Refactoring into separate .hpp and .cpp files.

example-client.cpp

@@ -1,17 +1,12 @@
-#define EASYWSCLIENT_COMPILATION_UNIT
 #include "easywsclient.hpp"
+#include "easywsclient.cpp" // <-- include only if you don't want compile separately
 #include <assert.h>
 #include <stdio.h>
 #include <string>
 
-// N.B. A real application should abuse a global variable like this...
-// (gets messy if threads are involved)
-std::string message;
-
 void handle_message(const std::string & message)
 {
     printf(">>> %s\n", message.c_str());
-    ::message = message;
 }
 
 int main()
@@ -21,7 +16,7 @@ int main()
     assert(ws);
     ws->send("goodbye");
     ws->send("hello");
-    while (message != "world") {
+    while (true) {
         ws->poll();
         ws->dispatch(handle_message);
     }