for #277, support http vhost mount.

@@ -351,9 +351,12 @@ vhost http.srs.com {
         # default: off
         enabled     on;
         # the virtual directory root for this vhost to mount at
-        # for example, if mount to /hls, user access by http://server/hls
-        # default: /
-        mount       /hls;
+        # for example, if mount to [vhost]/hls, user access by http://[vhost]/hls
+        # the variables:
+        #       [vhost] current vhost for http server.
+        # @remark the http of __defaultVhost__ will override the http_stream section.
+        # default: [vhost]/
+        mount       [vhost]/hls;
         # main dir of vhost,
         # to delivery HTTP stream of this vhost.
         # default: ./objs/nginx/html

@@ -8,10 +8,10 @@ http_stream {
     listen          8080;
     dir             ./objs/nginx/html;
 }
-vhost __defaultVhost__ {
+vhost ossrs.net {
     http {
         enabled     on;
-        mount       /default;
+        mount       [vhost]/;
         dir         ./objs/nginx/html;
     }
 }

@@ -287,8 +287,9 @@ int SrsGoHttpFileServer::serve_http(ISrsGoHttpResponseWriter* w, SrsHttpMessage*
     string fullpath = dir + "/";
     
     srs_assert(entry);
-    if (upath.length() > entry->pattern.length()) {
-        fullpath += upath.substr(entry->pattern.length());
+    size_t pos = entry->pattern.find("/");
+    if (upath.length() > entry->pattern.length() && pos != string::npos) {
+        fullpath += upath.substr(entry->pattern.length() - pos);
     } else {
         fullpath += upath;
     }
@@ -402,6 +403,7 @@ SrsGoHttpMuxEntry::~SrsGoHttpMuxEntry()
 
 SrsGoHttpServeMux::SrsGoHttpServeMux()
 {
+    hosts = false;
 }
 
 SrsGoHttpServeMux::~SrsGoHttpServeMux()
@@ -442,6 +444,10 @@ int SrsGoHttpServeMux::handle(std::string pattern, ISrsGoHttpHandler* handler)
         }
     }
     
+    if (pattern.at(0) != '/') {
+        hosts = true;
+    }
+    
     if (true) {
         SrsGoHttpMuxEntry* entry = new SrsGoHttpMuxEntry();
         entry->explicit_match = true;
@@ -538,6 +544,11 @@ int SrsGoHttpServeMux::match(SrsHttpMessage* r, ISrsGoHttpHandler** ph)
     
     std::string path = r->path();
     
+    // Host-specific pattern takes precedence over generic ones
+    if (hosts) {
+        path = r->host() + path;
+    }
+    
     int nb_matched = 0;
     ISrsGoHttpHandler* h = NULL;
     
@@ -700,7 +711,8 @@ int SrsHttpMessage::initialize()
     int ret = ERROR_SUCCESS;
     
     // parse uri to schema/server:port/path?query
-    if ((ret = _uri->initialize(_url)) != ERROR_SUCCESS) {
+    std::string uri = "http://" + get_request_header("Host") + _url;
+    if ((ret = _uri->initialize(uri)) != ERROR_SUCCESS) {
         return ret;
     }
     
@@ -822,7 +834,7 @@ string SrsHttpMessage::url()
 
 string SrsHttpMessage::host()
 {
-    return get_request_header("Host");
+    return _uri->get_host();
 }
 
 string SrsHttpMessage::path()

@@ -266,6 +266,8 @@ class SrsGoHttpServeMux
 {
 private:
     std::map<std::string, SrsGoHttpMuxEntry*> entries;
+    // whether any patterns contain hostnames
+    bool hosts;
 public:
     SrsGoHttpServeMux();
     virtual ~SrsGoHttpServeMux();

@@ -166,11 +166,15 @@ int SrsHttpServer::initialize()
         std::string mount = _srs_config->get_vhost_http_mount(vhost);
         std::string dir = _srs_config->get_vhost_http_dir(vhost);
 
+        // replace the vhost variable
+        mount = srs_string_replace(mount, "[vhost]", vhost);
+        
         // the dir mount must always ends with "/"
         if (mount != "/" && mount.rfind("/") != mount.length() - 1) {
             mount += "/";
         }
         
+        // mount the http of vhost.
         if ((ret = mux.handle(mount, new SrsVodStream(dir))) != ERROR_SUCCESS) {
             srs_error("http: mount dir=%s for vhost=%s failed. ret=%d", dir.c_str(), vhost.c_str(), ret);
             return ret;