response the call message with null. 0.9.137

@@ -242,6 +242,7 @@ Supported operating systems and hardware:
 * 2013-10-17, Created.<br/>
 
 ## History
+* v1.0, 2014-06-28, response the call message with null. 0.9.137
 * v1.0, 2014-06-28, fix [#110](https://github.com/winlinvip/simple-rtmp-server/issues/110), thread start segment fault, thread cycle stop destroy thread. 0.9.136
 * v1.0, 2014-06-27, fix [#109](https://github.com/winlinvip/simple-rtmp-server/issues/109), fix the system jump time, adjust system startup time. 0.9.135
 * <strong>v1.0, 2014-06-27, [1.0 mainline5(0.9.134)](https://github.com/winlinvip/simple-rtmp-server/releases/tag/1.0.mainline5) released. 41573 lines.</strong>

@@ -51,6 +51,7 @@ using namespace std;
 #include <srs_protocol_utility.hpp>
 #include <srs_kernel_utility.hpp>
 #include <srs_protocol_msg_array.hpp>
+#include <srs_protocol_amf0.hpp>
 
 // when stream is busy, for example, streaming is already
 // publishing, when a new client to request to publish,
@@ -852,6 +853,22 @@ int SrsRtmpConn::process_play_control_msg(SrsConsumer* consumer, SrsMessage* msg
         return ret;
     }
     
+    // call msg,
+    // support response null first,
+    // @see https://github.com/winlinvip/simple-rtmp-server/issues/106
+    SrsCallPacket* call = dynamic_cast<SrsCallPacket*>(pkt);
+    if (call) {
+        SrsCallResPacket* res = new SrsCallResPacket(call->transaction_id);
+        res->command_object = SrsAmf0Any::null();
+        res->response = SrsAmf0Any::null();
+        if ((ret = rtmp->send_and_free_packet(res, 0)) != ERROR_SUCCESS) {
+            srs_warn("response call failed. ret=%d", ret);
+            return ret;
+        }
+        return ret;
+    }
+    
+    // pause or other msg.
     SrsPausePacket* pause = dynamic_cast<SrsPausePacket*>(pkt);
     if (!pause) {
         srs_info("ignore all amf0/amf3 command except pause.");

@@ -926,6 +926,10 @@ int SrsSource::on_meta_data(SrsMessage* msg, SrsOnMetaDataPacket* metadata)
     metadata->metadata->set("server", SrsAmf0Any::str(RTMP_SIG_SRS_KEY" "RTMP_SIG_SRS_VERSION" ("RTMP_SIG_SRS_URL_SHORT")"));
     metadata->metadata->set("authors", SrsAmf0Any::str(RTMP_SIG_SRS_PRIMARY_AUTHROS));
     
+    // version, for example, 1.0.0
+    // add version to metadata, please donot remove it, for debug.
+    metadata->metadata->set("server_version", SrsAmf0Any::str(RTMP_SIG_SRS_VERSION));
+    
     if ((prop = metadata->metadata->get_property("audiosamplerate")) != NULL) {
         if (prop->is_number()) {
             sample_rate = (int)prop->to_number();

@@ -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 "136"
+#define VERSION_REVISION "137"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"

@@ -700,6 +700,10 @@ int SrsProtocol::do_decode_message(SrsMessageHeader& header, SrsStream* stream,
             srs_info("decode the AMF0/AMF3 closeStream message.");
             *ppacket = packet = new SrsCloseStreamPacket();
             return packet->decode(stream);
+        } else if (header.is_amf0_command() || header.is_amf3_command()) {
+            srs_info("decode the AMF0/AMF3 call message.");
+            *ppacket = packet = new SrsCallPacket();
+            return packet->decode(stream);
         }
         
         // default packet to drop message.
@@ -1976,6 +1980,202 @@ int SrsConnectAppResPacket::encode_packet(SrsStream* stream)
     return ret;
 }
 
+SrsCallPacket::SrsCallPacket()
+{
+    command_name = "";
+    transaction_id = 0;
+    command_object = NULL;
+    arguments = NULL;
+}
+
+SrsCallPacket::~SrsCallPacket()
+{
+    srs_freep(command_object);
+    srs_freep(arguments);
+}
+
+int SrsCallPacket::decode(SrsStream* stream)
+{
+    int ret = ERROR_SUCCESS;
+
+    if ((ret = srs_amf0_read_string(stream, command_name)) != ERROR_SUCCESS) {
+        srs_error("amf0 decode call command_name failed. ret=%d", ret);
+        return ret;
+    }
+    if (command_name.empty()) {
+        ret = ERROR_RTMP_AMF0_DECODE;
+        srs_error("amf0 decode call command_name failed. "
+            "command_name=%s, ret=%d", command_name.c_str(), ret);
+        return ret;
+    }
+    
+    if ((ret = srs_amf0_read_number(stream, transaction_id)) != ERROR_SUCCESS) {
+        srs_error("amf0 decode call transaction_id failed. ret=%d", ret);
+        return ret;
+    }
+    
+    srs_freep(command_object);
+    if ((ret = SrsAmf0Any::discovery(stream, &command_object)) != ERROR_SUCCESS) {
+        srs_error("amf0 discovery call command_object failed. ret=%d", ret);
+        return ret;
+    }
+    if ((ret = command_object->read(stream)) != ERROR_SUCCESS) {
+        srs_error("amf0 decode call command_object failed. ret=%d", ret);
+        return ret;
+    }
+    
+    if (!stream->empty()) {
+        srs_freep(arguments);
+        if ((ret = SrsAmf0Any::discovery(stream, &arguments)) != ERROR_SUCCESS) {
+            srs_error("amf0 discovery call arguments failed. ret=%d", ret);
+            return ret;
+        }
+        if ((ret = arguments->read(stream)) != ERROR_SUCCESS) {
+            srs_error("amf0 decode call arguments failed. ret=%d", ret);
+            return ret;
+        }
+    }
+    
+    srs_info("amf0 decode call packet success");
+    
+    return ret;
+}
+
+int SrsCallPacket::get_perfer_cid()
+{
+    return RTMP_CID_OverConnection;
+}
+
+int SrsCallPacket::get_message_type()
+{
+    return RTMP_MSG_AMF0CommandMessage;
+}
+
+int SrsCallPacket::get_size()
+{
+    int size = 0;
+    
+    size += SrsAmf0Size::str(command_name) + SrsAmf0Size::number();
+    
+    if (command_object) {
+        size += command_object->total_size();
+    }
+    
+    if (arguments) {
+        size += arguments->total_size();
+    }
+    
+    return size;
+}
+
+int SrsCallPacket::encode_packet(SrsStream* stream)
+{
+    int ret = ERROR_SUCCESS;
+    
+    if ((ret = srs_amf0_write_string(stream, command_name)) != ERROR_SUCCESS) {
+        srs_error("encode command_name failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode command_name success.");
+    
+    if ((ret = srs_amf0_write_number(stream, transaction_id)) != ERROR_SUCCESS) {
+        srs_error("encode transaction_id failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode transaction_id success.");
+    
+    if (command_object && (ret = command_object->write(stream)) != ERROR_SUCCESS) {
+        srs_error("encode command_object failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode command_object success.");
+    
+    if (arguments && (ret = arguments->write(stream)) != ERROR_SUCCESS) {
+        srs_error("encode arguments failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode arguments success.");
+    
+    srs_info("encode create stream request packet success.");
+    
+    return ret;
+}
+
+SrsCallResPacket::SrsCallResPacket(double _transaction_id)
+{
+    command_name = RTMP_AMF0_COMMAND_RESULT;
+    transaction_id = _transaction_id;
+    command_object = NULL;
+    response = NULL;
+}
+
+SrsCallResPacket::~SrsCallResPacket()
+{
+    srs_freep(command_object);
+    srs_freep(response);
+}
+
+int SrsCallResPacket::get_perfer_cid()
+{
+    return RTMP_CID_OverConnection;
+}
+
+int SrsCallResPacket::get_message_type()
+{
+    return RTMP_MSG_AMF0CommandMessage;
+}
+
+int SrsCallResPacket::get_size()
+{
+    int size = 0;
+    
+    size += SrsAmf0Size::str(command_name) + SrsAmf0Size::number();
+    
+    if (command_object) {
+        size += command_object->total_size();
+    }
+    
+    if (response) {
+        size += response->total_size();
+    }
+    
+    return size;
+}
+
+int SrsCallResPacket::encode_packet(SrsStream* stream)
+{
+    int ret = ERROR_SUCCESS;
+    
+    if ((ret = srs_amf0_write_string(stream, command_name)) != ERROR_SUCCESS) {
+        srs_error("encode command_name failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode command_name success.");
+    
+    if ((ret = srs_amf0_write_number(stream, transaction_id)) != ERROR_SUCCESS) {
+        srs_error("encode transaction_id failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode transaction_id success.");
+    
+    if (command_object && (ret = command_object->write(stream)) != ERROR_SUCCESS) {
+        srs_error("encode command_object failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode command_object success.");
+    
+    if (response && (ret = response->write(stream)) != ERROR_SUCCESS) {
+        srs_error("encode response failed. ret=%d", ret);
+        return ret;
+    }
+    srs_verbose("encode response success.");
+    
+    
+    srs_info("encode call response packet success.");
+    
+    return ret;
+}
+
 SrsCreateStreamPacket::SrsCreateStreamPacket()
 {
     command_name = RTMP_AMF0_COMMAND_CREATE_STREAM;

@@ -534,6 +534,73 @@ protected:
 };
 
 /**
+* 4.1.2. Call
+* The call method of the NetConnection object runs remote procedure
+* calls (RPC) at the receiving end. The called RPC name is passed as a
+* parameter to the call command.
+*/
+class SrsCallPacket : public SrsPacket
+{
+protected:
+    virtual const char* get_class_name()
+    {
+        return CLASS_NAME_STRING(SrsCallPacket);
+    }
+public:
+    std::string command_name;
+    double transaction_id;
+    /**
+    * If there exists any command info this
+    * is set, else this is set to null type.
+    */
+    SrsAmf0Any* command_object;
+    // Any optional arguments to be provided
+    SrsAmf0Any* arguments;
+public:
+    SrsCallPacket();
+    virtual ~SrsCallPacket();
+public:
+    virtual int decode(SrsStream* stream);
+public:
+    virtual int get_perfer_cid();
+public:
+    virtual int get_message_type();
+protected:
+    virtual int get_size();
+    virtual int encode_packet(SrsStream* stream);
+};
+/**
+* response for SrsCallPacket.
+*/
+class SrsCallResPacket : public SrsPacket
+{
+protected:
+    virtual const char* get_class_name()
+    {
+        return CLASS_NAME_STRING(SrsCallResPacket);
+    }
+public:
+    std::string command_name;
+    double transaction_id;
+    // If there exists any command info this
+    // is set, else this is set to null type.
+    SrsAmf0Any* command_object;
+    // Response from the method that was
+    // called.
+    SrsAmf0Any* response;
+public:
+    SrsCallResPacket(double _transaction_id);
+    virtual ~SrsCallResPacket();
+public:
+    virtual int get_perfer_cid();
+public:
+    virtual int get_message_type();
+protected:
+    virtual int get_size();
+    virtual int encode_packet(SrsStream* stream);
+};
+
+/**
 * 4.1.3. createStream
 * The client sends this command to the server to create a logical
 * channel for message communication The publishing of audio, video, and
@@ -592,6 +659,7 @@ protected:
     virtual int get_size();
     virtual int encode_packet(SrsStream* stream);
 };
+
 /**
 * client close stream packet.
 */