diff --git a/trunk/src/protocol/srs_protocol_http_conn.cpp b/trunk/src/protocol/srs_protocol_http_conn.cpp
index 33af49806..7483831f6 100644
--- a/trunk/src/protocol/srs_protocol_http_conn.cpp
+++ b/trunk/src/protocol/srs_protocol_http_conn.cpp
@@ -1011,8 +1011,6 @@ void SrsHttpResponseWriter::write_default_header()
 SrsHttpRequestWriter::SrsHttpRequestWriter(ISrsProtocolReadWriter* io)
 {
     writer_ = new SrsHttpMessageWriter(io, this);
-    method_ = NULL;
-    path_ = NULL;
 }
 
 SrsHttpRequestWriter::~SrsHttpRequestWriter()
@@ -1040,10 +1038,10 @@ srs_error_t SrsHttpRequestWriter::writev(const iovec* iov, int iovcnt, ssize_t*
     return writer_->writev(iov, iovcnt, pnwrite);
 }
 
-void SrsHttpRequestWriter::write_header(const char* method, const char* path)
+void SrsHttpRequestWriter::write_header(const std::string& method, const std::string& path)
 {
     if (writer_->header_wrote()) {
-        srs_warn("http: multiple write_header calls, current=%s(%s), now=%s(%s)", method_, path_, method, path);
+        srs_warn("http: multiple write_header calls, current=%s(%s), now=%s(%s)", method_.c_str(), path_.c_str(), method.c_str(), path.c_str());
         return;
     }
 
diff --git a/trunk/src/protocol/srs_protocol_http_conn.hpp b/trunk/src/protocol/srs_protocol_http_conn.hpp
index 4897f113a..605b5d134 100644
--- a/trunk/src/protocol/srs_protocol_http_conn.hpp
+++ b/trunk/src/protocol/srs_protocol_http_conn.hpp
@@ -290,8 +290,8 @@ class SrsHttpRequestWriter : public ISrsHttpRequestWriter, public ISrsHttpFirstL
 protected:
     SrsHttpMessageWriter* writer_;
     // The method and path passed to WriteHeader, for request only.
-    const char* method_;
-    const char* path_;
+    std::string method_;
+    std::string path_;
 public:
     SrsHttpRequestWriter(ISrsProtocolReadWriter* io);
     virtual ~SrsHttpRequestWriter();
@@ -301,7 +301,7 @@ public:
     virtual SrsHttpHeader* header();
     virtual srs_error_t write(char* data, int size);
     virtual srs_error_t writev(const iovec* iov, int iovcnt, ssize_t* pnwrite);
-    virtual void write_header(const char* method, const char* path);
+    virtual void write_header(const std::string& method, const std::string& path);
 // Interface ISrsHttpFirstLineWriter
 public:
     virtual srs_error_t build_first_line(std::stringstream& ss, char* data, int size);
diff --git a/trunk/src/protocol/srs_protocol_http_stack.hpp b/trunk/src/protocol/srs_protocol_http_stack.hpp
index 7ec56440e..636017954 100644
--- a/trunk/src/protocol/srs_protocol_http_stack.hpp
+++ b/trunk/src/protocol/srs_protocol_http_stack.hpp
@@ -270,7 +270,7 @@ public:
     // Thus explicit calls to WriteHeader are mainly used to
     // send error codes.
     // @remark, user must set header then write or write_header.
-    virtual void write_header(const char* method, const char* path) = 0;
+    virtual void write_header(const std::string& method, const std::string& path) = 0;
 };
 
 // Objects implementing the Handler interface can be
diff --git a/trunk/src/utest/srs_utest_service.cpp b/trunk/src/utest/srs_utest_service.cpp
index 5ce59a182..b93cc2f9d 100644
--- a/trunk/src/utest/srs_utest_service.cpp
+++ b/trunk/src/utest/srs_utest_service.cpp
@@ -91,11 +91,12 @@ VOID TEST(TCPServerTest, PingPong)
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 
 		HELPER_EXPECT_SUCCESS(l.listen());
+		EXPECT_TRUE(srs_netfd_fileno(l.lfd) > 0);
 	}
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -108,7 +109,7 @@ VOID TEST(TCPServerTest, PingPong)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -130,7 +131,7 @@ VOID TEST(TCPServerTest, PingPong)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -154,7 +155,7 @@ VOID TEST(TCPServerTest, PingPong)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -189,7 +190,7 @@ VOID TEST(TCPServerTest, PingPongWithTimeout)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -211,7 +212,7 @@ VOID TEST(TCPServerTest, PingPongWithTimeout)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -233,7 +234,7 @@ VOID TEST(TCPServerTest, PingPongWithTimeout)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -413,7 +414,7 @@ VOID TEST(TCPServerTest, WritevIOVC)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -443,7 +444,7 @@ VOID TEST(TCPServerTest, WritevIOVC)
 
 	if (true) {
 		MockTcpHandler h;
-		SrsTcpListener l(&h);
+        SrsTcpListener l(&h);
         l.set_endpoint(_srs_tmp_host, _srs_tmp_port);
 		HELPER_EXPECT_SUCCESS(l.listen());
 
@@ -515,12 +516,12 @@ VOID TEST(HTTPServerTest, MessageConnection)
 
 	if (true) {
 	    SrsHttpMessage m;
-	    m.set_basic(HTTP_REQUEST, 100, 0, 0); EXPECT_STREQ("<unknown>", m.method_str().c_str());
-	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_GET, 0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_GET, m.method()); EXPECT_STREQ("GET", m.method_str().c_str());
-	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_PUT, 0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_PUT, m.method()); EXPECT_STREQ("PUT", m.method_str().c_str());
-	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_POST, 0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_POST, m.method()); EXPECT_STREQ("POST", m.method_str().c_str());
-	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_DELETE, 0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_DELETE, m.method()); EXPECT_STREQ("DELETE", m.method_str().c_str());
-	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_OPTIONS, 0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_OPTIONS, m.method()); EXPECT_STREQ("OPTIONS", m.method_str().c_str());
+	    m.set_basic(HTTP_REQUEST, (http_method)100, (http_status)0, 0); EXPECT_STREQ("<unknown>", m.method_str().c_str());
+	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_GET, (http_status)0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_GET, m.method()); EXPECT_STREQ("GET", m.method_str().c_str());
+	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_PUT, (http_status)0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_PUT, m.method()); EXPECT_STREQ("PUT", m.method_str().c_str());
+	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_POST, (http_status)0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_POST, m.method()); EXPECT_STREQ("POST", m.method_str().c_str());
+	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_DELETE, (http_status)0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_DELETE, m.method()); EXPECT_STREQ("DELETE", m.method_str().c_str());
+	    m.set_basic(HTTP_REQUEST, SRS_CONSTS_HTTP_OPTIONS, (http_status)0, 0); EXPECT_EQ(SRS_CONSTS_HTTP_OPTIONS, m.method()); EXPECT_STREQ("OPTIONS", m.method_str().c_str());
 	}
 
 	if (true) {