async support (more or less)HEADmaster

2 files changed, 11 insertions, 1 deletions

diff --git a/jsonrpc.c b/jsonrpc.c
index a02bbaa..54ad96c 100644
--- a/jsonrpc.c
+++ b/jsonrpc.c
@@ -6,6 +6,9 @@
 #include <jansson.h>
 #include "jsonrpc.h"
 
+int dummy = 0;
+json_t *jsonrpc_async_dummy = (json_t *)&dummy;
+
 json_t *jsonrpc_error_object(int code, json_t *data)
 {
 	// reference to data is stolen
@@ -199,7 +202,11 @@ json_t *jsonrpc_handle_request_single(void *apparg, json_t *json_request, struct
 		json_result = NULL;
 	} else {
 		if (rc==0) {
-			json_response = jsonrpc_result_response(json_id, json_result);
+			if (json_result == jsonrpc_async_dummy)
+				json_response = NULL;
+			else
+				json_response = jsonrpc_result_response(
+					json_id, json_result);
 		} else if (rc==JSONRPC_INVALID_PARAMS) {
 			json_response = jsonrpc_error_response(json_id,
 					jsonrpc_error_object(JSONRPC_INVALID_PARAMS, json_result));
diff --git a/jsonrpc.h b/jsonrpc.h
index d4a34f8..1a113ef 100644
--- a/jsonrpc.h
+++ b/jsonrpc.h
@@ -6,6 +6,8 @@
 #define JSONRPC_INVALID_PARAMS -32602
 #define JSONRPC_INTERNAL_ERROR -32603
 
+extern json_t *jsonrpc_async_dummy;
+
 typedef int (*jsonrpc_method_prototype)(void *apparg, json_t *json_params, json_t **result);
 struct jsonrpc_method_entry_t
 {
@@ -15,4 +17,5 @@ struct jsonrpc_method_entry_t
 };
 char *jsonrpc_handler(void *apparg, const char *input, size_t input_len, struct jsonrpc_method_entry_t method_table[]);
 
+json_t *jsonrpc_result_response(json_t *json_id, json_t *json_result);
 json_t *jsonrpc_error_object(int code, json_t *data);