diff --git a/trunk/src/app/srs_app_http.cpp b/trunk/src/app/srs_app_http.cpp
index 202aae90a..0488907d5 100644
--- a/trunk/src/app/srs_app_http.cpp
+++ b/trunk/src/app/srs_app_http.cpp
@@ -169,7 +169,7 @@ int SrsHttpHandler::best_match(const char* path, int length, SrsHttpHandlerMatch
         }
         
         const char* p = NULL;
-        for (p = path + 1; p - path < length && *p != __PATH_SEP; p++) {
+        for (p = path + 1; p - path < length && *p != SRS_CONSTS_HTTP_PATH_SEP; p++) {
         }
         
         // whether the handler can handler the node.
@@ -541,7 +541,7 @@ SrsHttpMessage::SrsHttpMessage()
     _uri = new SrsHttpUri();
     _match = NULL;
     _requires_crossdomain = false;
-    _http_ts_send_buffer = new char[SRS_CONSTS_HTTP_TS_SEND_BUFFER_SIZE];
+    _http_ts_send_buffer = new char[__SRS_HTTP_TS_SEND_BUFFER_SIZE];
 }
 
 SrsHttpMessage::~SrsHttpMessage()
diff --git a/trunk/src/app/srs_app_http.hpp b/trunk/src/app/srs_app_http.hpp
index aa800665f..365272b21 100644
--- a/trunk/src/app/srs_app_http.hpp
+++ b/trunk/src/app/srs_app_http.hpp
@@ -63,12 +63,7 @@ class SrsHttpHandler;
 #define __SRS_CRLFCRLF "\r\n\r\n" // 0x0D0A0D0A
 
 // @see SrsHttpMessage._http_ts_send_buffer
-#define SRS_CONSTS_HTTP_TS_SEND_BUFFER_SIZE 4096
-
-// linux path seprator
-#define __PATH_SEP '/'
-// query string seprator
-#define __QUERY_SEP '?'
+#define __SRS_HTTP_TS_SEND_BUFFER_SIZE 4096
 
 // compare the path.
 // full compare, extractly match.
diff --git a/trunk/src/app/srs_app_http_conn.cpp b/trunk/src/app/srs_app_http_conn.cpp
index 56af15ecc..a91cd4e07 100644
--- a/trunk/src/app/srs_app_http_conn.cpp
+++ b/trunk/src/app/srs_app_http_conn.cpp
@@ -272,7 +272,7 @@ int SrsHttpVhost::response_flv_file(SrsSocket* skt, SrsHttpMessage* req, string
     
     while (left > 0) {
         ssize_t nread = -1;
-        if ((ret = fs.read(buf, SRS_CONSTS_HTTP_TS_SEND_BUFFER_SIZE, &nread)) != ERROR_SUCCESS) {
+        if ((ret = fs.read(buf, __SRS_HTTP_TS_SEND_BUFFER_SIZE, &nread)) != ERROR_SUCCESS) {
             srs_warn("read file %s failed, ret=%d", fullpath.c_str(), ret);
             break;
         }
@@ -377,7 +377,7 @@ int SrsHttpVhost::response_flv_file2(SrsSocket* skt, SrsHttpMessage* req, string
     // send data
     while (left > 0) {
         ssize_t nread = -1;
-        if ((ret = fs.read(buf, SRS_CONSTS_HTTP_TS_SEND_BUFFER_SIZE, &nread)) != ERROR_SUCCESS) {
+        if ((ret = fs.read(buf, __SRS_HTTP_TS_SEND_BUFFER_SIZE, &nread)) != ERROR_SUCCESS) {
             return ret;
         }
         
@@ -427,7 +427,7 @@ int SrsHttpVhost::response_ts_file(SrsSocket* skt, SrsHttpMessage* req, string f
     
     while (left > 0) {
         ssize_t nread = -1;
-        if ((ret = fs.read(buf, SRS_CONSTS_HTTP_TS_SEND_BUFFER_SIZE, &nread)) != ERROR_SUCCESS) {
+        if ((ret = fs.read(buf, __SRS_HTTP_TS_SEND_BUFFER_SIZE, &nread)) != ERROR_SUCCESS) {
             srs_warn("read file %s failed, ret=%d", fullpath.c_str(), ret);
             break;
         }
diff --git a/trunk/src/app/srs_app_json.cpp b/trunk/src/app/srs_app_json.cpp
index 8e8cfdfdf..653bc8c72 100644
--- a/trunk/src/app/srs_app_json.cpp
+++ b/trunk/src/app/srs_app_json.cpp
@@ -28,7 +28,7 @@ using namespace std;
 #include <srs_kernel_log.hpp>
 #include <srs_kernel_error.hpp>
 
-#ifdef SRS_JSON_USE_NXJSON
+#ifdef __SRS_JSON_USE_NXJSON
 
 ////////////////////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////
@@ -303,7 +303,7 @@ SrsJsonArray* SrsJsonAny::array()
     return new SrsJsonArray();
 }
 
-#ifdef SRS_JSON_USE_NXJSON
+#ifdef __SRS_JSON_USE_NXJSON
 SrsJsonAny* srs_json_parse_tree_nx_json(const nx_json* node)
 {
     if (!node) {
@@ -490,7 +490,7 @@ void SrsJsonArray::add(SrsJsonAny* value)
     properties.push_back(value);
 }
 
-#ifdef SRS_JSON_USE_NXJSON
+#ifdef __SRS_JSON_USE_NXJSON
 
 ////////////////////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////
diff --git a/trunk/src/app/srs_app_json.hpp b/trunk/src/app/srs_app_json.hpp
index bca97a5b7..dcda34975 100644
--- a/trunk/src/app/srs_app_json.hpp
+++ b/trunk/src/app/srs_app_json.hpp
@@ -34,8 +34,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 // whether use nxjson
 // @see: https://bitbucket.org/yarosla/nxjson
-#undef SRS_JSON_USE_NXJSON
-#define SRS_JSON_USE_NXJSON
+#undef __SRS_JSON_USE_NXJSON
+#define __SRS_JSON_USE_NXJSON
 
 ////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////
diff --git a/trunk/src/kernel/srs_kernel_consts.hpp b/trunk/src/kernel/srs_kernel_consts.hpp
index be4bba2af..25f74f82f 100644
--- a/trunk/src/kernel/srs_kernel_consts.hpp
+++ b/trunk/src/kernel/srs_kernel_consts.hpp
@@ -160,6 +160,11 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ///////////////////////////////////////////////////////////
 // HTTP consts values
 ///////////////////////////////////////////////////////////
+// linux path seprator
+#define SRS_CONSTS_HTTP_PATH_SEP '/'
+// query string seprator
+#define SRS_CONSTS_HTTP_QUERY_SEP '?'
+
 // 6.1.1 Status Code and Reason Phrase
 #define SRS_CONSTS_HTTP_Continue                       100
 #define SRS_CONSTS_HTTP_SwitchingProtocols             101