4 files changed, 390 insertions, 0 deletions

diff --git a/tests/Network/CMakeLists.txt b/tests/Network/CMakeLists.txt
new file mode 100644
index 000000000..c0af50e2c
--- /dev/null
+++ b/tests/Network/CMakeLists.txt
@@ -0,0 +1,60 @@
+cmake_minimum_required (VERSION 2.6) 
+
+enable_testing()
+
+include_directories(${CMAKE_SOURCE_DIR}/src/)
+include_directories(${CMAKE_SOURCE_DIR}/lib/libevent/include)
+
+add_definitions(-DTEST_GLOBALS=1)
+
+# Create a single Network library that contains all the networking code:
+set (Network_SRCS
+	${CMAKE_SOURCE_DIR}/src/OSSupport/CriticalSection.cpp
+	${CMAKE_SOURCE_DIR}/src/OSSupport/Event.cpp
+	${CMAKE_SOURCE_DIR}/src/OSSupport/HostnameLookup.cpp
+	${CMAKE_SOURCE_DIR}/src/OSSupport/IPLookup.cpp
+	${CMAKE_SOURCE_DIR}/src/OSSupport/NetworkSingleton.cpp
+	${CMAKE_SOURCE_DIR}/src/OSSupport/ServerHandleImpl.cpp
+	${CMAKE_SOURCE_DIR}/src/OSSupport/TCPLinkImpl.cpp
+	${CMAKE_SOURCE_DIR}/src/StringUtils.cpp
+)
+
+set (Network_HDRS
+	${CMAKE_SOURCE_DIR}/src/OSSupport/CriticalSection.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/Event.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/HostnameLookup.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/IPLookup.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/Network.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/NetworkSingleton.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/ServerHandleImpl.h
+	${CMAKE_SOURCE_DIR}/src/OSSupport/TCPLinkImpl.h
+	${CMAKE_SOURCE_DIR}/src/StringUtils.h
+)
+
+add_library(Network
+	${Network_SRCS}
+	${Network_HDRS}
+)
+
+target_link_libraries(Network event_core event_extra)
+if (MSVC)
+	target_link_libraries(Network ws2_32.lib)
+endif()
+
+
+
+
+# Define individual tests:
+
+# Google: download the google.com frontpage using http client socket:
+add_executable(Google-exe Google.cpp)
+target_link_libraries(Google-exe Network)
+add_test(NAME Google-test COMMAND Google-exe)
+
+# EchoServer: Listen on port 9876, echo everything back:
+add_executable(EchoServer EchoServer.cpp)
+target_link_libraries(EchoServer Network)
+
+# NameLookup: Lookup hostname-to-IP and IP-to-hostname:
+add_executable(NameLookup NameLookup.cpp)
+target_link_libraries(NameLookup Network)
diff --git a/tests/Network/EchoServer.cpp b/tests/Network/EchoServer.cpp
new file mode 100644
index 000000000..728db0b7c
--- /dev/null
+++ b/tests/Network/EchoServer.cpp
@@ -0,0 +1,132 @@
+
+// EchoServer.cpp
+
+// Implements an Echo server using the LibEvent-based cNetwork API, as a test of that API
+
+#include "Globals.h"
+#include <iostream>
+#include <string>
+#include "OSSupport/Network.h"
+
+
+
+
+
+/** cTCPLink callbacks that echo everything they receive back to the remote peer. */
+class cEchoLinkCallbacks:
+	public cTCPLink::cCallbacks
+{
+	// cTCPLink::cCallbacks overrides:
+	virtual void OnLinkCreated(cTCPLinkPtr a_Link) override
+	{
+		ASSERT(m_Link == nullptr);
+		m_Link = a_Link;
+	}
+
+
+	virtual void OnReceivedData(const char * a_Data, size_t a_Size) override
+	{
+		ASSERT(m_Link != nullptr);
+
+		// Echo the incoming data back to outgoing data:
+		LOGD("%p (%s:%d): Data received (%u bytes), echoing back.", m_Link.get(), m_Link->GetRemoteIP().c_str(), m_Link->GetRemotePort(), static_cast<unsigned>(a_Size));
+		m_Link->Send(a_Data, a_Size);
+		LOGD("Echo queued");
+
+		// Search for a Ctrl+Z, if found, drop the connection:
+		for (size_t i = 0; i < a_Size; i++)
+		{
+			if (a_Data[i] == '\x1a')
+			{
+				m_Link->Close();
+				m_Link.reset();
+				return;
+			}
+		}
+	}
+
+
+	virtual void OnRemoteClosed(void) override
+	{
+		ASSERT(m_Link != nullptr);
+
+		LOGD("%p (%s:%d): Remote has closed the connection.", m_Link.get(), m_Link->GetRemoteIP().c_str(), m_Link->GetRemotePort());
+		m_Link.reset();
+	}
+
+
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
+	{
+		ASSERT(m_Link != nullptr);
+
+		LOGD("%p (%s:%d): Error %d in the cEchoLinkCallbacks: %s", m_Link.get(), m_Link->GetRemoteIP().c_str(), m_Link->GetRemotePort(), a_ErrorCode, a_ErrorMsg.c_str());
+		m_Link.reset();
+	}
+
+	/** The link attached to this callbacks instance. */
+	cTCPLinkPtr m_Link;
+};
+
+
+
+
+
+class cEchoServerCallbacks:
+	public cNetwork::cListenCallbacks
+{
+	virtual cTCPLink::cCallbacksPtr OnIncomingConnection(const AString & a_RemoteIPAddress, UInt16 a_RemotePort)
+	{
+		LOGD("New incoming connection(%s:%d).", a_RemoteIPAddress.c_str(), a_RemotePort);
+		return std::make_shared<cEchoLinkCallbacks>();
+	}
+
+	virtual void OnAccepted(cTCPLink & a_Link) override
+	{
+		LOGD("New client accepted (%s:%d), sending welcome message.", a_Link.GetRemoteIP().c_str(), a_Link.GetRemotePort());
+		// Send a welcome message to each connecting client:
+		a_Link.Send("Welcome to the simple echo server.\r\n");
+		LOGD("Welcome message queued.");
+	}
+
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
+	{
+		LOGWARNING("An error occured while listening for connections: %d (%s).", a_ErrorCode, a_ErrorMsg.c_str());
+	}
+};
+
+
+
+
+
+int main()
+{
+	LOGD("EchoServer: starting up");
+	cServerHandlePtr Server = cNetwork::Listen(9876, std::make_shared<cEchoServerCallbacks>());
+	if (!Server->IsListening())
+	{
+		LOGWARNING("Cannot listen on port 9876");
+		abort();
+	}
+	ASSERT(Server->IsListening());
+
+	// Wait for the user to terminate the server:
+	printf("Press enter to close the server.\n");
+	AString line;
+	std::getline(std::cin, line);
+
+	// Close the server and all its active connections:
+	LOG("Server terminating.");
+	Server->Close();
+	ASSERT(!Server->IsListening());
+	LOGD("Server has been closed.");
+
+	printf("Press enter to exit test.\n");
+	std::getline(std::cin, line);
+
+	LOG("Network test finished.");
+	return 0;
+}
+
+
+
+
diff --git a/tests/Network/Google.cpp b/tests/Network/Google.cpp
new file mode 100644
index 000000000..2b8830c24
--- /dev/null
+++ b/tests/Network/Google.cpp
@@ -0,0 +1,118 @@
+
+// Google.cpp
+
+// Implements a HTTP download of the google's front page using the LibEvent-based cNetwork API
+
+#include "Globals.h"
+#include <thread>
+#include "OSSupport/Event.h"
+#include "OSSupport/Network.h"
+
+
+
+
+
+/** Connect callbacks that send a HTTP GET request for google.com when connected. */
+class cHTTPConnectCallbacks:
+	public cNetwork::cConnectCallbacks
+{
+	cEvent & m_Event;
+	virtual void OnConnected(cTCPLink & a_Link) override
+	{
+		LOGD("Connected, sending HTTP GET");
+		if (!a_Link.Send("GET / HTTP/1.0\r\nHost:google.com\r\n\r\n"))
+		{
+			LOGWARNING("Sending HTTP GET failed");
+		}
+		LOGD("HTTP GET queued.");
+	}
+
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
+	{
+		LOGD("Error while connecting HTTP: %d (%s)", a_ErrorCode, a_ErrorMsg.c_str());
+		m_Event.Set();
+	}
+
+public:
+	cHTTPConnectCallbacks(cEvent & a_Event):
+		m_Event(a_Event)
+	{
+	}
+};
+
+
+
+
+
+/** cTCPLink callbacks that dump everything it received to the log. */
+class cDumpCallbacks:
+	public cTCPLink::cCallbacks
+{
+	cEvent & m_Event;
+	cTCPLinkPtr m_Link;
+
+	virtual void OnLinkCreated(cTCPLinkPtr a_Link) override
+	{
+		ASSERT(m_Link == nullptr);
+		m_Link = a_Link;
+	}
+
+	virtual void OnReceivedData(const char * a_Data, size_t a_Size) override
+	{
+		ASSERT(m_Link != nullptr);
+
+		// Log the incoming data size:
+		AString Hex;
+		CreateHexDump(Hex, a_Data, a_Size, 16);
+		LOGD("Incoming data: %u bytes:\n%s", static_cast<unsigned>(a_Size), Hex.c_str());
+	}
+
+	virtual void OnRemoteClosed(void) override
+	{
+		ASSERT(m_Link != nullptr);
+
+		LOGD("Remote has closed the connection.");
+		m_Link.reset();
+		m_Event.Set();
+	}
+
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
+	{
+		ASSERT(m_Link != nullptr);
+
+		LOGD("Error %d (%s) in the cDumpCallbacks.", a_ErrorCode, a_ErrorMsg.c_str());
+		m_Link.reset();
+		m_Event.Set();
+	}
+
+public:
+	cDumpCallbacks(cEvent & a_Event):
+		m_Event(a_Event)
+	{
+	}
+};
+
+
+
+
+
+int main()
+{
+	cEvent evtFinish;
+
+	LOGD("Network test: Connecting to google.com:80, reading front page via HTTP.");
+	if (!cNetwork::Connect("google.com", 80, std::make_shared<cHTTPConnectCallbacks>(evtFinish), std::make_shared<cDumpCallbacks>(evtFinish)))
+	{
+		LOGWARNING("Cannot queue connection to google.com");
+		abort();
+	}
+	LOGD("Connect request has been queued.");
+	
+	evtFinish.Wait();
+	LOGD("Network test finished");
+	return 0;
+}
+
+
+
+
diff --git a/tests/Network/NameLookup.cpp b/tests/Network/NameLookup.cpp
new file mode 100644
index 000000000..822a96baf
--- /dev/null
+++ b/tests/Network/NameLookup.cpp
@@ -0,0 +1,80 @@
+
+// NameLookup.cpp
+
+// Implements a DNS name lookup using the LibEvent-based cNetwork API
+
+#include "Globals.h"
+#include <thread>
+#include "OSSupport/Event.h"
+#include "OSSupport/Network.h"
+
+
+
+
+
+class cFinishLookupCallbacks:
+	public cNetwork::cResolveNameCallbacks
+{
+	cEvent & m_Event;
+
+	virtual void OnNameResolved(const AString & a_Name, const AString & a_IP) override
+	{
+		LOGD("%s resolves to IP %s", a_Name.c_str(), a_IP.c_str());
+	}
+
+	virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
+	{
+		LOGD("Error %d (%s) while performing lookup!", a_ErrorCode, a_ErrorMsg.c_str());
+		exit(a_ErrorCode);
+	}
+
+	virtual void OnFinished(void) override
+	{
+		LOGD("Resolving finished.");
+		m_Event.Set();
+	}
+
+public:
+	cFinishLookupCallbacks(cEvent & a_Event):
+		m_Event(a_Event)
+	{
+	}
+};
+
+
+
+
+
+int main()
+{
+	cEvent evtFinish;
+
+	// Look up google.com (has multiple IP addresses):
+	LOGD("Network test: Looking up google.com");
+	if (!cNetwork::HostnameToIP("google.com", std::make_shared<cFinishLookupCallbacks>(evtFinish)))
+	{
+		LOGWARNING("Cannot resolve google.com to IP");
+		abort();
+	}
+	LOGD("Name lookup has been successfully queued");
+	evtFinish.Wait();
+	LOGD("Lookup finished.");
+
+	// Look up 8.8.8.8 (Google free DNS):
+	LOGD("Network test: Looking up IP 8.8.8.8");
+	if (!cNetwork::IPToHostName("8.8.8.8", std::make_shared<cFinishLookupCallbacks>(evtFinish)))
+	{
+		LOGWARNING("Cannot resolve 8.8.8.8 to name");
+		abort();
+	}
+	LOGD("IP lookup has been successfully queued");
+	evtFinish.Wait();
+	LOGD("IP lookup finished.");
+
+	LOGD("Network test finished");
+	return 0;
+}
+
+
+
+