changed session id from an integer to a string

lib/rtsp/client.rb

@@ -438,7 +438,7 @@ def request message
     #
     # @raise [RTSP::Error] Raises if @session isn't set.
     def ensure_session
-      if @session.empty? || @session[:session_id] <= 0
+      if @session.empty?
         raise RTSP::Error, "Session number not retrieved from server yet.  Run SETUP first."
       end
     end

lib/rtsp/response.rb

@@ -94,8 +94,8 @@ def parse_head head
 
         if line.include? "Session: "
           value = {}
-          line =~ /Session: (\d+)/
-          value[:session_id] = $1.to_i
+          line =~ /Session: ([\w\\$\-\.\+]+)/
+          value[:session_id] = $1
 
           if line =~ /timeout=(.+)/
             value[:timeout] = $1.to_i

spec/rtsp/client_spec.rb

@@ -183,7 +183,7 @@ def setup_client_at(url)
     it "extracts the session number" do
       @client.session.should be_empty
       @client.setup("rtsp://localhost/some_track")
-      @client.session[:session_id].should == 1234567890
+      @client.session[:session_id].should == "1234567890"
     end
 
     it "changes the session_state to :ready" do

spec/rtsp/response_spec.rb

@@ -28,7 +28,7 @@
       it "creates a :session reader with value being a Hash with key/value" do
         subject.stub(:extract_status_line)
         subject.should_receive(:create_reader).with("session",
-          { session_id: 118, timeout: 49 })
+          { session_id: "118", timeout: 49 })
         subject.parse_head(head)
       end
     end
@@ -40,7 +40,7 @@
       it "creates a :session reader with value being a Hash with key/value" do
         subject.stub(:extract_status_line)
         subject.should_receive(:create_reader).with("session",
-          { session_id: 118 })
+          { session_id: "118" })
         subject.parse_head(head)
       end
     end
@@ -181,7 +181,7 @@
     end
 
     it "returns the session" do
-      @response.session[:session_id].should == 118
+      @response.session[:session_id].should == "118"
     end
   end
 
@@ -207,7 +207,7 @@
     end
 
     it "returns the session" do
-      @response.session[:session_id].should == 118
+      @response.session[:session_id].should == "118"
     end
 
     it "returns the rtp_info" do