diff --git a/inc/lweb_header_privat.pbi b/inc/lweb_header_privat.pbi
index 3025546..24fe4b5 100644
--- a/inc/lweb_header_privat.pbi
+++ b/inc/lweb_header_privat.pbi
@@ -109,6 +109,9 @@
   
   Structure session
     Cookie.s
+    TTL.q
+    KillTime.q
+    Daten.s
   EndStructure
   
   Structure host
diff --git a/lweb.pbi b/lweb.pbi
index 95a1a20..41836c7 100644
--- a/lweb.pbi
+++ b/lweb.pbi
@@ -701,13 +701,38 @@ Module lhs_web
               EndIf
               
               ;TODO: Header Handler
-              ; ex. Cookie: #http_head_cookie
+              ; ex. Cookie: #http_head_cookie and #http_head_cookie_set
+              ;TODO: Optimizing and change Cookie Session Handling.
+              ldl::Logging("Check {"+#http_head_cookie+"}:["+Header(#http_head_cookie)+"]")
               If Header(#http_head_cookie) <> ""
                 ldl::Logging("Session:"+Header(#http_head_cookie))
+                If configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie))\KillTime >= Second(Date())
+                  ;Session Lifetime over?
+                  ldl::Logging("Session TTL Over. Resetting.")
+                  DeleteMapElement(configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(), Header(#http_head_cookie))
+                  Header(#http_head_cookie_set) = CreateUUID()
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\Cookie = Header(#http_head_cookie_set)
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\TTL = 3600
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\KillTime = Second(Date()) + configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\TTL
+                ElseIf configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie))\Cookie = Header(#http_head_cookie)
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie))\KillTime = Second(Date()) + configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie))\TTL
+                Else
+                  ;Session unknown:
+                  ldl::Logging("Session unknown. Resetting.")
+                  Header(#http_head_cookie_set) = CreateUUID()
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\Cookie = Header(#http_head_cookie_set)
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\TTL = 3600
+                  configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\KillTime = Second(Date()) + configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\TTL
+                EndIf
                 
               Else
-                Header(#http_head_cookie) = CreateUUID()
-                configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie))\Cookie = Header(#http_head_cookie)
+                ldl::Logging("No Cookie set .... Set one:")
+                Header(#http_head_cookie_set) = CreateUUID()
+                ldl::Logging("Set {"+#http_head_cookie_set+"}:["+Header(#http_head_cookie_set)+"]")
+                configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\Cookie = Header(#http_head_cookie_set)
+                configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\TTL = 3600
+                configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\KillTime = Second(Date()) + configuration\hosts(m_clients(Str(thread_cli_id))\host_id)\sessions(Header(#http_head_cookie_set))\TTL
+                
               EndIf
               
               Select Header(#http_head_method)
@@ -1074,6 +1099,7 @@ Module lhs_web
                               FormatDate("%hh:%ii:%ss GMT+1", Date())
                 
                 ClearMap(Header())
+                
                 If Response(#cha_R_http_head_status) <> ""
                   Header(#http_head_status) = Response(#cha_R_http_head_status)
                 ElseIf response_status <> ""
@@ -1081,9 +1107,11 @@ Module lhs_web
                 Else
                   Header(#http_head_status) = status_get_header("200")
                 EndIf
-                If Response(#http_head_set_cookie) <> ""
-                  Header(#http_head_set_cookie) = Response(#http_head_set_cookie)
+                
+                If Response(#http_head_cookie) <> ""
+                  Header(#http_head_cookie) = Response(#http_head_cookie)
                 EndIf
+                
                 If thread_redirect = #True
                   Header(#http_head_redirect) = file_check(thread_requested, m_clients(Str(thread_cli_id))\host_id)
                   ;TODO: Verify it's a file or a configuration ...
@@ -1102,7 +1130,8 @@ Module lhs_web
                 Header(#http_head_keep_alive) = "timeout=15, max=1000"
                 
                 thread_header = http_header_generate(Header())
-                ldl::Logging("Header:"+thread_header)
+                ldl::Logging("Header:")
+                ldl::Logging(thread_header)
                 ;large File Handling
                 If thread_redirect = #True
                   thread_buffer = AllocateMemory(StringByteLength(thread_header)+12)
@@ -1115,6 +1144,11 @@ Module lhs_web
                 thread_buffer_offset = thread_buffer
                 thread_buffer_length = PokeS(thread_buffer_offset, thread_header,-1, #PB_UTF8|#PB_String_NoZero) : thread_buffer_offset + thread_buffer_length
                 ldl::Logging("Header Finished")
+                ldl::Logging("Header Map fields:")
+                ForEach(Header())
+                  ldl::Logging("Field:["+MapKey(Header())+"] and content:["+Header()+"]")
+                Next
+                ldl::Logging("Header Map fields finished.")
               EndIf
               ;Copy temporary File Buffer to normal Buffer.
               If thread_temp_cache_memory <> 0 And thread_buffer_offset <> 0 And thread_data_size <> 0 And thread_oversized_file = #False And thread_redirect = #False
@@ -1461,7 +1495,8 @@ Module lhs_web
     Debug thread_requested
     file_type = FileSize(configuration\hosts(hostid)\basedir + thread_requested)
     If file_type  = -1
-      thread_requested = "configuration\errorfile404"
+      thread_requested = "configuration\errorfile404"       ;TODO: Change wrong File
+      
     ElseIf file_type = -2
       ;Is a Directory
       If Right(thread_requested,1) = "/" 
diff --git a/lweb.pbp b/lweb.pbp
index 2f8ea7e..f99a221 100644
--- a/lweb.pbp
+++ b/lweb.pbp
@@ -8,7 +8,7 @@
   <section name="data">
     <explorer view="../../../bin/purebasic/examples/" pattern="0"/>
     <log show="1"/>
-    <lastopen date="2024-09-30 17:05" user="renlin" host="renlin-office"/>
+    <lastopen date="2024-10-18 07:07" user="renlin" host="renlin-office"/>
   </section>
   <section name="files">
     <file name="build_tools/src/default_host_xml_export.pb">
@@ -28,88 +28,88 @@
       <fingerprint md5="a3c3072e4eb0a8d09d9e02b2d57b707d"/>
     </file>
     <file name="inc/lweb_header_privat.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="5" panelstate="+-"/>
-      <fingerprint md5="2803c98024b9588db6f85d77f30023e1"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="23" panelstate="+-"/>
+      <fingerprint md5="43e37e412a37cb233bfd64518cac7f04"/>
     </file>
     <file name="inc/lweb_helper.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="6" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="5" panelstate="+-"/>
       <fingerprint md5="e6b5d486bd08b6de7f34a94316df2543"/>
     </file>
     <file name="lhs_lib/NET/lhs_web_helper.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="7" panelstate="+--"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="6" panelstate="+--"/>
       <fingerprint md5="52ed1675b88a463b7ada8cf2003430e1"/>
     </file>
     <file name="inc/lweb_helper_header.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="8" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="7" panelstate="+-"/>
       <fingerprint md5="6ea3e5baa62f8e66063e3b45e17d7e91"/>
     </file>
     <file name="inc/lweb_http.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="9" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="8" panelstate="+-"/>
       <fingerprint md5="a42cddb6a1102779589facc17ba96cd8"/>
     </file>
     <file name="inc/lweb_http_header.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="10" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="9" panelstate="+-"/>
       <fingerprint md5="d7df8e152291b0f91e8316ad8e00191c"/>
     </file>
     <file name="inc/lweb_http_status.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="11" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="10" panelstate="+-"/>
       <fingerprint md5="6f3a4e08bf4318407b547cb5ca794260"/>
     </file>
     <file name="inc/lweb_http_status_header.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="12" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="11" panelstate="+-"/>
       <fingerprint md5="6fd5131bd1dc2558e3abf2160fbef98c"/>
     </file>
     <file name="inc/lweb_http_status_header_private.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="13" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="12" panelstate="+-"/>
       <fingerprint md5="c7736a7cdc87c1ed676b17d9757ba135"/>
     </file>
     <file name="inc/lweb_IP.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="14" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="13" panelstate="+-"/>
       <fingerprint md5="502f26844f0a4b7d7f25924f76b17473"/>
     </file>
     <file name="inc/lweb_IP_header.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="15" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="14" panelstate="+-"/>
       <fingerprint md5="636558037ff2cab03552fb129e2a4f52"/>
     </file>
     <file name="inc/lweb_server_cfg.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="16" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="15" panelstate="+-"/>
       <fingerprint md5="4ef74f56126e4dcbb66e51ac1fe2d605"/>
     </file>
     <file name="inc/lweb_server_cfg_header.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="17" panelstate="+-"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="16" panelstate="+-"/>
       <fingerprint md5="57787e1e3db6c77d81fc5576e124beae"/>
     </file>
     <file name="installation.pb">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="18" panelstate="+"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="17" panelstate="+"/>
       <fingerprint md5="b5ba175b6bddf19d7c039396199911fd"/>
     </file>
     <file name="lhs_lib/NET/lhs_net_socket.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="19" panelstate="+--"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="18" panelstate="+--"/>
       <fingerprint md5="9fc8219dabd4ed47be5289b435d089d6"/>
     </file>
     <file name="lhs_lib/NET/lhs_net_tls.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="20" panelstate="+--"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="19" panelstate="+--"/>
       <fingerprint md5="c586d25a1493f437c7461374a891a715"/>
     </file>
     <file name="lhs_lib/SYS/lhs_log_ext.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="21" panelstate="+--"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="20" panelstate="+--"/>
       <fingerprint md5="f37e027dbab8be85535563b3287f7fff"/>
     </file>
     <file name="lhs_lib/SYS/lhs_sys_debug_wrapper.pbi">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="22" panelstate="+--"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="21" panelstate="+--"/>
       <fingerprint md5="8c3a929cf403d443ec968d21593294a5"/>
     </file>
     <file name="lhttpd.pb">
-      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="23" panelstate="+"/>
+      <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="22" panelstate="+"/>
       <fingerprint md5="f24daf76ff093910b9f4fb635d2a439c"/>
     </file>
     <file name="lweb.pbi">
       <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="24" panelstate="+"/>
-      <fingerprint md5="c1c977e77f83f79bc4e6e2b64b0a6b77"/>
+      <fingerprint md5="5082cb76051665b931fd3a36a5b273e7"/>
     </file>
     <file name="lweb_header.pbi">
       <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="25" panelstate="+"/>
-      <fingerprint md5="53bf42c3a6e95d381fa49bc2d076946b"/>
+      <fingerprint md5="a1dd35af779a1e458e16d58665eb83a8"/>
     </file>
     <file name="server_example.pb">
       <config load="0" scan="1" panel="1" warn="1" lastopen="1" sortindex="26" panelstate="+"/>
diff --git a/lweb_header.pbi b/lweb_header.pbi
index 9483b12..5b5ed6c 100644
--- a/lweb_header.pbi
+++ b/lweb_header.pbi
@@ -100,7 +100,7 @@ DeclareModule lhs_web
   #http_head_connection = "connection:"
   #http_head_keep_alive = "keep-alive:"
   #http_head_cookie = "cookie:"
-  #http_head_set_cookie = "set-cookie:"
+  #http_head_cookie_set = "set-cookie:"
   #http_head_redirect = "location:"
   
   #http_content_type_application_x_www_form_urlencoded = "application/x-www-form-urlencoded"