fix hls bug, refine config and log, according to clion of jetbrains. 0.9.216.

@@ -208,6 +208,7 @@ Supported operating systems and hardware:
 * 2013-10-17, Created.<br/>
 
 ## History
+* v1.0, 2014-09-26, fix hls bug, refine config and log, according to clion of jetbrains. 0.9.216. 
 * v1.0, 2014-09-25, fix [#177](https://github.com/winlinvip/simple-rtmp-server/issues/177), dvr segment add config dvr_wait_keyframe. 0.9.213.
 * v1.0, 2014-08-28, fix [#167](https://github.com/winlinvip/simple-rtmp-server/issues/167), add openssl includes to utest. 0.9.209.
 * v1.0, 2014-08-27, max connections is 32756, for st use mmap default. 0.9.209

@@ -50,16 +50,6 @@ using namespace _srs_internal;
 
 #define SRS_WIKI_URL_LOG "https://github.com/winlinvip/simple-rtmp-server/wiki/SrsLog"
 
-#define FILE_OFFSET(fd) lseek(fd, 0, SEEK_CUR)
-
-int64_t FILE_SIZE(int fd)
-{
-    int64_t pre = FILE_OFFSET(fd);
-    int64_t pos = lseek(fd, 0, SEEK_END);
-    lseek(fd, pre, SEEK_SET);
-    return pos;
-}
-
 // '\n'
 #define __LF (char)0x0a
 
@@ -407,6 +397,7 @@ int SrsConfig::reload()
     int ret = ERROR_SUCCESS;
 
     SrsConfig conf;
+
     if ((ret = conf.parse_file(config_file.c_str())) != ERROR_SUCCESS) {
         srs_error("ignore config reloader parse file failed. ret=%d", ret);
         ret = ERROR_SUCCESS;
@@ -414,6 +405,12 @@ int SrsConfig::reload()
     }
     srs_info("config reloader parse file success.");
 
+    if ((ret = conf.check_config()) != ERROR_SUCCESS) {
+        srs_error("ignore config reloader check config failed. ret=%d", ret);
+        ret = ERROR_SUCCESS;
+        return ret;
+    }
+    
     return reload_conf(&conf);
 }
 
@@ -1074,6 +1071,12 @@ int SrsConfig::parse_options(int argc, char** argv)
     ret = parse_file(config_file.c_str());
     
     if (test_conf) {
+        // the parse_file never check the config,
+        // we check it when user requires check config file.
+        if (ret == ERROR_SUCCESS) {
+            ret = check_config();
+        }
+
         if (ret == ERROR_SUCCESS) {
             srs_trace("config file is ok");
             exit(0);
@@ -1083,6 +1086,25 @@ int SrsConfig::parse_options(int argc, char** argv)
         }
     }
 
+    ////////////////////////////////////////////////////////////////////////
+    // check log name and level
+    ////////////////////////////////////////////////////////////////////////
+    if (true) {
+        std::string log_filename = this->get_log_file();
+        if (get_log_tank_file() && log_filename.empty()) {
+            ret = ERROR_SYSTEM_CONFIG_INVALID;
+            srs_error("must specifies the file to write log to. ret=%d", ret);
+            return ret;
+        }
+        if (get_log_tank_file()) {
+            srs_trace("write log to file %s", log_filename.c_str());
+            srs_trace("you can: tailf %s", log_filename.c_str());
+            srs_trace("@see: %s", SRS_WIKI_URL_LOG);
+        } else {
+            srs_trace("write log to console");
+        }
+    }
+    
     return ret;
 }
 
@@ -1190,6 +1212,8 @@ int SrsConfig::check_config()
 {
     int ret = ERROR_SUCCESS;
 
+    srs_trace("srs checking config...");
+    
     vector<SrsConfDirective*> vhosts = get_vhosts();
 
     ////////////////////////////////////////////////////////////////////////
@@ -1629,7 +1653,7 @@ int SrsConfig::parse_buffer(SrsConfigBuffer* buffer)
         return ret;
     }
 
-    return check_config();
+    return ret;
 }
 
 string SrsConfig::cwd()

@@ -340,6 +340,11 @@ private:
     * parse the config file, which is specified by cli.
     */
     virtual int parse_file(const char* filename);
+public:
+    /**
+    * check the parsed config.
+    */
+    virtual int check_config();
 protected:
     /**
     * parse config from the buffer.
@@ -347,11 +352,6 @@ protected:
     * @remark, use protected for the utest to override with mock.
     */
     virtual int parse_buffer(_srs_internal::SrsConfigBuffer* buffer);
-private:
-    /**
-    * check the parsed config.
-    */
-    virtual int check_config();
 // global env
 public:
     /**

@@ -38,7 +38,7 @@ SrsStageInfo::SrsStageInfo(int _stage_id)
 {
     stage_id = _stage_id;
     nb_clients = 0;
-    age = printed_age = 0;
+    age = 0;
     
     update_print_time();
     

@@ -40,7 +40,6 @@ public:
     int nb_clients;
 public:
     int64_t age;
-    int64_t printed_age;
 public:
     SrsStageInfo(int _stage_id);
     virtual ~SrsStageInfo();

@@ -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 "215"
+#define VERSION_REVISION "216"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"

@@ -170,6 +170,11 @@ int main(int argc, char** argv)
         return ret;
     }
 
+    // we check the config when the log initialized.
+    if ((ret = _srs_config->check_config()) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
     srs_trace("srs(simple-rtmp-server) "RTMP_SIG_SRS_VERSION);
     srs_trace("license: "RTMP_SIG_SRS_LICENSE);
     srs_trace("authors: "RTMP_SIG_SRS_PRIMARY_AUTHROS);