diff --git a/trunk/src/app/srs_app_http_api.cpp b/trunk/src/app/srs_app_http_api.cpp
index 608d779c2..7c9980aeb 100644
--- a/trunk/src/app/srs_app_http_api.cpp
+++ b/trunk/src/app/srs_app_http_api.cpp
@@ -213,48 +213,56 @@ int SrsApiConfigsLogs::do_process_request(SrsSocket* skt, SrsHttpMessage* req)
 {
     int ret = ERROR_SUCCESS;
     
-    if (req->is_http_put()) {
-        srs_trace("http api PUT logs, req is: %s", req->body().c_str());
+    // HTTP GET
+    if (req->is_http_get()) {
+        std::stringstream ss;
+        ss << JOBJECT_START
+            << JFIELD_ERROR(ERROR_SUCCESS) << JFIELD_CONT
+            << JFIELD_ORG("data", JOBJECT_START)
+                << JFIELD_STR("tank", (_srs_config->get_log_tank_file()? "file":"console")) << JFIELD_CONT
+                << JFIELD_STR("level", _srs_config->get_log_level()) << JFIELD_CONT
+                << JFIELD_STR("cwd", _srs_config->cwd()) << JFIELD_CONT
+                << JFIELD_STR("file", _srs_config->get_log_file())
+            << JOBJECT_END
+            << JOBJECT_END;
         
-        SrsJsonAny* json = SrsJsonAny::loads(req->body_raw());
-        SrsAutoFree(SrsJsonAny, json);
-        
-        if (json->is_object()) {
-            SrsJsonObject* o = json->to_object();
-            SrsJsonAny* prop = NULL;
-            if ((prop = o->ensure_property_string("file")) != NULL && _srs_config->set_log_file(prop->to_str())) {
-                if ((ret = _srs_config->force_reload_log_file()) != ERROR_SUCCESS) {
-                    return response_error(skt, req, ret, "reload log file failed");
-                }
-                srs_warn("http api reload log file to %s", prop->to_str().c_str());
-            }
-            if ((prop = o->ensure_property_string("tank")) != NULL && _srs_config->set_log_tank(prop->to_str())) {
-                if ((ret = _srs_config->force_reload_log_tank()) != ERROR_SUCCESS) {
-                    return response_error(skt, req, ret, "reload log tank failed");
-                }
-                srs_warn("http api reload log tank to %s", prop->to_str().c_str());
-            }
-            if ((prop = o->ensure_property_string("level")) != NULL && _srs_config->set_log_level(prop->to_str())) {
-                if ((ret = _srs_config->force_reload_log_level()) != ERROR_SUCCESS) {
-                    return response_error(skt, req, ret, "reload log level failed");
-                }
-                srs_warn("http api reload log level to %s", prop->to_str().c_str());
-            }
-        }
+        return res_json(skt, req, ss.str());
     }
     
-    std::stringstream ss;
-    ss << JOBJECT_START
-        << JFIELD_ERROR(ERROR_SUCCESS) << JFIELD_CONT
-        << JFIELD_ORG("data", JOBJECT_START)
-            << JFIELD_STR("tank", (_srs_config->get_log_tank_file()? "file":"console")) << JFIELD_CONT
-            << JFIELD_STR("level", _srs_config->get_log_level()) << JFIELD_CONT
-            << JFIELD_STR("cwd", _srs_config->cwd()) << JFIELD_CONT
-            << JFIELD_STR("file", _srs_config->get_log_file())
-        << JOBJECT_END
-        << JOBJECT_END;
+    // HTTP PUT
+    srs_trace("http api PUT logs, req is: %s", req->body().c_str());
     
-    return res_json(skt, req, ss.str());
+    SrsJsonAny* json = SrsJsonAny::loads(req->body_raw());
+    SrsAutoFree(SrsJsonAny, json);
+    
+    if (!json) {
+        return response_error(skt, req, ERROR_HTTP_API_LOGS, "invalid PUT json");
+    } else if (!json->is_object()) {
+        return response_error(skt, req, ERROR_HTTP_API_LOGS, "invalid PUT json logs params");
+    }
+    
+    SrsJsonObject* o = json->to_object();
+    SrsJsonAny* prop = NULL;
+    if ((prop = o->ensure_property_string("file")) != NULL && _srs_config->set_log_file(prop->to_str())) {
+        if ((ret = _srs_config->force_reload_log_file()) != ERROR_SUCCESS) {
+            return response_error(skt, req, ret, "reload log file failed");
+        }
+        srs_warn("http api reload log file to %s", prop->to_str().c_str());
+    }
+    if ((prop = o->ensure_property_string("tank")) != NULL && _srs_config->set_log_tank(prop->to_str())) {
+        if ((ret = _srs_config->force_reload_log_tank()) != ERROR_SUCCESS) {
+            return response_error(skt, req, ret, "reload log tank failed");
+        }
+        srs_warn("http api reload log tank to %s", prop->to_str().c_str());
+    }
+    if ((prop = o->ensure_property_string("level")) != NULL && _srs_config->set_log_level(prop->to_str())) {
+        if ((ret = _srs_config->force_reload_log_level()) != ERROR_SUCCESS) {
+            return response_error(skt, req, ret, "reload log level failed");
+        }
+        srs_warn("http api reload log level to %s", prop->to_str().c_str());
+    }
+    
+    return response_error(skt, req, ret, "PUT logs success.");
 }
 
 SrsApiVersion::SrsApiVersion()
diff --git a/trunk/src/app/srs_app_json.cpp b/trunk/src/app/srs_app_json.cpp
index 557d23bee..8e8cfdfdf 100644
--- a/trunk/src/app/srs_app_json.cpp
+++ b/trunk/src/app/srs_app_json.cpp
@@ -306,6 +306,10 @@ SrsJsonArray* SrsJsonAny::array()
 #ifdef SRS_JSON_USE_NXJSON
 SrsJsonAny* srs_json_parse_tree_nx_json(const nx_json* node)
 {
+    if (!node) {
+        return NULL;
+    }
+    
     switch (node->type) {
         case NX_JSON_NULL:
             return SrsJsonAny::null();
@@ -338,6 +342,7 @@ SrsJsonAny* srs_json_parse_tree_nx_json(const nx_json* node)
             return arr;
         }
     }
+    
     return NULL;
 }
 
@@ -352,8 +357,13 @@ SrsJsonAny* SrsJsonAny::loads(char* str)
     }
     
     const nx_json* o = nx_json_parse(str, 0);
+    
     SrsJsonAny* json = srs_json_parse_tree_nx_json(o);
-    nx_json_free(o);
+    
+    if (o) {
+        nx_json_free(o);
+    }
+    
     return json;
 }
 #endif
@@ -529,7 +539,7 @@ extern "C" {
 
 // redefine NX_JSON_REPORT_ERROR to use custom error reporting
 #ifndef NX_JSON_REPORT_ERROR
-#define NX_JSON_REPORT_ERROR(msg, p) srs_error("NXJSON PARSE ERROR (%d): " msg " at %s\n", __LINE__, p)
+#define NX_JSON_REPORT_ERROR(msg, p) srs_warn("NXJSON PARSE ERROR (%d): " msg " at %s", __LINE__, p)
 #endif
 
 #define IS_WHITESPACE(c) ((unsigned char)(c)<=(unsigned char)' ')
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 1676dd465..0ffbd80b4 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "103"
+#define VERSION_REVISION "104"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "srs"
diff --git a/trunk/src/kernel/srs_kernel_error.hpp b/trunk/src/kernel/srs_kernel_error.hpp
index 4279b6bc8..1a1a800fc 100644
--- a/trunk/src/kernel/srs_kernel_error.hpp
+++ b/trunk/src/kernel/srs_kernel_error.hpp
@@ -183,6 +183,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define ERROR_HTTP_HANDLER_INVALID          804
 #define ERROR_HTTP_OPEN_FILE                805
 #define ERROR_HTTP_READ_FILE                806
+#define ERROR_HTTP_API_LOGS                 807
 
 // system control message, 
 // not an error, but special control logic.