-	// cSocketThreads::cCallback overrides:
-	/** Data is received from the client.
-	Returns true if the connection has been closed as the result of parsing the data. */
-	virtual bool DataReceived(const char * a_Data, size_t a_Size) override;
+	// cTCPLink::cCallbacks overrides:
+	/** The link instance has been created, remember it. */
+	virtual void OnLinkCreated(cTCPLinkPtr a_Link) override;
+
+	/** Data is received from the client. */
+	virtual void OnReceivedData(const char * a_Data, size_t a_Size) override;
 	
-	/** Data can be sent to client */
-	virtual void GetOutgoingData(AString & a_Data) override;
+	/** The socket has been closed for any reason. */
+	virtual void OnRemoteClosed(void) override;
 	
-	/** The socket has been closed for any reason */
-	virtual void SocketClosed(void) override;
+	/** An error has occurred on the socket. */
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override;
+
+	// Overridable:
+	/** Called to send raw data over the link. Descendants may provide data transformations (SSL etc.) */
+	virtual void SendData(const void * a_Data, size_t a_Size);
+
+	/** Sends the raw data over the link.
+	Descendants may provide data transformations (SSL etc.) via the overridable SendData() function. */
+	void SendData(const AString & a_Data)
+	{
+		SendData(a_Data.data(), a_Data.size());
+	}
 } ;
 
 typedef std::vector<cHTTPConnection *> cHTTPConnections;
diff --git a/src/HTTPServer/HTTPServer.cpp b/src/HTTPServer/HTTPServer.cpp
index 9ab030a1f..3bcf0783a 100644
--- a/src/HTTPServer/HTTPServer.cpp
+++ b/src/HTTPServer/HTTPServer.cpp
@@ -119,11 +119,45 @@ class cDebugCallbacks :
 
 
 ////////////////////////////////////////////////////////////////////////////////
+// cHTTPServerListenCallbacks:
+
+class cHTTPServerListenCallbacks:
+	public cNetwork::cListenCallbacks
+{
+public:
+	cHTTPServerListenCallbacks(cHTTPServer & a_HTTPServer, UInt16 a_Port):
+		m_HTTPServer(a_HTTPServer),
+		m_Port(a_Port)
+	{
+	}
+
+protected:
+	/** The HTTP server instance that we're attached to. */
+	cHTTPServer & m_HTTPServer;
+
+	/** The port for which this instance is responsible. */
+	UInt16 m_Port;
+
+	// cNetwork::cListenCallbacks overrides:
+	virtual cTCPLink::cCallbacksPtr OnIncomingConnection(const AString & a_RemoteIPAddress, UInt16 a_RemotePort) override
+	{
+		return m_HTTPServer.OnIncomingConnection(a_RemoteIPAddress, a_RemotePort);
+	}
+	virtual void OnAccepted(cTCPLink & a_Link) override {}
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
+	{
+		LOGWARNING("HTTP server error on port %d: %d (%s)", m_Port, a_ErrorCode, a_ErrorMsg.c_str());
+	}
+};
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
 // cHTTPServer:
 
 cHTTPServer::cHTTPServer(void) :
-	m_ListenThreadIPv4(*this, cSocket::IPv4, "WebServer"),
-	m_ListenThreadIPv6(*this, cSocket::IPv6, "WebServer"),
 	m_Callbacks(nullptr)
 {
 }
@@ -141,7 +175,7 @@ cHTTPServer::~cHTTPServer()
 
 
 
-bool cHTTPServer::Initialize(const AString & a_PortsIPv4, const AString & a_PortsIPv6)
+bool cHTTPServer::Initialize(void)
 {
 	// Read the HTTPS cert + key:
 	AString CertFile = cFile::ReadWholeFile("webadmin/httpscert.crt");
@@ -177,18 +211,6 @@ bool cHTTPServer::Initialize(const AString & a_PortsIPv4, const AString & a_Port
 	{
 		LOGINFO("WebServer: The server is running in secure HTTPS mode.");
 	}
-	
-	// Open up requested ports:
-	bool HasAnyPort;
-	m_ListenThreadIPv4.SetReuseAddr(true);
-	m_ListenThreadIPv6.SetReuseAddr(true);
-	HasAnyPort = m_ListenThreadIPv4.Initialize(a_PortsIPv4);
-	HasAnyPort = m_ListenThreadIPv6.Initialize(a_PortsIPv6) || HasAnyPort;
-	if (!HasAnyPort)
-	{
-		return false;
-	}
-	
 	return true;
 }
 
@@ -196,19 +218,28 @@ bool cHTTPServer::Initialize(const AString & a_PortsIPv4, const AString & a_Port
 
 
 
-bool cHTTPServer::Start(cCallbacks & a_Callbacks)
+bool cHTTPServer::Start(cCallbacks & a_Callbacks, const AStringVector & a_Ports)
 {
 	m_Callbacks = &a_Callbacks;
-	if (!m_ListenThreadIPv4.Start())
-	{
-		return false;
-	}
-	if (!m_ListenThreadIPv6.Start())
+
+	// Open up requested ports:
+	for (auto port : a_Ports)
 	{
-		m_ListenThreadIPv4.Stop();
-		return false;
-	}
-	return true;
+		UInt16 PortNum = static_cast<UInt16>(atoi(port.c_str()));
+		if (PortNum == 0)
+		{
+			LOGWARNING("WebServer: Invalid port value: \"%s\". Ignoring.", port.c_str());
+			continue;
+		}
+		auto Handle = cNetwork::Listen(PortNum, std::make_shared<cHTTPServerListenCallbacks>(*this, PortNum));
+		if (Handle->IsListening())
+		{
+			m_ServerHandles.push_back(Handle);
+		}
+	}  // for port - a_Ports[]
+	
+	// Report success if at least one port opened successfully:
+	return !m_ServerHandles.empty();
 }
 
 
@@ -217,63 +248,30 @@ bool cHTTPServer::Start(cCallbacks & a_Callbacks)
 
 void cHTTPServer::Stop(void)
 {
-	m_ListenThreadIPv4.Stop();
-	m_ListenThreadIPv6.Stop();
-	
-	// Drop all current connections:
-	cCSLock Lock(m_CSConnections);
-	while (!m_Connections.empty())
+	for (auto handle : m_ServerHandles)
 	{
-		m_Connections.front()->Terminate();
-	}  // for itr - m_Connections[]
+		handle->Close();
+	}
+	m_ServerHandles.clear();
 }
 
 
 
 
 
-void cHTTPServer::OnConnectionAccepted(cSocket & a_Socket)
+cTCPLink::cCallbacksPtr cHTTPServer::OnIncomingConnection(const AString & a_RemoteIPAddress, UInt16 a_RemotePort)
 {
-	cHTTPConnection * Connection;
+	UNUSED(a_RemoteIPAddress);
+	UNUSED(a_RemotePort);
+
 	if (m_Cert.get() != nullptr)
 	{
-		Connection = new cSslHTTPConnection(*this, m_Cert, m_CertPrivKey);
+		return std::make_shared<cSslHTTPConnection>(*this, m_Cert, m_CertPrivKey);
 	}
 	else
 	{
-		Connection = new cHTTPConnection(*this);
+		return std::make_shared<cHTTPConnection>(*this);
 	}
-	m_SocketThreads.AddClient(a_Socket, Connection);
-	cCSLock Lock(m_CSConnections);
-	m_Connections.push_back(Connection);
-}
-
-
-
-
-
-void cHTTPServer::CloseConnection(cHTTPConnection & a_Connection)
-{
-	m_SocketThreads.RemoveClient(&a_Connection);
-	cCSLock Lock(m_CSConnections);
-	for (cHTTPConnections::iterator itr = m_Connections.begin(), end = m_Connections.end(); itr != end; ++itr)
-	{
-		if (*itr == &a_Connection)
-		{
-			m_Connections.erase(itr);
-			break;
-		}
-	}
-	delete &a_Connection;
-}
-
-
-
-
-
-void cHTTPServer::NotifyConnectionWrite(cHTTPConnection & a_Connection)
-{
-	m_SocketThreads.NotifyWrite(&a_Connection);
 }
 
 
diff --git a/src/HTTPServer/HTTPServer.h b/src/HTTPServer/HTTPServer.h
index 73d4cbdd0..d626fb475 100644
--- a/src/HTTPServer/HTTPServer.h
+++ b/src/HTTPServer/HTTPServer.h
@@ -9,8 +9,7 @@
 
 #pragma once
 
-#include "../OSSupport/ListenThread.h"
-#include "../OSSupport/SocketThreads.h"
+#include "../OSSupport/Network.h"
 #include "../IniFile.h"
 #include "PolarSSL++/RsaPrivateKey.h"
 #include "PolarSSL++/CryptoKey.h"
@@ -33,8 +32,7 @@ typedef std::vector<cHTTPConnection *> cHTTPConnections;
 
 
 
-class cHTTPServer :
-	public cListenThread::cCallback
+class cHTTPServer
 {
 public:
 	class cCallbacks
@@ -42,44 +40,39 @@ public:
 	public:
 		virtual ~cCallbacks() {}
 		
-		/** Called when a new request arrives over a connection and its headers have been parsed.
-		The request body needn't have arrived yet.
-		*/
+		/** Called when a new request arrives over a connection and all its headers have been parsed.
+		The request body needn't have arrived yet. */
 		virtual void OnRequestBegun(cHTTPConnection & a_Connection, cHTTPRequest & a_Request) = 0;
 		
 		/** Called when another part of request body has arrived.
 		May be called multiple times for a single request. */
 		virtual void OnRequestBody(cHTTPConnection & a_Connection, cHTTPRequest & a_Request, const char * a_Data, size_t a_Size) = 0;
 		
-		/// Called when the request body has been fully received in previous calls to OnRequestBody()
+		/** Called when the request body has been fully received in previous calls to OnRequestBody() */
 		virtual void OnRequestFinished(cHTTPConnection & a_Connection, cHTTPRequest & a_Request) = 0;
 	} ;
 	
 	cHTTPServer(void);
 	virtual ~cHTTPServer();
 	
-	/// Initializes the server on the specified ports
-	bool Initialize(const AString & a_PortsIPv4, const AString & a_PortsIPv6);
+	/** Initializes the server - reads the cert files etc. */
+	bool Initialize(void);
 	
-	/// Starts the server and assigns the callbacks to use for incoming requests
-	bool Start(cCallbacks & a_Callbacks);
+	/** Starts the server and assigns the callbacks to use for incoming requests */
+	bool Start(cCallbacks & a_Callbacks, const AStringVector & a_Ports);
 	
-	/// Stops the server, drops all current connections
+	/** Stops the server, drops all current connections */
 	void Stop(void);
 	
 protected:
 	friend class cHTTPConnection;
 	friend class cSslHTTPConnection;
+	friend class cHTTPServerListenCallbacks;
 	
-	cListenThread m_ListenThreadIPv4;
-	cListenThread m_ListenThreadIPv6;
+	/** The cNetwork API handle for the listening socket. */
+	cServerHandlePtrs m_ServerHandles;
 	
-	cSocketThreads m_SocketThreads;
-
-	cCriticalSection m_CSConnections;
-	cHTTPConnections m_Connections;    ///< All the connections that are currently being serviced
-	
-	/// The callbacks to call for various events
+	/** The callbacks to call for various events */
 	cCallbacks * m_Callbacks;
 	
 	/** The server certificate to use for the SSL connections */
@@ -89,23 +82,18 @@ protected:
 	cCryptoKeyPtr m_CertPrivKey;
 	
 
-	// cListenThread::cCallback overrides:
-	virtual void OnConnectionAccepted(cSocket & a_Socket) override;
-	
-	/// Called by cHTTPConnection to close the connection (presumably due to an error)
-	void CloseConnection(cHTTPConnection & a_Connection);
-	
-	/// Called by cHTTPConnection to notify SocketThreads that there's data to be sent for the connection
-	void NotifyConnectionWrite(cHTTPConnection & a_Connection);
-	
-	/// Called by cHTTPConnection when it finishes parsing the request header
+	/** Called by cHTTPServerListenCallbacks when there's a new incoming connection.
+	Returns the connection instance to be used as the cTCPLink callbacks. */
+	cTCPLink::cCallbacksPtr OnIncomingConnection(const AString & a_RemoteIPAddress, UInt16 a_RemotePort);
+
+	/** Called by cHTTPConnection when it finishes parsing the request header */
 	void NewRequest(cHTTPConnection & a_Connection, cHTTPRequest & a_Request);
 	
 	/** Called by cHTTPConenction when it receives more data for the request body.
 	May be called multiple times for a single request. */
 	void RequestBody(cHTTPConnection & a_Connection, cHTTPRequest & a_Request, const char * a_Data, size_t a_Size);
 	
-	/// Called by cHTTPConnection when it detects that the request has finished (all of its body has been received)
+	/** Called by cHTTPConnection when it detects that the request has finished (all of its body has been received) */
 	void RequestFinished(cHTTPConnection & a_Connection, cHTTPRequest & a_Request);
 } ;
 
diff --git a/src/HTTPServer/SslHTTPConnection.cpp b/src/HTTPServer/SslHTTPConnection.cpp
index d237089d9..f09daac8f 100644
--- a/src/HTTPServer/SslHTTPConnection.cpp
+++ b/src/HTTPServer/SslHTTPConnection.cpp
@@ -25,14 +25,8 @@ cSslHTTPConnection::cSslHTTPConnection(cHTTPServer & a_HTTPServer, const cX509Ce
 
 
 
-bool cSslHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
+void cSslHTTPConnection::OnReceivedData(const char * a_Data, size_t a_Size)
 {
-	// If there is outgoing data in the queue, notify the server that it should write it out:
-	if (!m_OutgoingData.empty())
-	{
-		m_HTTPServer.NotifyConnectionWrite(*this);
-	}
-	
 	// Process the received data:
 	const char * Data = a_Data;
 	size_t Size = a_Size;
@@ -52,17 +46,18 @@ bool cSslHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
 		int NumRead = m_Ssl.ReadPlain(Buffer, sizeof(Buffer));
 		if (NumRead > 0)
 		{
-			if (super::DataReceived(Buffer, (size_t)NumRead))
-			{
-				// The socket has been closed, and the object is already deleted. Bail out.
-				return true;
-			}
+			super::OnReceivedData(Buffer, (size_t)NumRead);
+		}
+		else if (NumRead == POLARSSL_ERR_NET_WANT_READ)
+		{
+			// SSL requires us to send data to peer first, do so by "sending" empty data:
+			SendData(nullptr, 0);
 		}
 		
 		// If both failed, bail out:
 		if ((BytesWritten == 0) && (NumRead <= 0))
 		{
-			return false;
+			return;
 		}
 	}
 }
@@ -71,18 +66,20 @@ bool cSslHTTPConnection::DataReceived(const char * a_Data, size_t a_Size)
 
 
 
-void cSslHTTPConnection::GetOutgoingData(AString & a_Data)
+void cSslHTTPConnection::SendData(const void * a_Data, size_t a_Size)
 {
+	const char * OutgoingData = reinterpret_cast<const char *>(a_Data);
+	size_t pos = 0;
 	for (;;)
 	{
 		// Write as many bytes from our buffer to SSL's encryption as possible:
 		int NumWritten = 0;
-		if (!m_OutgoingData.empty())
+		if (pos < a_Size)
 		{
-			NumWritten = m_Ssl.WritePlain(m_OutgoingData.data(), m_OutgoingData.size());
+			NumWritten = m_Ssl.WritePlain(OutgoingData + pos, a_Size - pos);
 			if (NumWritten > 0)
 			{
-				m_OutgoingData.erase(0, (size_t)NumWritten);
+				pos += static_cast<size_t>(NumWritten);
 			}
 		}
 		
@@ -91,7 +88,7 @@ void cSslHTTPConnection::GetOutgoingData(AString & a_Data)
 		size_t NumBytes = m_Ssl.ReadOutgoing(Buffer, sizeof(Buffer));
 		if (NumBytes > 0)
 		{
-			a_Data.append(Buffer, NumBytes);
+			m_Link->Send(Buffer, NumBytes);
 		}
 		
 		// If both failed, bail out:
diff --git a/src/HTTPServer/SslHTTPConnection.h b/src/HTTPServer/SslHTTPConnection.h
index c2c1585cd..dc54b1eff 100644
--- a/src/HTTPServer/SslHTTPConnection.h
+++ b/src/HTTPServer/SslHTTPConnection.h
@@ -36,8 +36,8 @@ protected:
 	cCryptoKeyPtr m_PrivateKey;
 	
 	// cHTTPConnection overrides:
-	virtual bool DataReceived   (const char * a_Data, size_t a_Size) override;  // Data is received from the client
-	virtual void GetOutgoingData(AString & a_Data) override;  // Data can be sent to client
+	virtual void OnReceivedData(const char * a_Data, size_t a_Size) override;  // Data is received from the client
+	virtual void SendData(const void * a_Data, size_t a_Size) override;  // Data is to be sent to client
 } ;
 
 
diff --git a/src/WebAdmin.cpp b/src/WebAdmin.cpp
index dbf600c25..13cf3cc41 100644
--- a/src/WebAdmin.cpp
+++ b/src/WebAdmin.cpp
@@ -19,7 +19,16 @@
 
 
 
-/// Helper class - appends all player names together in a HTML list
+static const char DEFAULT_WEBADMIN_PORTS[] = "8080";
+
+
+
+
+
+////////////////////////////////////////////////////////////////////////////////
+// cPlayerAccum:
+
+/** Helper class - appends all player names together in an HTML list */
 class cPlayerAccum :
 	public cPlayerListCallback
 {
@@ -40,11 +49,12 @@ public:
 
 
 
+////////////////////////////////////////////////////////////////////////////////
+// cWebAdmin:
+
 cWebAdmin::cWebAdmin(void) :
 	m_IsInitialized(false),
 	m_IsRunning(false),
-	m_PortsIPv4("8080"),
-	m_PortsIPv6(""),
 	m_TemplateScript("<webadmin_template>")
 {
 }
@@ -91,8 +101,7 @@ bool cWebAdmin::Init(void)
 		m_IniFile.AddHeaderComment(" Password format: Password=*password*; for example:");
 		m_IniFile.AddHeaderComment(" [User:admin]");
 		m_IniFile.AddHeaderComment(" Password=admin");
-		m_IniFile.SetValue("WebAdmin", "Port", m_PortsIPv4);
-		m_IniFile.SetValue("WebAdmin", "PortsIPv6", m_PortsIPv6);
+		m_IniFile.SetValue("WebAdmin", "Ports", DEFAULT_WEBADMIN_PORTS);
 		m_IniFile.WriteFile("webadmin.ini");
 	}
 
@@ -104,32 +113,6 @@ bool cWebAdmin::Init(void)
 
 	LOGD("Initialising WebAdmin...");
 
-	m_PortsIPv4 = m_IniFile.GetValueSet("WebAdmin", "Port", m_PortsIPv4);
-	m_PortsIPv6 = m_IniFile.GetValueSet("WebAdmin", "PortsIPv6", m_PortsIPv6);
-
-	if (!m_HTTPServer.Initialize(m_PortsIPv4, m_PortsIPv6))
-	{
-		return false;
-	}
-	m_IsInitialized = true;
-	m_IniFile.WriteFile("webadmin.ini");
-	return true;
-}
-
-
-
-
-
-bool cWebAdmin::Start(void)
-{
-	if (!m_IsInitialized)
-	{
-		// Not initialized
-		return false;
-	}
-
-	LOGD("Starting WebAdmin...");
-
 	// Initialize the WebAdmin template script and load the file
 	m_TemplateScript.Create();
 	m_TemplateScript.RegisterAPILibs();
@@ -141,6 +124,7 @@ bool cWebAdmin::Start(void)
 		return false;
 	}
 
+	// Load the login template, provide a fallback default if not found:
 	if (!LoadLoginTemplate())
 	{
 		LOGWARN("Could not load WebAdmin login template \"%s\", using fallback template.", FILE_IO_PREFIX "webadmin/login_template.html");
@@ -155,7 +139,34 @@ bool cWebAdmin::Start(void)
 		"</center>";
 	}
 
-	m_IsRunning = m_HTTPServer.Start(*this);
+	// Read the ports to be used:
+	// Note that historically the ports were stored in the "Port" and "PortsIPv6" values
+	m_Ports = ReadUpgradeIniPorts(m_IniFile, "WebAdmin", "Ports", "Port", "PortsIPv6", DEFAULT_WEBADMIN_PORTS);
+
+	if (!m_HTTPServer.Initialize())
+	{
+		return false;
+	}
+	m_IsInitialized = true;
+	m_IniFile.WriteFile("webadmin.ini");
+	return true;
+}
+
+
+
+
+
+bool cWebAdmin::Start(void)
+{
+	if (!m_IsInitialized)
+	{
+		// Not initialized
+		return false;
+	}
+
+	LOGD("Starting WebAdmin...");
+
+	m_IsRunning = m_HTTPServer.Start(*this, m_Ports);
 	return m_IsRunning;
 }
 
diff --git a/src/WebAdmin.h b/src/WebAdmin.h
index a85fb1f0c..86a8a9a4b 100644
--- a/src/WebAdmin.h
+++ b/src/WebAdmin.h
@@ -5,7 +5,6 @@
 
 #pragma once
 
-#include "OSSupport/Socket.h"
 #include "Bindings/LuaState.h"
 #include "IniFile.h"
 #include "HTTPServer/HTTPServer.h"
@@ -135,8 +134,16 @@ public:
 	/** Returns the prefix needed for making a link point to the webadmin root from the given URL ("../../../webadmin"-style) */
 	AString GetBaseURL(const AString & a_URL);
 
-	AString GetIPv4Ports(void) const { return m_PortsIPv4; }
-	AString GetIPv6Ports(void) const { return m_PortsIPv6; }
+	/** Returns the list of ports used for the webadmin. */
+	AString GetPorts(void) const { return StringsConcat(m_Ports, ','); }
+
+	/** OBSOLETE: Returns the list of IPv4 ports used for the webadmin.
+	Currently there is no distinction between IPv4 and IPv6; use GetPorts() instead. */
+	AString GetIPv4Ports(void) const { return GetPorts(); }
+
+	/** OBSOLETE: Returns the list of IPv6 ports used for the webadmin.
+	Currently there is no distinction between IPv4 and IPv6; use GetPorts() instead. */
+	AString GetIPv6Ports(void) const { return GetPorts(); }
 
 	// tolua_end
 
@@ -205,8 +212,8 @@ protected:
 
 	PluginList m_Plugins;
 
-	AString m_PortsIPv4;
-	AString m_PortsIPv6;
+	/** The ports on which the webadmin is running. */
+	AStringVector m_Ports;
 
 	/** The Lua template script to provide templates: */
 	cLuaState m_TemplateScript;