refine /api/v1/summaries, with code and server id.

@@ -267,9 +267,14 @@ SrsGoApiSummaries::~SrsGoApiSummaries()
 
 int SrsGoApiSummaries::serve_http(ISrsHttpResponseWriter* w, ISrsHttpMessage* r)
 {
+    SrsStatistic* stat = SrsStatistic::instance();
+    
     SrsJsonObject* obj = SrsJsonAny::object();
     SrsAutoFree(SrsJsonObject, obj);
     
+    obj->set("code", SrsJsonAny::integer(ERROR_SUCCESS));
+    obj->set("server", SrsJsonAny::integer(stat->server_id()));
+    
     srs_api_dump_summaries(obj);
     
     return srs_api_response(w, r, obj->dumps());

@@ -35,7 +35,7 @@ using namespace std;
 #include <srs_kernel_utility.hpp>
 #include <srs_protocol_amf0.hpp>
 
-int64_t srs_gvid = getpid();
+int64_t srs_gvid = getpid() * 3;
 
 int64_t srs_generate_id()
 {