diff --git a/plugin/protocol/http2/src/http2_stream.cpp b/plugin/protocol/http2/src/http2_stream.cpp
index a45d2fb..cf8593b 100644
--- a/plugin/protocol/http2/src/http2_stream.cpp
+++ b/plugin/protocol/http2/src/http2_stream.cpp
@@ -337,36 +337,29 @@ int h2_half_ops_field_write(struct tfe_http_half * half, const struct http_field
 	struct tfe_h2_header *h2_header = &(half_private->header);
 	struct tfe_h2_field *h2_field=NULL,*peer_h2_field=NULL;
 
-	TAILQ_FOREACH(h2_field, &h2_header->h2_field_list, next)
-	{
-		if (http_field_name_compare(h2_field->field, field) != 0) continue;
-			peer_h2_field = h2_field;
-		break;
-	}
-
-	if (peer_h2_field != NULL && value != NULL)
-	{
-		FREE(&(peer_h2_field->nv.value));
-		peer_h2_field->nv.value = (uint8_t*)tfe_strdup(value);
-		peer_h2_field->nv.valuelen = strlen(value);
-	}
-	else if (peer_h2_field != NULL && value == NULL)
-	{
-		TAILQ_REMOVE(&h2_header->h2_field_list, peer_h2_field, next);
-		free(peer_h2_field->nv.name);
-		free(peer_h2_field->nv.value);
-		free(peer_h2_field);
-		h2_header->nvlen--;
-	}
-	else if (peer_h2_field == NULL && value != NULL)
+	if (value != NULL)
 	{
 		tfe_h2_header_add_field(h2_header, field, value, 1);
 	}
 	else
 	{
-		return -1;
-	}
+		bool delete_success = false;
 
+		TAILQ_FOREACH_SAFE(h2_field, &h2_header->h2_field_list, next, peer_h2_field)
+		{
+			if (http_field_name_compare(h2_field->field, field) != 0)
+				continue;
+
+			TAILQ_REMOVE(&h2_header->h2_field_list, h2_field, next);
+			free(h2_field->nv.name);
+			free(h2_field->nv.value);
+			free(h2_field);
+			h2_header->nvlen--;
+			delete_success = true;
+		}
+
+		return delete_success ? 0 : -ENOENT;
+	}
 	return 0;
 }
 
@@ -779,13 +772,15 @@ nghttp2_frame_submit_built_resp(struct tfe_h2_stream *h2_stream_info,
 	char str_sz_evbuf_body[TFE_STRING_MAX];
 	snprintf(str_sz_evbuf_body, sizeof(str_sz_evbuf_body) - 1, "%lu", evbuffer_get_length(body->evbuf_body));
 
-	const static struct http_field_name cont_field = {TFE_HTTP_CONT_LENGTH, NULL};
+	const static struct http_field_name cont_field = {TFE_HTTP_CONT_LENGTH, NULL};	
+	tfe_http_field_write(&pangu_resp->half_public, &cont_field, NULL);
 	tfe_http_field_write(&pangu_resp->half_public, &cont_field, str_sz_evbuf_body);
 
 	if (body->gzip != HTTP2_CONTENT_ENCODING_NONE)
 	{
 		const static struct http_field_name encoding_field = {TFE_HTTP_CONT_ENCODING, NULL};
-		const char *content_encoding = method_idx_to_str(body->gzip);
+		const char *content_encoding = method_idx_to_str(body->gzip);		
+		tfe_http_field_write(&pangu_resp->half_public, &encoding_field, NULL);
 		tfe_http_field_write(&pangu_resp->half_public, &encoding_field, content_encoding);
 	}
 
@@ -826,7 +821,8 @@ nghttp2_frame_submit_built_req(struct tfe_h2_stream *h2_stream_info,
 	char str_sz_evbuf_body[TFE_STRING_MAX];
 	snprintf(str_sz_evbuf_body, sizeof(str_sz_evbuf_body) - 1, "%lu", evbuffer_get_length(body->evbuf_body));
 
-	const static struct http_field_name encoding_field = {TFE_HTTP_CONT_LENGTH, NULL};
+	const static struct http_field_name encoding_field = {TFE_HTTP_CONT_LENGTH, NULL};	
+	tfe_http_field_write(&plugin_built_req->half_public, &encoding_field, NULL);
 	tfe_http_field_write(&plugin_built_req->half_public, &encoding_field, str_sz_evbuf_body);
 
 	nghttp2_data_provider data_prd;