diff --git a/plugin/protocol/http/include/internal/http_half.h b/plugin/protocol/http/include/internal/http_half.h
index f244cd6..90af617 100644
--- a/plugin/protocol/http/include/internal/http_half.h
+++ b/plugin/protocol/http/include/internal/http_half.h
@@ -62,6 +62,7 @@ struct http_half_private
 	short minor;
 
 	/* URI */
+    char * host;
 	struct evbuffer * evbuf_uri;
 	char * url_storage;
 
diff --git a/plugin/protocol/http/src/http_half.cpp b/plugin/protocol/http/src/http_half.cpp
index 8044812..07bfa1a 100644
--- a/plugin/protocol/http/src/http_half.cpp
+++ b/plugin/protocol/http/src/http_half.cpp
@@ -152,7 +152,8 @@ void __hf_public_req_fill_from_private(struct http_half_private * hf_private, st
 	hf_private->method_or_status = (enum tfe_http_std_method) parser->method;
 
 	const static struct http_field_name __host_field_name = {TFE_HTTP_HOST, NULL};
-	hf_req_spec->host = (char *) tfe_http_field_read(hf_public, &__host_field_name);
+	hf_private->host = strdup((char *) tfe_http_field_read(hf_public, &__host_field_name));
+	hf_req_spec->host = hf_private->host;
 
 	/* uri is stored in underlay evbuffer, we need to append a terminal zero */
 	static const char __zero = 0;
@@ -701,6 +702,12 @@ void hf_private_destory(struct http_half_private * hf_private)
 		hf_private->evbuf_uri = NULL;
 	}
 
+	if(hf_private->host)
+	{
+		free(hf_private->host);
+		hf_private->host = NULL;
+	}
+
 	if (hf_private->url_storage)
 	{
 		free(hf_private->url_storage);