完成HTTP请求侧解析调试，可以解析请求的URL。

* 增加插件管理功能（简单实现），可以调用解析层插件；
* 调整HTTP请求侧解析回调函数实现；
* 增加hexdump工具函数；

platform/src/proxy.cpp

@@ -32,6 +32,7 @@
 #include <kni_acceptor.h>
 #include <tcp_stream.h>
 #include <MESA/MESA_prof_load.h>
+#include <tfe_plugin.h>
 
 static int signals[] = {SIGTERM, SIGQUIT, SIGHUP, SIGPIPE, SIGUSR1};
 
@@ -230,6 +231,16 @@ int main(int argc, char *argv[])
 	g_default_proxy->kni_acceptor_handler = kni_acceptor_init(g_default_proxy, main_profile, g_default_logger);
 	CHECK_OR_EXIT(g_default_proxy->kni_acceptor_handler, "Failed at init KNI acceptor. Exit. ");
 
+	/* PLUGIN INIT */
+	unsigned int plugin_iterator = 0;
+	for(struct tfe_plugin * plugin_iter =  tfe_plugin_iterate(&plugin_iterator);
+		plugin_iter != NULL; plugin_iter = tfe_plugin_iterate(&plugin_iterator))
+	{
+		ret = plugin_iter->on_init(g_default_proxy);
+		CHECK_OR_EXIT(ret >= 0, "Plugin %s init failed. Exit. ", plugin_iter->symbol);
+		TFE_LOG_INFO(g_default_logger, "Plugin %s initialized. ", plugin_iter->symbol);
+	}
+
     for (size_t i = 0; i < (sizeof(signals) / sizeof(int)); i++)
     {
         g_default_proxy->sev[i] = evsignal_new(g_default_proxy->evbase, signals[i], __signal_handler_cb, g_default_proxy);