refine the config structure, compatible with SRS1/2

+listen 1935;
+pid ./objs/srs.pid;
+srs_log_tank console;
+srs_log_level trace;
+max_connections 1000;
+daemon off;
+http_api {
+    enabled on;
+    listen 1985;
+    crossdomain on;
+    raw_api {
+        enabled on;
+        allow_reload on;
+        allow_query on;
+    }
+}
+# for SRS1.
+http_stream {
+    enabled on;
+    listen 8080;
+    dir ./objs/nginx/html;
+}
+vhost __defaultVhost__ {
+    # for SRS2.
+    refer github.com github.io;
+    refer_publish github.com github.io;
+    refer_play github.com github.io;
+    
+    # for SRS1.
+    http {
+        enabled on;
+        mount [vhost]/hls;
+        dir ./objs/nginx/html/hls;
+    }
+}

@@ -230,6 +230,81 @@ stream_caster {
 vhost __defaultVhost__ {
 }
 
+# the vhost for antisuck.
+vhost refer.anti_suck.com {
+    # refer hotlink-denial.
+    refer {
+        # whether enable the refer hotlink-denial.
+        # default: off.
+        enabled         on;
+        # the common refer for play and publish.
+        # if the page url of client not in the refer, access denied.
+        # if not specified this field, allow all.
+        # default: not specified.
+        all           github.com github.io;
+        # refer for publish clients specified.
+        # the common refer is not overrided by this.
+        # if not specified this field, allow all.
+        # default: not specified.
+        publish   github.com github.io;
+        # refer for play clients specified.
+        # the common refer is not overrided by this.
+        # if not specified this field, allow all.
+        # default: not specified.
+        play      github.com github.io;
+    }
+}
+
+# vhost for bandwidth check
+# generally, the bandcheck vhost must be: bandcheck.srs.com,
+# or need to modify the vhost of client.
+vhost bandcheck.srs.com {
+    enabled         on;
+    chunk_size      65000;
+    # bandwidth check config.
+    bandcheck {
+        # whether support bandwidth check,
+        # default: off.
+        enabled         on;
+        # the key for server to valid,
+        # if invalid key, server disconnect and abort the bandwidth check.
+        key             "35c9b402c12a7246868752e2878f7e0e";
+        # the interval in seconds for bandwidth check,
+        # server donot allow new test request.
+        # default: 30
+        interval        30;
+        # the max available check bandwidth in kbps.
+        # to avoid attack of bandwidth check.
+        # default: 1000
+        limit_kbps      4000;
+    }
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 # the security to allow or deny clients.
 vhost security.srs.com {
     # security for host to allow or deny clients.
@@ -952,25 +1027,6 @@ vhost stream.control.com {
     publish_normal_timeout  7000;
 }
 
-# the vhost for antisuck.
-vhost refer.anti_suck.com {
-    # the common refer for play and publish.
-    # if the page url of client not in the refer, access denied.
-    # if not specified this field, allow all.
-    # default: not specified.
-    refer           github.com github.io;
-    # refer for publish clients specified.
-    # the common refer is not overrided by this.
-    # if not specified this field, allow all.
-    # default: not specified.
-    refer_publish   github.com github.io;
-    # refer for play clients specified.
-    # the common refer is not overrided by this.
-    # if not specified this field, allow all.
-    # default: not specified.
-    refer_play      github.com github.io;
-}
-
 # the vhost which forward publish streams.
 vhost same.vhost.forward.srs.com {
     # forward all publish stream to the specified server.
@@ -1003,31 +1059,6 @@ vhost exec.srs.com {
     }
 }
 
-# vhost for bandwidth check
-# generally, the bandcheck vhost must be: bandcheck.srs.com,
-# or need to modify the vhost of client.
-vhost bandcheck.srs.com {
-    enabled         on;
-    chunk_size      65000;
-    # bandwidth check config.
-    bandcheck {
-        # whether support bandwidth check,
-        # default: off.
-        enabled         on;
-        # the key for server to valid,
-        # if invalid key, server disconnect and abort the bandwidth check.
-        key             "35c9b402c12a7246868752e2878f7e0e";
-        # the interval in seconds for bandwidth check,
-        # server donot allow new test request.
-        # default: 30
-        interval        30;
-        # the max available check bandwidth in kbps.
-        # to avoid attack of bandwidth check.
-        # default: 1000
-        limit_kbps      4000;
-    }
-}
-
 # set the chunk size of vhost.
 vhost chunksize.srs.com {
     # the default chunk size is 128, max is 65536,

@@ -43,26 +43,6 @@ stream_caster {
     rtp_port_min 57200;
     rtp_port_max 57300;
 }
-stream_caster {
-    enabled off;
-    caster mpegts_over_udp;
-    output rtmp://127.0.0.1/live/livestream;
-    listen 8935;
-}
-stream_caster {
-    enabled off;
-    caster rtsp;
-    output rtmp://127.0.0.1/[app]/[stream];
-    listen 554;
-    rtp_port_min 57200;
-    rtp_port_max 57300;
-}
-stream_caster {
-    enabled off;
-    caster flv;
-    output rtmp://127.0.0.1/[app]/[stream];
-    listen 8936;
-}
 vhost __defaultVhost__ {
 }
 vhost vhost.srs.com {
@@ -98,9 +78,12 @@ vhost vhost.srs.com {
     publish_1stpkt_timeout 20000;
     publish_normal_timeout 7000;
     
-    refer github.com github.io;
-    refer_publish github.com github.io;
-    refer_play github.com github.io;
+    refer {
+        enabled off;
+        all github.com github.io;
+        publish github.com github.io;
+        play github.com github.io;
+    }
     
     bandcheck {
         enabled off;

@@ -105,15 +105,10 @@ using namespace _srs_internal;
 // the interval in seconds for bandwidth check
 #define SRS_CONF_DEFAULT_BANDWIDTH_LIMIT_KBPS 1000
 
-#define SRS_CONF_DEFAULT_HTTP_MOUNT "[vhost]/"
 #define SRS_CONF_DEFAULT_HTTP_REMUX_MOUNT "[vhost]/[app]/[stream].flv"
 #define SRS_CONF_DEFAULT_HTTP_DIR SRS_CONF_DEFAULT_HLS_PATH
 #define SRS_CONF_DEFAULT_HTTP_AUDIO_FAST_CACHE 0
 
-#define SRS_CONF_DEFAULT_HTTP_STREAM_PORT "8080"
-#define SRS_CONF_DEFAULT_HTTP_API_PORT "1985"
-#define SRS_CONF_DEFAULT_HTTP_API_CROSSDOMAIN true
-
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_ENABLED false
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_INTERVAL 9.9
 #define SRS_CONF_DEFAULT_HTTP_HEAETBEAT_URL "http://"SRS_CONSTS_LOCALHOST":8085/api/v1/servers"
@@ -228,6 +223,37 @@ SrsConfDirective* SrsConfDirective::get(string _name, string _arg0)
     return NULL;
 }
 
+SrsConfDirective* SrsConfDirective::get_or_create(string n)
+{
+    SrsConfDirective* conf = get(n);
+    
+    if (!conf) {
+        conf = new SrsConfDirective();
+        conf->name = n;
+        directives.push_back(conf);
+    }
+    
+    return conf;
+}
+
+SrsConfDirective* SrsConfDirective::get_or_create(string n, string a0)
+{
+    SrsConfDirective* conf = get_or_create(n);
+    
+    if (conf->arg0() == a0) {
+        return conf;
+    }
+    
+    // update a0.
+    if (!conf->args.empty()) {
+        conf->args.erase(conf->args.begin());
+    }
+    
+    conf->args.insert(conf->args.begin(), a0);
+    
+    return conf;
+}
+
 bool SrsConfDirective::is_vhost()
 {
     return name == "vhost";
@@ -645,6 +671,12 @@ int SrsConfig::reload()
     }
     srs_info("config reloader parse file success.");
     
+    // transform config to compatible with previous style of config.
+    if ((ret = srs_config_transform_vhost(conf.root)) != ERROR_SUCCESS) {
+        srs_error("transform config failed. ret=%d", ret);
+        return ret;
+    }
+
     if ((ret = conf.check_config()) != ERROR_SUCCESS) {
         srs_error("ignore config reloader check config failed. ret=%d", ret);
         ret = ERROR_SUCCESS;
@@ -958,20 +990,7 @@ int SrsConfig::reload_vhost(SrsConfDirective* old_root)
                 srs_trace("vhost %s reload min_latency success.", vhost.c_str());
             }
             
-            // http, only one per vhost.
-            if (!srs_directive_equals(new_vhost->get("http"), old_vhost->get("http"))) {
-                for (it = subscribes.begin(); it != subscribes.end(); ++it) {
-                    ISrsReloadHandler* subscribe = *it;
-                    if ((ret = subscribe->on_reload_vhost_http_updated()) != ERROR_SUCCESS) {
-                        srs_error("vhost %s notify subscribes http failed. ret=%d", vhost.c_str(), ret);
-                        return ret;
-                    }
-                }
-                srs_trace("vhost %s reload http success.", vhost.c_str());
-            }
-            
             // http_static, only one per vhost.
-            // @remark, http_static introduced as alias of http.
             if (!srs_directive_equals(new_vhost->get("http_static"), old_vhost->get("http_static"))) {
                 for (it = subscribes.begin(); it != subscribes.end(); ++it) {
                     ISrsReloadHandler* subscribe = *it;
@@ -1239,17 +1258,8 @@ int SrsConfig::reload_http_stream(SrsConfDirective* old_root)
     //      ENABLED     =>      DISABLED
     //      ENABLED     =>      ENABLED (modified)
     
-    SrsConfDirective* new_http_stream = root->get("http_stream");
-    // http_stream rename to http_server in SRS2.
-    if (!new_http_stream) {
-        new_http_stream = root->get("http_server");
-    }
-
-    SrsConfDirective* old_http_stream = old_root->get("http_stream");
-    // http_stream rename to http_server in SRS2.
-    if (!old_http_stream) {
-        old_http_stream = root->get("http_server");
-    }
+    SrsConfDirective* new_http_stream = root->get("http_server");
+    SrsConfDirective* old_http_stream = old_root->get("http_server");
 
     // DISABLED    =>      ENABLED
     if (!get_http_stream_enabled(old_http_stream) && get_http_stream_enabled(new_http_stream)) {
@@ -1524,6 +1534,12 @@ int SrsConfig::parse_options(int argc, char** argv)
 
     ret = parse_file(config_file.c_str());
     
+    // transform config to compatible with previous style of config.
+    if ((ret = srs_config_transform_vhost(root)) != ERROR_SUCCESS) {
+        srs_error("transform config failed. ret=%d", ret);
+        return ret;
+    }
+    
     if (test_conf) {
         // the parse_file never check the config,
         // we check it when user requires check config file.
@@ -1735,7 +1751,7 @@ int SrsConfig::global_to_json(SrsAmf0Object* obj)
         sobj->set("forward", SrsAmf0Any::boolean(get_forward(dir->name)));
         
         sobj->set("security", SrsAmf0Any::boolean(get_security_enabled(dir->name)));
-        sobj->set("refer", SrsAmf0Any::boolean(get_refer(dir->name) || get_refer_play(dir->name) || get_refer_publish(dir->name)));
+        sobj->set("refer", SrsAmf0Any::boolean(get_refer_enabled(dir->name)));
         
         sobj->set("mr", SrsAmf0Any::boolean(get_mr_enabled(dir->name)));
         sobj->set("min_latency", SrsAmf0Any::boolean(get_realtime_enabled(dir->name)));
@@ -1905,13 +1921,22 @@ int SrsConfig::vhost_to_json(SrsConfDirective* vhost, SrsAmf0Object* obj)
     
     // refer
     if ((dir = vhost->get("refer")) != NULL) {
-        obj->set("refer", dir->dumps_args());
+        SrsAmf0Object* refer = SrsAmf0Any::object();
+        obj->set("refer", refer);
+        
+        for (int i = 0; i < (int)dir->directives.size(); i++) {
+            SrsConfDirective* sdir = dir->directives.at(i);
+            
+            if (sdir->name == "enabled") {
+                refer->set("enabled", sdir->dumps_arg0_to_boolean());
+            } else if (sdir->name == "all") {
+                refer->set("all", sdir->dumps_args());
+            } else if (sdir->name == "publish") {
+                refer->set("publish", sdir->dumps_args());
+            } else if (sdir->name == "play") {
+                refer->set("play", sdir->dumps_args());
             }
-    if ((dir = vhost->get("refer_publish")) != NULL) {
-        obj->set("refer_publish", dir->dumps_args());
         }
-    if ((dir = vhost->get("refer_play")) != NULL) {
-        obj->set("refer_play", dir->dumps_args());
     }
     
     // bandcheck
@@ -2495,7 +2520,7 @@ int SrsConfig::check_config()
             && n != "srs_log_tank" && n != "srs_log_level" && n != "srs_log_file"
             && n != "max_connections" && n != "daemon" && n != "heartbeat"
             && n != "http_api" && n != "stats" && n != "vhost" && n != "pithy_print_ms"
-            && n != "http_stream" && n != "http_server" && n != "stream_caster"
+            && n != "http_server" && n != "stream_caster"
             && n != "utc_time"
         ) {
             ret = ERROR_SYSTEM_CONFIG_INVALID;
@@ -2504,7 +2529,7 @@ int SrsConfig::check_config()
         }
     }
     if (true) {
-        SrsConfDirective* conf = get_http_api();
+        SrsConfDirective* conf = root->get("http_api");
         for (int i = 0; conf && i < (int)conf->directives.size(); i++) {
             SrsConfDirective* obj = conf->at(i);
             string n = obj->name;
@@ -2527,7 +2552,7 @@ int SrsConfig::check_config()
         }
     }
     if (true) {
-        SrsConfDirective* conf = get_http_stream();
+        SrsConfDirective* conf = root->get("http_server");
         for (int i = 0; conf && i < (int)conf->directives.size(); i++) {
             string n = conf->at(i)->name;
             if (n != "enabled" && n != "listen" && n != "dir") {
@@ -2751,8 +2776,7 @@ int SrsConfig::check_config()
                 && n != "mode" && n != "origin" && n != "token_traverse" && n != "vhost"
                 && n != "dvr" && n != "ingest" && n != "hls" && n != "http_hooks"
                 && n != "gop_cache" && n != "queue_length"
-                && n != "refer" && n != "refer_publish" && n != "refer_play"
-                && n != "forward" && n != "transcode" && n != "bandcheck"
+                && n != "refer" && n != "forward" && n != "transcode" && n != "bandcheck"
                 && n != "time_jitter" && n != "mix_correct"
                 && n != "atc" && n != "atc_auto"
                 && n != "debug_srs_upnode"
@@ -2760,8 +2784,7 @@ int SrsConfig::check_config()
                 && n != "tcp_nodelay" && n != "send_min_interval" && n != "reduce_sequence_header"
                 && n != "publish_1stpkt_timeout" && n != "publish_normal_timeout"
                 && n != "security" && n != "http_remux"
-                && n != "http" && n != "http_static"
-                && n != "hds" && n != "exec"
+                && n != "http_static" && n != "hds" && n != "exec"
             ) {
                 ret = ERROR_SYSTEM_CONFIG_INVALID;
                 srs_error("unsupported vhost directive %s, ret=%d", n.c_str(), ret);
@@ -2779,6 +2802,15 @@ int SrsConfig::check_config()
                         return ret;
                     }
                 }
+            } else if (n == "refer") {
+                for (int j = 0; j < (int)conf->directives.size(); j++) {
+                    string m = conf->at(j)->name.c_str();
+                    if (m != "enabled" && m != "all" && m != "publish" && m != "play") {
+                        ret = ERROR_SYSTEM_CONFIG_INVALID;
+                        srs_error("unsupported vhost refer directive %s, ret=%d", m.c_str(), ret);
+                        return ret;
+                    }
+                }
             } else if (n == "exec") {
                 for (int j = 0; j < (int)conf->directives.size(); j++) {
                     string m = conf->at(j)->name.c_str();
@@ -2806,7 +2838,7 @@ int SrsConfig::check_config()
                         return ret;
                     }
                 }
-            } else if (n == "http" || n == "http_static") {
+            } else if (n == "http_static") {
                 for (int j = 0; j < (int)conf->directives.size(); j++) {
                     string m = conf->at(j)->name.c_str();
                     if (m != "enabled" && m != "mount" && m != "dir") {
@@ -3372,37 +3404,77 @@ double SrsConfig::get_queue_length(string vhost)
     return ::atoi(conf->arg0().c_str());
 }
 
+bool SrsConfig::get_refer_enabled(string vhost)
+{
+    static bool DEFAULT = false;
+    
+    SrsConfDirective* conf = get_vhost(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
+    
+    conf = conf->get("refer");
+    if (!conf) {
+        return DEFAULT;
+    }
+    
+    conf = conf->get("enabled");
+    if (!conf || conf->arg0().empty()) {
+        return DEFAULT;
+    }
+    
+    return SRS_CONF_PERFER_FALSE(conf->arg0());
+}
+
 SrsConfDirective* SrsConfig::get_refer(string vhost)
 {
+    static SrsConfDirective* DEFAULT = NULL;
+    
     SrsConfDirective* conf = get_vhost(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
     
+    conf = conf->get("refer");
     if (!conf) {
-        return NULL;
+        return DEFAULT;
     }
     
-    return conf->get("refer");
+    return conf->get("all");
 }
 
 SrsConfDirective* SrsConfig::get_refer_play(string vhost)
 {
+    static SrsConfDirective* DEFAULT = NULL;
+    
     SrsConfDirective* conf = get_vhost(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
     
+    conf = conf->get("refer");
     if (!conf) {
-        return NULL;
+        return DEFAULT;
     }
     
-    return conf->get("refer_play");
+    return conf->get("play");
 }
 
 SrsConfDirective* SrsConfig::get_refer_publish(string vhost)
 {
+    static SrsConfDirective* DEFAULT = NULL;
+    
     SrsConfDirective* conf = get_vhost(vhost);
+    if (!conf) {
+        return DEFAULT;
+    }
     
+    conf = conf->get("refer");
     if (!conf) {
-        return NULL;
+        return DEFAULT;
     }
     
-    return conf->get("refer_publish");
+    return conf->get("publish");
 }
 
 int SrsConfig::get_chunk_size(string vhost)
@@ -5046,24 +5118,21 @@ int SrsConfig::get_dvr_time_jitter(string vhost)
 
 bool SrsConfig::get_http_api_enabled()
 {
-    SrsConfDirective* conf = get_http_api();
+    SrsConfDirective* conf = root->get("http_api");
     return get_http_api_enabled(conf);
 }
 
-SrsConfDirective* SrsConfig::get_http_api()
-{
-    return root->get("http_api");
-}
-
 bool SrsConfig::get_http_api_enabled(SrsConfDirective* conf)
 {
+    static bool DEFAULT = false;
+    
     if (!conf) {
-        return false;
+        return DEFAULT;
     }
     
     conf = conf->get("enabled");
     if (!conf || conf->arg0().empty()) {
-        return false;
+        return DEFAULT;
     }
     
     return SRS_CONF_PERFER_FALSE(conf->arg0());
@@ -5071,15 +5140,17 @@ bool SrsConfig::get_http_api_enabled(SrsConfDirective* conf)
 
 string SrsConfig::get_http_api_listen()
 {
-    SrsConfDirective* conf = get_http_api();
+    static string DEFAULT = "1985";
+    
+    SrsConfDirective* conf = root->get("http_api");
     
     if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_API_PORT;
+        return DEFAULT;
     }
     
     conf = conf->get("listen");
     if (!conf || conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_API_PORT;
+        return DEFAULT;
     }
 
     return conf->arg0();
@@ -5087,15 +5158,17 @@ string SrsConfig::get_http_api_listen()
 
 bool SrsConfig::get_http_api_crossdomain()
 {
-    SrsConfDirective* conf = get_http_api();
+    static bool DEFAULT = true;
+    
+    SrsConfDirective* conf = root->get("http_api");
     
     if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_API_CROSSDOMAIN;
+        return DEFAULT;
     }
     
     conf = conf->get("crossdomain");
     if (!conf || conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_API_CROSSDOMAIN;
+        return DEFAULT;
     }
     
     return SRS_CONF_PERFER_TRUE(conf->arg0());
@@ -5105,7 +5178,7 @@ bool SrsConfig::get_raw_api()
 {
     static bool DEFAULT = false;
     
-    SrsConfDirective* conf = get_http_api();
+    SrsConfDirective* conf = root->get("http_api");
     if (!conf) {
         return DEFAULT;
     }
@@ -5127,7 +5200,7 @@ bool SrsConfig::get_raw_api_allow_reload()
 {
     static bool DEFAULT = false;
     
-    SrsConfDirective* conf = get_http_api();
+    SrsConfDirective* conf = root->get("http_api");
     if (!conf) {
         return DEFAULT;
     }
@@ -5149,7 +5222,7 @@ bool SrsConfig::get_raw_api_allow_query()
 {
     static bool DEFAULT = false;
     
-    SrsConfDirective* conf = get_http_api();
+    SrsConfDirective* conf = root->get("http_api");
     if (!conf) {
         return DEFAULT;
     }
@@ -5169,30 +5242,21 @@ bool SrsConfig::get_raw_api_allow_query()
 
 bool SrsConfig::get_http_stream_enabled()
 {
-    SrsConfDirective* conf = get_http_stream();
+    SrsConfDirective* conf = root->get("http_server");
     return get_http_stream_enabled(conf);
 }
 
-SrsConfDirective* SrsConfig::get_http_stream()
-{
-    SrsConfDirective* conf = root->get("http_stream");
-    // http_stream renamed to http_server in SRS2.
-    if (!conf) {
-        conf = root->get("http_server");
-    }
-
-    return conf;
-}
-
 bool SrsConfig::get_http_stream_enabled(SrsConfDirective* conf)
 {
+    static bool DEFAULT = false;
+    
     if (!conf) {
-        return false;
+        return DEFAULT;
     }
     
     conf = conf->get("enabled");
     if (!conf || conf->arg0().empty()) {
-        return false;
+        return DEFAULT;
     }
     
     return SRS_CONF_PERFER_FALSE(conf->arg0());
@@ -5200,15 +5264,17 @@ bool SrsConfig::get_http_stream_enabled(SrsConfDirective* conf)
 
 string SrsConfig::get_http_stream_listen()
 {
-    SrsConfDirective* conf = get_http_stream();
+    static string DEFAULT = "8080";
+    
+    SrsConfDirective* conf = root->get("http_server");
     
     if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_STREAM_PORT;
+        return DEFAULT;
     }
     
     conf = conf->get("listen");
     if (!conf || conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_STREAM_PORT;
+        return DEFAULT;
     }
     
     return conf->arg0();
@@ -5216,18 +5282,16 @@ string SrsConfig::get_http_stream_listen()
 
 string SrsConfig::get_http_stream_dir()
 {
-    SrsConfDirective* conf = get_http_stream();
-    if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_DIR;
-    }
+    static string DEFAULT = "./objs/nginx/html";
     
-    conf = conf->get("dir");
+    SrsConfDirective* conf = root->get("http_server");
     if (!conf) {
-        return SRS_CONF_DEFAULT_HTTP_DIR;
+        return DEFAULT;
     }
     
-    if (conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_DIR;
+    conf = conf->get("dir");
+    if (!conf || conf->arg0().empty()) {
+        return DEFAULT;
     }
     
     return conf->arg0();
@@ -5235,23 +5299,21 @@ string SrsConfig::get_http_stream_dir()
 
 bool SrsConfig::get_vhost_http_enabled(string vhost)
 {
-    SrsConfDirective* vconf = get_vhost(vhost);
-    if (!vconf) {
-        return false;
-    }
+    static bool DEFAULT = false;
     
-    SrsConfDirective* conf = vconf->get("http");
+    SrsConfDirective* conf = get_vhost(vhost);
     if (!conf) {
-        conf = vconf->get("http_static");
+        return DEFAULT;
     }
     
+    conf = conf->get("http_static");
     if (!conf) {
-        return false;
+        return DEFAULT;
     }
     
     conf = conf->get("enabled");
     if (!conf || conf->arg0().empty()) {
-        return false;
+        return DEFAULT;
     }
     
     return SRS_CONF_PERFER_FALSE(conf->arg0());
@@ -5259,22 +5321,21 @@ bool SrsConfig::get_vhost_http_enabled(string vhost)
 
 string SrsConfig::get_vhost_http_mount(string vhost)
 {
-    SrsConfDirective* vconf = get_vhost(vhost);
-    if (!vconf) {
-        return SRS_CONF_DEFAULT_HTTP_MOUNT;
-    }
+    static string DEFAULT = "[vhost]/";
     
-    SrsConfDirective* conf = vconf->get("http");
-    if (!conf) {
-        conf = vconf->get("http_static");
+    SrsConfDirective* conf = get_vhost(vhost);
     if (!conf) {
-            return SRS_CONF_DEFAULT_HTTP_MOUNT;
+        return DEFAULT;
     }
+    
+    conf = conf->get("http_static");
+    if (!conf) {
+        return DEFAULT;
     }
     
     conf = conf->get("mount");
     if (!conf || conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_MOUNT;
+        return DEFAULT;
     }
     
     return conf->arg0();
@@ -5282,22 +5343,21 @@ string SrsConfig::get_vhost_http_mount(string vhost)
 
 string SrsConfig::get_vhost_http_dir(string vhost)
 {
-    SrsConfDirective* vconf = get_vhost(vhost);
-    if (!vconf) {
-        return SRS_CONF_DEFAULT_HTTP_DIR;
-    }
+    static string DEFAULT = "./objs/nginx/html";
     
-    SrsConfDirective* conf = vconf->get("http");
-    if (!conf) {
-        conf = vconf->get("http_static");
+    SrsConfDirective* conf = get_vhost(vhost);
     if (!conf) {
-            return SRS_CONF_DEFAULT_HTTP_DIR;
+        return DEFAULT;
     }
+    
+    conf = conf->get("http_static");
+    if (!conf) {
+        return DEFAULT;
     }
     
     conf = conf->get("dir");
     if (!conf || conf->arg0().empty()) {
-        return SRS_CONF_DEFAULT_HTTP_DIR;
+        return DEFAULT;
     }
     
     return conf->arg0();
@@ -5650,3 +5710,73 @@ bool srs_stream_caster_is_flv(string caster)
 {
     return caster == SRS_CONF_DEFAULT_STREAM_CASTER_FLV;
 }
+
+int srs_config_transform_vhost(SrsConfDirective* root)
+{
+    int ret = ERROR_SUCCESS;
+    
+    for (int i = 0; i < root->directives.size(); i++) {
+        SrsConfDirective* dir = root->directives.at(i);
+        
+        // SRS2.0, rename global http_stream to http_server.
+        //  SRS1:
+        //      http_stream {}
+        //  SRS2+:
+        //      http_server {}
+        if (dir->name == "http_stream") {
+            dir->name = "http_server";
+            continue;
+        }
+        
+        if (!dir->is_vhost()) {
+            continue;
+        }
+        
+        std::vector<SrsConfDirective*>::iterator it;
+        for (it = dir->directives.begin(); it != dir->directives.end();) {
+            SrsConfDirective* conf = *it;
+            
+            // SRS2.0, rename vhost http to http_static
+            //  SRS1:
+            //      vhost { http {} }
+            //  SRS2+:
+            //      vhost { http_static {} }
+            if (conf->name == "http") {
+                conf->name = "http_static";
+                ++it;
+                continue;
+            }
+            
+            // SRS3.0, change the refer style
+            //  SRS1/2:
+            //      vhost { refer; refer_play; refer_publish; }
+            //  SRS3+:
+            //      vhost { refer { enabled; all; play; publish; } }
+            if ((conf->name == "refer" && conf->directives.empty()) || conf->name == "refer_play" || conf->name == "refer_publish") {
+                // remove the old one first, for name duplicated.
+                it = dir->directives.erase(it);
+                
+                SrsConfDirective* refer = dir->get_or_create("refer");
+                refer->get_or_create("enabled", "on");
+                if (conf->name == "refer") {
+                    SrsConfDirective* all = refer->get_or_create("all");
+                    all->args = conf->args;
+                } else if (conf->name == "play") {
+                    SrsConfDirective* play = refer->get_or_create("play");
+                    play->args = conf->args;
+                } else if (conf->name == "publish") {
+                    SrsConfDirective* publish = refer->get_or_create("publish");
+                    publish->args = conf->args;
+                }
+                
+                // remove the old directive.
+                srs_freep(conf);
+                continue;
+            }
+            
+            ++it;
+        }
+    }
+    
+    return ret;
+}

@@ -126,6 +126,10 @@ public:
     * get the directive by name and its arg0, return the first match.
     */
     virtual SrsConfDirective* get(std::string _name, std::string _arg0);
+// raw
+public:
+    virtual SrsConfDirective* get_or_create(std::string n);
+    virtual SrsConfDirective* get_or_create(std::string n, std::string a0);
 // help utilities
 public:
     /**
@@ -293,6 +297,7 @@ private:
     /**
     * reload the http_stream section of config.
     */
+    // TODO: FIXME: rename to http_server.
     virtual int reload_http_stream(SrsConfDirective* old_root);
     /**
     * reload the transcode section of vhost of config.
@@ -518,21 +523,23 @@ public:
     */
     virtual double              get_queue_length(std::string vhost);
     /**
-    * get the refer antisuck directive.
-    * each args of directive is a refer config.
-    * when the client refer(pageUrl) not match the refer config,
-    * SRS will reject the connection.
-    * @remark, default NULL.
+     * whether the refer hotlink-denial enabled.
+     */
+    virtual bool                get_refer_enabled(std::string vhost);
+    /**
+     * get the refer hotlink-denial for all type.
+     * @return the refer, NULL for not configed.
      */
+    // TODO: FIXME: rename to get_refer_all
     virtual SrsConfDirective*   get_refer(std::string vhost);
     /**
-    * get the play refer, refer for play clients.
-    * @remark, default NULL.
+     * get the refer hotlink-denial for play.
+     * @return the refer, NULL for not configed.
      */
     virtual SrsConfDirective*   get_refer_play(std::string vhost);
     /**
-    * get the publish refer, refer for publish clients.
-    * @remark, default NULL.
+     * get the refer hotlink-denial for publish.
+     * @return the refer, NULL for not configed.
      */
     virtual SrsConfDirective*   get_refer_publish(std::string vhost);
     /**
@@ -1048,10 +1055,6 @@ public:
 // http api section
 private:
     /**
-    * get the http api directive.
-    */
-    virtual SrsConfDirective*   get_http_api();
-    /**
     * whether http api enabled
     */
     virtual bool                get_http_api_enabled(SrsConfDirective* conf);
@@ -1083,10 +1086,6 @@ public:
 // http stream section
 private:
     /**
-    * get the http stream directive.
-    */
-    virtual SrsConfDirective*   get_http_stream();
-    /**
     * whether http stream enabled.
     */
     virtual bool                get_http_stream_enabled(SrsConfDirective* conf);
@@ -1094,6 +1093,7 @@ public:
     /**
     * whether http stream enabled.
     */
+    // TODO: FIXME: rename to http_static.
     virtual bool                get_http_stream_enabled();
     /**
     * get the http stream listen port.
@@ -1238,6 +1238,20 @@ extern bool srs_stream_caster_is_udp(std::string caster);
 extern bool srs_stream_caster_is_rtsp(std::string caster);
 extern bool srs_stream_caster_is_flv(std::string caster);
 
+/**
+ * parse loaded vhost directives to compatible mode.
+ * for exmaple, SRS1/2 use the follow refer style:
+ *          refer   a.domain.com b.domain.com;
+ * while SRS3 use the following:
+ *          refer {
+ *              enabled on;
+ *              all a.domain.com b.domain.com;
+ *          }
+ * so we must transform the vhost directive anytime load the config.
+ * @param root the root directive to transform, in and out parameter.
+ */
+extern int srs_config_transform_vhost(SrsConfDirective* root);
+
 // global config
 extern SrsConfig* _srs_config;
 

@@ -579,11 +579,13 @@ int SrsRtmpConn::check_vhost()
         req->vhost = vhost->arg0();
     }
     
+    if (_srs_config->get_refer_enabled(req->vhost)) {
         if ((ret = refer->check(req->pageUrl, _srs_config->get_refer(req->vhost))) != ERROR_SUCCESS) {
             srs_error("check refer failed. ret=%d", ret);
             return ret;
         }
         srs_verbose("check refer success.");
+    }
     
     if ((ret = http_hooks_on_connect()) != ERROR_SUCCESS) {
         return ret;
@@ -637,11 +639,13 @@ int SrsRtmpConn::do_playing(SrsSource* source, SrsConsumer* consumer, SrsQueueRe
     
     srs_assert(consumer != NULL);
     
+    if (_srs_config->get_refer_enabled(req->vhost)) {
         if ((ret = refer->check(req->pageUrl, _srs_config->get_refer_play(req->vhost))) != ERROR_SUCCESS) {
             srs_error("check play_refer failed. ret=%d", ret);
             return ret;
         }
         srs_verbose("check play_refer success.");
+    }
     
     // initialize other components
     SrsPithyPrint* pprint = SrsPithyPrint::create_rtmp_play();
@@ -811,11 +815,13 @@ int SrsRtmpConn::publishing(SrsSource* source)
 {
     int ret = ERROR_SUCCESS;
     
+    if (_srs_config->get_refer_enabled(req->vhost)) {
         if ((ret = refer->check(req->pageUrl, _srs_config->get_refer_publish(req->vhost))) != ERROR_SUCCESS) {
             srs_error("check publish_refer failed. ret=%d", ret);
             return ret;
         }
         srs_verbose("check publish_refer success.");
+    }
 
     if ((ret = http_hooks_on_publish()) != ERROR_SUCCESS) {
         srs_error("http hook on_publish failed. ret=%d", ret);