implements basic http response framework

@@ -59,7 +59,7 @@ int SrsHttpHandler::initialize()
     return ret;
 }
 
-bool SrsHttpHandler::can_handle(const char* /*path*/, int /*length*/)
+bool SrsHttpHandler::can_handle(const char* /*path*/, int /*length*/, const char** /*pnext_path*/)
 {
     return false;
 }
@@ -86,20 +86,23 @@ int SrsHttpHandler::best_match(const char* path, int length, SrsHttpHandler** ph
         }
         
         // whether the handler can handler the node.
-        int node_size = p - path;
-        if (!can_handle(path, node_size)) {
+        const char* pnext = p;
+        if (!can_handle(path, p - path, &pnext)) {
             break;
         }
         
+        // save current handler, it's ok for current handler atleast.
         *phandler = this;
         *pstart = path;
-        *plength = node_size;
+        *plength = p - path;
         
+        // find the best matched child handler.
         std::vector<SrsHttpHandler*>::iterator it;
         for (it = handlers.begin(); it != handlers.end(); ++it) {
             SrsHttpHandler* handler = *it;
-            // matched, donot search.
-            if (handler->best_match(p, length - node_size, phandler, pstart, plength) == ERROR_SUCCESS) {
+            
+            // matched, donot search more.
+            if (handler->best_match(pnext, length - (pnext - path), phandler, pstart, plength) == ERROR_SUCCESS) {
                 break;
             }
         }
@@ -116,6 +119,76 @@ int SrsHttpHandler::best_match(const char* path, int length, SrsHttpHandler** ph
     return ret;
 }
 
+SrsHttpHandler* SrsHttpHandler::res_status_line(std::stringstream& ss)
+{
+    ss << "HTTP/1.1 200 OK " << __CRLF
+       << "Server: SRS/"RTMP_SIG_SRS_VERSION"" << __CRLF;
+    return this;
+}
+
+SrsHttpHandler* SrsHttpHandler::res_content_type(std::stringstream& ss)
+{
+    ss << "Content-Type: text/html;charset=utf-8" << __CRLF
+        << "Allow: DELETE, GET, HEAD, OPTIONS, POST, PUT" << __CRLF;
+    return this;
+}
+
+SrsHttpHandler* SrsHttpHandler::res_content_length(std::stringstream& ss, int64_t length)
+{
+    ss << "Content-Length: "<< length << __CRLF;
+    return this;
+}
+
+SrsHttpHandler* SrsHttpHandler::res_enable_crossdomain(std::stringstream& ss)
+{
+    ss << "Access-Control-Allow-Origin: *" << __CRLF
+        << "Access-Control-Allow-Methods: "
+        << "GET, POST, HEAD, PUT, DELETE" << __CRLF
+        << "Access-Control-Allow-Headers: "
+        << "Cache-Control,X-Proxy-Authorization,X-Requested-With,Content-Type" << __CRLF;
+    return this;
+}
+
+SrsHttpHandler* SrsHttpHandler::res_header_eof(std::stringstream& ss)
+{
+    ss << __CRLF;
+    return this;
+}
+
+SrsHttpHandler* SrsHttpHandler::res_body(std::stringstream& ss, std::string body)
+{
+    ss << body;
+    return this;
+}
+
+int SrsHttpHandler::res_flush(SrsSocket* skt, std::stringstream& ss)
+{
+    return skt->write(ss.str().c_str(), ss.str().length(), NULL);
+}
+
+int SrsHttpHandler::res_options(SrsSocket* skt)
+{
+    std::stringstream ss;
+    
+    res_status_line(ss)->res_content_type(ss)
+        ->res_content_length(ss, 0)->res_enable_crossdomain(ss)
+        ->res_header_eof(ss);
+    
+    return res_flush(skt, ss);
+}
+
+int SrsHttpHandler::res_text(SrsSocket* skt, std::string body)
+{
+    std::stringstream ss;
+    
+    res_status_line(ss)->res_content_type(ss)
+        ->res_content_length(ss, (int)body.length())->res_enable_crossdomain(ss)
+        ->res_header_eof(ss)
+        ->res_body(ss, body);
+    
+    return res_flush(skt, ss);
+}
+
 SrsHttpHandler* SrsHttpHandler::create_http_api()
 {
     return new SrsApiRoot();

@@ -33,6 +33,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <string>
 #include <vector>
+#include <sstream>
 
 #include <http_parser.h>
 
@@ -89,8 +90,9 @@ public:
     virtual int initialize();
     /**
     * whether current handler can handle the specified path.
+    * @pnext_path set the next path, if needed.
     */
-    virtual bool can_handle(const char* path, int length);
+    virtual bool can_handle(const char* path, int length, const char** pnext_path);
     /**
     * use the handler to process the request.
     */
@@ -101,6 +103,17 @@ public:
     */
     virtual int best_match(const char* path, int length, SrsHttpHandler** phandler, const char** pstart, int* plength);
 public:
+    virtual SrsHttpHandler* res_status_line(std::stringstream& ss);
+    virtual SrsHttpHandler* res_content_type(std::stringstream& ss);
+    virtual SrsHttpHandler* res_content_length(std::stringstream& ss, int64_t length);
+    virtual SrsHttpHandler* res_enable_crossdomain(std::stringstream& ss);
+    virtual SrsHttpHandler* res_header_eof(std::stringstream& ss);
+    virtual SrsHttpHandler* res_body(std::stringstream& ss, std::string body);
+    virtual int res_flush(SrsSocket* skt, std::stringstream& ss);
+public:
+    virtual int res_options(SrsSocket* skt);
+    virtual int res_text(SrsSocket* skt, std::string body);
+public:
     /**
     * create http api resource handler.
     */

@@ -36,21 +36,56 @@ using namespace std;
 
 SrsApiRoot::SrsApiRoot()
 {
+    handlers.push_back(new SrsApiApi());
 }
 
 SrsApiRoot::~SrsApiRoot()
 {
 }
 
-bool SrsApiRoot::can_handle(const char* /*path*/, int /*length*/)
+bool SrsApiRoot::can_handle(const char* path, int length, const char** pnext_path)
 {
+    // reset the next path for child to parse.
+    *pnext_path = path;
+    
     return true;
 }
 
-int SrsApiRoot::process_request(SrsSocket* /*skt*/, SrsHttpMessage* /*req*/, const char* /*path*/, int /*length*/)
+int SrsApiRoot::process_request(SrsSocket* skt, SrsHttpMessage* req, const char* /*path*/, int /*length*/)
 {
-    int ret = ERROR_SUCCESS;
-    return ret;
+    if (req->method() == HTTP_OPTIONS) {
+        return res_options(skt);
+    } else {
+        std::string body = "hello, root";
+        return res_text(skt, body);
+    }
+
+    return ERROR_SUCCESS;
+}
+
+SrsApiApi::SrsApiApi()
+{
+}
+
+SrsApiApi::~SrsApiApi()
+{
+}
+
+bool SrsApiApi::can_handle(const char* path, int length, const char** /*pnext_path*/)
+{
+    return !memcmp("/api", path, length);
+}
+
+int SrsApiApi::process_request(SrsSocket* skt, SrsHttpMessage* req, const char* /*path*/, int /*length*/)
+{
+    if (req->method() == HTTP_OPTIONS) {
+        return res_options(skt);
+    } else {
+        std::string body = "hello, api";
+        return res_text(skt, body);
+    }
+
+    return ERROR_SUCCESS;
 }
 
 SrsHttpApi::SrsHttpApi(SrsServer* srs_server, st_netfd_t client_stfd, SrsHttpHandler* _handler) 
@@ -135,35 +170,6 @@ int SrsHttpApi::process_request(SrsSocket* skt, SrsHttpMessage* req)
         return ret;
     }
     
-    if (req->method() == HTTP_OPTIONS) {
-        char data[] = "HTTP/1.1 200 OK" __CRLF
-            "Content-Length: 0"__CRLF
-            "Server: SRS/"RTMP_SIG_SRS_VERSION""__CRLF
-            "Allow: DELETE, GET, HEAD, OPTIONS, POST, PUT"__CRLF
-            "Access-Control-Allow-Origin: *"__CRLF
-            "Access-Control-Allow-Methods: GET, POST, HEAD, PUT, DELETE"__CRLF
-            "Access-Control-Allow-Headers: Cache-Control,X-Proxy-Authorization,X-Requested-With,Content-Type"__CRLF
-            "Content-Type: text/html;charset=utf-8"__CRLFCRLF
-            "";
-        return skt->write(data, sizeof(data), NULL);
-    } else {
-        std::string tilte = "SRS/"RTMP_SIG_SRS_VERSION;
-        tilte += " hello http/1.1 api~\n";
-        
-        std::stringstream ss;
-        ss << "HTTP/1.1 200 OK " << __CRLF
-            << "Content-Length: "<< tilte.length() + req->body_size() << __CRLF
-            << "Server: SRS/"RTMP_SIG_SRS_VERSION"" << __CRLF
-            << "Allow: DELETE, GET, HEAD, OPTIONS, POST, PUT" << __CRLF
-            << "Access-Control-Allow-Origin: *" << __CRLF
-            << "Access-Control-Allow-Methods: GET, POST, HEAD, PUT, DELETE" << __CRLF
-            << "Access-Control-Allow-Headers: Cache-Control,X-Proxy-Authorization,X-Requested-With,Content-Type" << __CRLF
-            << "Content-Type: text/html;charset=utf-8" << __CRLFCRLF
-            << tilte << req->body().c_str()
-            << "";
-        return skt->write(ss.str().c_str(), ss.str().length(), NULL);
-    }
-    
     return ret;
 }
 

@@ -48,7 +48,17 @@ public:
     SrsApiRoot();
     virtual ~SrsApiRoot();
 public:
-    virtual bool can_handle(const char* path, int length);
+    virtual bool can_handle(const char* path, int length, const char** pnext_path);
+    virtual int process_request(SrsSocket* skt, SrsHttpMessage* req, const char* path, int length);
+};
+
+class SrsApiApi : public SrsHttpHandler
+{
+public:
+    SrsApiApi();
+    virtual ~SrsApiApi();
+public:
+    virtual bool can_handle(const char* path, int length, const char** pnext_path);
     virtual int process_request(SrsSocket* skt, SrsHttpMessage* req, const char* path, int length);
 };