Added simple TCP socket server to handle requests and TCP socket client to test and measure.

server/task.cpp

@@ -0,0 +1,23 @@
+#include "task.h"
+#include <cstring>
+#include <sstream>
+
+using namespace std;
+
+int cnt[256];
+
+string Task(const string &message)
+{                
+	memset(cnt, 0, sizeof(cnt));
+	for (int i = 0; i < (int)message.length(); i++)
+	{
+		cnt[(int)(unsigned char)message[i]]++;
+	}
+	ostringstream result;
+	for (int i = 0; i < 256; i++)
+	{
+		if (cnt[i] == 0) continue;
+		result << i << ":" << cnt[i] << ";";
+	}
+	return result.str();
+}