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diff --git a/build/.vs/webcc/v17/ipch/AutoPCH/aba0608442cc6d58/BODY.ipch b/build/.vs/webcc/v17/ipch/AutoPCH/aba0608442cc6d58/BODY.ipch
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diff --git a/build/CMakeCache.txt b/build/CMakeCache.txt
index 395ddc4..9d8b1a0 100644
--- a/build/CMakeCache.txt
+++ b/build/CMakeCache.txt
@@ -514,7 +514,7 @@ CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO-ADVANCED:INTERNAL=1
 //ADVANCED property for variable: CMAKE_VERBOSE_MAKEFILE
 CMAKE_VERBOSE_MAKEFILE-ADVANCED:INTERNAL=1
 //Details about finding Boost
-FIND_PACKAGE_MESSAGE_DETAILS_Boost:INTERNAL=[F:/vcpkg/installed/x64-windows/include][cfound components: system date_time ][v1.79.0(1.66.0)]
+FIND_PACKAGE_MESSAGE_DETAILS_Boost:INTERNAL=[F:/vcpkg/installed/x64-windows/include][cfound components: system date_time ][v1.80.0(1.66.0)]
 //Details about finding GTest
 FIND_PACKAGE_MESSAGE_DETAILS_GTest:INTERNAL=[F:/vcpkg/installed/x64-windows/share/gtest/GTestConfig.cmake][c ][v1.12.1()]
 //Details about finding OpenSSL
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diff --git a/build/examples/hello_world_server.dir/Debug/hello_world_server.obj b/build/examples/hello_world_server.dir/Debug/hello_world_server.obj
index 7ac00c4..1c39c10 100644
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diff --git a/build/examples/hello_world_server.dir/Debug/vc143.pdb b/build/examples/hello_world_server.dir/Debug/vc143.pdb
index 818e273..281f617 100644
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diff --git a/build/examples/hello_world_server.dir/Release/hello_wo.816E3D1D.tlog/CL.read.1.tlog b/build/examples/hello_world_server.dir/Release/hello_wo.816E3D1D.tlog/CL.read.1.tlog
index 0154f09..a7e1cdc 100644
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diff --git a/build/examples/hello_world_server.dir/Release/hello_wo.816E3D1D.tlog/link.read.1.tlog b/build/examples/hello_world_server.dir/Release/hello_wo.816E3D1D.tlog/link.read.1.tlog
index 2f5a4bd..4df2205 100644
Binary files a/build/examples/hello_world_server.dir/Release/hello_wo.816E3D1D.tlog/link.read.1.tlog and b/build/examples/hello_world_server.dir/Release/hello_wo.816E3D1D.tlog/link.read.1.tlog differ
diff --git a/build/examples/hello_world_server.dir/Release/hello_world_server.log b/build/examples/hello_world_server.dir/Release/hello_world_server.log
index 57fac2f..a9d16b1 100644
--- a/build/examples/hello_world_server.dir/Release/hello_world_server.log
+++ b/build/examples/hello_world_server.dir/Release/hello_world_server.log
@@ -1,4 +1,3 @@
   Building Custom Rule F:/WebCC/webcc/examples/CMakeLists.txt
-D:\Program Files\Microsoft Visual Studio\2022\Professional\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(247,5): warning MSB8065: 项“F:\WebCC\webcc\examples\CMakeLists.txt”的自定义生成成功，但尚未创建指定的输出“f:\webcc\webcc\build\examples\cmakefiles\generate.stamp”。这可能会导致增量生成无法正常工作。
   hello_world_server.cc
   hello_world_server.vcxproj -> F:\WebCC\webcc\build\bin\release\hello_world_server.exe
diff --git a/build/examples/hello_world_server.dir/Release/hello_world_server.obj b/build/examples/hello_world_server.dir/Release/hello_world_server.obj
index 2ff484c..13321cf 100644
Binary files a/build/examples/hello_world_server.dir/Release/hello_world_server.obj and b/build/examples/hello_world_server.dir/Release/hello_world_server.obj differ
diff --git a/build/examples/server_states.dir/Debug/server_states.ilk b/build/examples/server_states.dir/Debug/server_states.ilk
index b7df19e..11a3c1a 100644
Binary files a/build/examples/server_states.dir/Debug/server_states.ilk and b/build/examples/server_states.dir/Debug/server_states.ilk differ
diff --git a/build/examples/server_states.dir/Debug/server_states.log b/build/examples/server_states.dir/Debug/server_states.log
index 15669dc..473a2e3 100644
--- a/build/examples/server_states.dir/Debug/server_states.log
+++ b/build/examples/server_states.dir/Debug/server_states.log
@@ -1,3 +1,4 @@
   Building Custom Rule F:/WebCC/webcc/examples/CMakeLists.txt
+D:\Program Files\Microsoft Visual Studio\2022\Professional\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(247,5): warning MSB8065: 项“F:\WebCC\webcc\examples\CMakeLists.txt”的自定义生成成功，但尚未创建指定的输出“f:\webcc\webcc\build\examples\cmakefiles\generate.stamp”。这可能会导致增量生成无法正常工作。
   server_states.cc
   server_states.vcxproj -> F:\WebCC\webcc\build\bin\debug\server_states.exe
diff --git a/build/examples/server_states.dir/Debug/server_states.obj b/build/examples/server_states.dir/Debug/server_states.obj
index cda8227..767402c 100644
Binary files a/build/examples/server_states.dir/Debug/server_states.obj and b/build/examples/server_states.dir/Debug/server_states.obj differ
diff --git a/build/examples/server_states.dir/Debug/server_states.tlog/CL.read.1.tlog b/build/examples/server_states.dir/Debug/server_states.tlog/CL.read.1.tlog
index 39b74a7..cfb464b 100644
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diff --git a/build/examples/server_states.dir/Debug/server_states.tlog/link.command.1.tlog b/build/examples/server_states.dir/Debug/server_states.tlog/link.command.1.tlog
index 258e48e..636229d 100644
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diff --git a/build/examples/server_states.dir/Debug/server_states.tlog/link.read.1.tlog b/build/examples/server_states.dir/Debug/server_states.tlog/link.read.1.tlog
index 03b13d4..889d505 100644
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diff --git a/build/examples/server_states.dir/Debug/vc143.pdb b/build/examples/server_states.dir/Debug/vc143.pdb
index 8b05d2b..05818f6 100644
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diff --git a/build/examples/server_states.dir/Release/server_states.log b/build/examples/server_states.dir/Release/server_states.log
index ad5f131..04af53b 100644
--- a/build/examples/server_states.dir/Release/server_states.log
+++ b/build/examples/server_states.dir/Release/server_states.log
@@ -1,4 +1,3 @@
   Building Custom Rule F:/WebCC/webcc/examples/CMakeLists.txt
-D:\Program Files\Microsoft Visual Studio\2022\Professional\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(247,5): warning MSB8065: 项“F:\WebCC\webcc\examples\CMakeLists.txt”的自定义生成成功，但尚未创建指定的输出“f:\webcc\webcc\build\examples\cmakefiles\generate.stamp”。这可能会导致增量生成无法正常工作。
   server_states.cc
   server_states.vcxproj -> F:\WebCC\webcc\build\bin\release\server_states.exe
diff --git a/build/examples/server_states.dir/Release/server_states.obj b/build/examples/server_states.dir/Release/server_states.obj
index 0ab017b..9095553 100644
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diff --git a/build/examples/server_states.dir/Release/server_states.tlog/CL.read.1.tlog b/build/examples/server_states.dir/Release/server_states.tlog/CL.read.1.tlog
index 96ca86e..4587b19 100644
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diff --git a/build/examples/server_states.dir/Release/server_states.tlog/link.read.1.tlog b/build/examples/server_states.dir/Release/server_states.tlog/link.read.1.tlog
index 3570c8c..f4f1d7d 100644
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diff --git a/build/examples/static_file_server.dir/Debug/static_f.7C54F8F0.tlog/CL.read.1.tlog b/build/examples/static_file_server.dir/Debug/static_f.7C54F8F0.tlog/CL.read.1.tlog
index 7769673..ddf9c81 100644
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diff --git a/build/examples/static_file_server.dir/Debug/static_f.7C54F8F0.tlog/link.command.1.tlog b/build/examples/static_file_server.dir/Debug/static_f.7C54F8F0.tlog/link.command.1.tlog
index cfd790f..dfcb606 100644
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diff --git a/build/examples/static_file_server.dir/Debug/static_f.7C54F8F0.tlog/link.read.1.tlog b/build/examples/static_file_server.dir/Debug/static_f.7C54F8F0.tlog/link.read.1.tlog
index ef555cc..c9825d3 100644
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diff --git a/build/examples/static_file_server.dir/Debug/static_file_server.ilk b/build/examples/static_file_server.dir/Debug/static_file_server.ilk
index 8e4c3e3..9af9f95 100644
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diff --git a/build/examples/static_file_server.dir/Debug/static_file_server.log b/build/examples/static_file_server.dir/Debug/static_file_server.log
index b7df73b..712ec5d 100644
--- a/build/examples/static_file_server.dir/Debug/static_file_server.log
+++ b/build/examples/static_file_server.dir/Debug/static_file_server.log
@@ -1,3 +1,4 @@
   Building Custom Rule F:/WebCC/webcc/examples/CMakeLists.txt
+D:\Program Files\Microsoft Visual Studio\2022\Professional\MSBuild\Microsoft\VC\v170\Microsoft.CppCommon.targets(247,5): warning MSB8065: 项“F:\WebCC\webcc\examples\CMakeLists.txt”的自定义生成成功，但尚未创建指定的输出“f:\webcc\webcc\build\examples\cmakefiles\generate.stamp”。这可能会导致增量生成无法正常工作。
   static_file_server.cc
   static_file_server.vcxproj -> F:\WebCC\webcc\build\bin\debug\static_file_server.exe
diff --git a/build/examples/static_file_server.dir/Debug/static_file_server.obj b/build/examples/static_file_server.dir/Debug/static_file_server.obj
index 70f78ba..b189087 100644
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diff --git a/build/examples/static_file_server.dir/Debug/vc143.pdb b/build/examples/static_file_server.dir/Debug/vc143.pdb
index e9ed3cf..3a5336a 100644
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diff --git a/build/examples/static_file_server.dir/Release/static_f.7C54F8F0.tlog/CL.read.1.tlog b/build/examples/static_file_server.dir/Release/static_f.7C54F8F0.tlog/CL.read.1.tlog
index 7769673..ddf9c81 100644
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diff --git a/build/examples/static_file_server.dir/Release/static_f.7C54F8F0.tlog/link.read.1.tlog b/build/examples/static_file_server.dir/Release/static_f.7C54F8F0.tlog/link.read.1.tlog
index 1ca1ab1..baf3eb0 100644
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diff --git a/build/examples/static_file_server.dir/Release/static_file_server.obj b/build/examples/static_file_server.dir/Release/static_file_server.obj
index 7f1c362..4bac05d 100644
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diff --git a/build/examples/url_unicode.dir/Debug/encoding.obj b/build/examples/url_unicode.dir/Debug/encoding.obj
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index d792936..e6e6ef4 100644
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index e489829..ef1b050 100644
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index f5fb507..9e8b9b8 100644
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index 3301053..493abaa 100644
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index b5859b3..158f23d 100644
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index 5588c96..a3d6126 100644
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index d2a7b85..8cf02d2 100644
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index 94747fe..3a50041 100644
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index 7b54dba..cdcdd44 100644
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index 7426ad1..f41bdb9 100644
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index b2c6c56..fcd3afa 100644
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index 350baa4..a50ed1c 100644
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index c82cd56..6d1e326 100644
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index 39e2290..00454b6 100644
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index 9fd834c..1bc4663 100644
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index 698941c..f5dfb35 100644
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index 7ebd857..652915d 100644
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index ccc7fc3..db19b86 100644
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index 5c1f2fb..b4a14f4 100644
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index c871afd..ae3fb91 100644
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index 313792c..432f518 100644
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index e729007..6a31b9d 100644
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index 1187608..aa9457c 100644
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index 4e728b6..7de2732 100644
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index 20ab99b..647c686 100644
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index 39dd860..a739997 100644
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index 67d2926..9b3aa44 100644
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index 603a16e..2c8235d 100644
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index 5f76f71..3033d47 100644
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index 6815b4d..db68b30 100644
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index ca01b14..5a22245 100644
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index 128187f..fae31dc 100644
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index 168a73a..dc35970 100644
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index 591f1b5..c3a2e48 100644
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index b9a4274..c78e2bc 100644
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index f13e44c..f6049c5 100644
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index a1f7218..a1d216b 100644
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index e26415f..d679f84 100644
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index f8a0c66..c70d476 100644
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index 1985664..30a5b31 100644
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index 70178ca..9a45414 100644
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index 3a90a2b..992eb24 100644
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diff --git a/build/webcc/webcc.dir/Release/router.obj b/build/webcc/webcc.dir/Release/router.obj
index 7c2ba9a..3c0c7d0 100644
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diff --git a/build/webcc/webcc.dir/Release/server.obj b/build/webcc/webcc.dir/Release/server.obj
index c4526ac..2a8e635 100644
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diff --git a/build/webcc/webcc.dir/Release/socket.obj b/build/webcc/webcc.dir/Release/socket.obj
index bf4446b..77bc7b8 100644
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diff --git a/build/webcc/webcc.dir/Release/ssl_socket.obj b/build/webcc/webcc.dir/Release/ssl_socket.obj
index 0b0d4e1..7304cb7 100644
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diff --git a/build/webcc/webcc.dir/Release/string.obj b/build/webcc/webcc.dir/Release/string.obj
index f03d3ed..7665b21 100644
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diff --git a/build/webcc/webcc.dir/Release/url.obj b/build/webcc/webcc.dir/Release/url.obj
index 64d3adb..c63b046 100644
Binary files a/build/webcc/webcc.dir/Release/url.obj and b/build/webcc/webcc.dir/Release/url.obj differ
diff --git a/build/webcc/webcc.dir/Release/utility.obj b/build/webcc/webcc.dir/Release/utility.obj
index 03846e0..45fa8e1 100644
Binary files a/build/webcc/webcc.dir/Release/utility.obj and b/build/webcc/webcc.dir/Release/utility.obj differ
diff --git a/build/webcc/webcc.dir/Release/webcc.Build.CppClean.log b/build/webcc/webcc.dir/Release/webcc.Build.CppClean.log
index 89f8683..8a9e02f 100644
--- a/build/webcc/webcc.dir/Release/webcc.Build.CppClean.log
+++ b/build/webcc/webcc.dir/Release/webcc.Build.CppClean.log
@@ -1,36 +1,7 @@
-f:\webcc\webcc\build\webcc\webcc.dir\release\server.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\router.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\response_parser.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\response_builder.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\response.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\request_parser.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\request_builder.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\request.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\parser.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\message.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\logger.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\globals.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\connection_pool.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\connection.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\common.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\client_session.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\client_pool.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\client_base.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\body.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\base64.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\ssl_socket.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\utility.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\url.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\string.obj
-f:\webcc\webcc\build\webcc\webcc.dir\release\socket.obj
 f:\webcc\webcc\build\webcc\cmakefiles\generate.stamp
-f:\webcc\webcc\build\bin\release\webcc.lib
 f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\cl.command.1.tlog
 f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\cl.read.1.tlog
 f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\cl.write.1.tlog
 f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\custombuild.command.1.tlog
 f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\custombuild.read.1.tlog
 f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\custombuild.write.1.tlog
-f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\lib-link.read.1.tlog
-f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\lib-link.write.1.tlog
-f:\webcc\webcc\build\webcc\webcc.dir\release\webcc.tlog\lib.command.1.tlog
diff --git a/build/webcc/webcc.dir/Release/webcc.tlog/CL.read.1.tlog b/build/webcc/webcc.dir/Release/webcc.tlog/CL.read.1.tlog
index 5a22ad7..b374404 100644
Binary files a/build/webcc/webcc.dir/Release/webcc.tlog/CL.read.1.tlog and b/build/webcc/webcc.dir/Release/webcc.tlog/CL.read.1.tlog differ
diff --git a/build/x64/Release/INSTALL/INSTALL.log b/build/x64/Release/INSTALL/INSTALL.log
index 68511e7..94afe8e 100644
--- a/build/x64/Release/INSTALL/INSTALL.log
+++ b/build/x64/Release/INSTALL/INSTALL.log
@@ -11,7 +11,7 @@
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/connection_pool.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/fs.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/globals.h
-  -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/logger.h
+  -- Installing: F:/vcpkg/installed/x64-windows/include/webcc/logger.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/message.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/parser.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/queue.h
@@ -32,4 +32,4 @@
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/view.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/ssl_socket.h
   -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/ssl_client.h
-  -- Up-to-date: F:/vcpkg/installed/x64-windows/include/webcc/config.h
+  -- Installing: F:/vcpkg/installed/x64-windows/include/webcc/config.h
diff --git a/webcc/logger.cc b/webcc/logger.cc
index 243039d..1a59ebe 100644
--- a/webcc/logger.cc
+++ b/webcc/logger.cc
@@ -19,89 +19,104 @@
 #include <unistd.h>
 #include <sys/syscall.h>  // For SYS_xxx definitions
 #include <sys/types.h>
+#include "logger.h"
 #endif  // defined(_WIN32) || defined(_WIN64)
 
-namespace webcc {
+namespace webcc
+{
 
 // -----------------------------------------------------------------------------
 
-static std::string g_main_thread_id;
+	static std::string g_main_thread_id;
 
-static const char* kLevelNames[] = {
-  "VERB", "INFO", "USER", "WARN", "ERRO"
-};
+	static const char* kLevelNames[] = {
+	  "VERB", "INFO", "USER", "WARN", "ERRO"
+	};
 
-// -----------------------------------------------------------------------------
+	//UnknownObject: Add For Dynamic Log Level
+	static bool UseDynamicLogLevel = false;
+	static int DynamicLogLevel = WEBCC_VERB;
 
-static FILE* FOpen(const fs::path& path, bool overwrite) {
+	// -----------------------------------------------------------------------------
+
+	static FILE* FOpen(const fs::path& path, bool overwrite)
+	{
 #if (defined(_WIN32) || defined(_WIN64))
-  return _wfopen(path.wstring().c_str(), overwrite ? L"w+" : L"a+");
+		return _wfopen(path.wstring().c_str(), overwrite ? L"w+" : L"a+");
 #else
-  return fopen(path.string().c_str(), overwrite ? "w+" : "a+");
+		return fopen(path.string().c_str(), overwrite ? "w+" : "a+");
 #endif  // defined(_WIN32) || defined(_WIN64)
-}
+	}
 
-struct Logger {
-  Logger() = default;
+	struct Logger
+	{
+		Logger() = default;
 
-  ~Logger() {
-    if (file != nullptr) {
-      fclose(file);
-    }
-  }
+		~Logger()
+		{
+			if (file != nullptr)
+			{
+				fclose(file);
+			}
+		}
 
-  void Init(const fs::path& path, int _modes) {
-    modes = _modes;
+		void Init(const fs::path& path, int _modes)
+		{
+			modes = _modes;
 
-    // Create log file only if necessary.
-    if ((modes & LOG_FILE) != 0 && !path.empty()) {
-      file = FOpen(path, (modes & LOG_OVERWRITE) != 0);
-    }
-  }
+			// Create log file only if necessary.
+			if ((modes & LOG_FILE) != 0 && !path.empty())
+			{
+				file = FOpen(path, (modes & LOG_OVERWRITE) != 0);
+			}
+		}
 
-  FILE* file = nullptr;
-  int modes = 0;
-  std::mutex mutex;
-};
+		FILE* file = nullptr;
+		int modes = 0;
+		std::mutex mutex;
+	};
 
-// Global logger.
-static Logger g_logger;
+	// Global logger.
+	static Logger g_logger;
 
-// -----------------------------------------------------------------------------
+	// -----------------------------------------------------------------------------
 
-// The colors related code was adapted from Loguru. See:
-//   https://github.com/emilk/loguru/blob/master/loguru.cpp
-// Thanks to Loguru!
+	// The colors related code was adapted from Loguru. See:
+	//   https://github.com/emilk/loguru/blob/master/loguru.cpp
+	// Thanks to Loguru!
 
-static const bool g_terminal_has_color = []() {
+	static const bool g_terminal_has_color = []()
+	{
 #if (defined(_WIN32) || defined(_WIN64))
 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
 #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
 #endif
   // NOTE: Need Windows 10.
-  HANDLE h_output = GetStdHandle(STD_OUTPUT_HANDLE);
-  if (h_output != INVALID_HANDLE_VALUE) {
-    DWORD mode = 0;
-    GetConsoleMode(h_output, &mode);
-    mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
-    return SetConsoleMode(h_output, mode) != 0;
-  }
-  return false;
+		HANDLE h_output = GetStdHandle(STD_OUTPUT_HANDLE);
+		if (h_output != INVALID_HANDLE_VALUE)
+		{
+			DWORD mode = 0;
+			GetConsoleMode(h_output, &mode);
+			mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+			return SetConsoleMode(h_output, mode) != 0;
+		}
+		return false;
 #else
-  const char* term = getenv("TERM");
-  if (term == nullptr) {
-    return false;
-  }
+		const char* term = getenv("TERM");
+		if (term == nullptr)
+		{
+			return false;
+		}
 
-  return strcmp(term, "cygwin") == 0 || strcmp(term, "linux") == 0 ||
-         strcmp(term, "rxvt-unicode-256color") == 0 ||
-         strcmp(term, "screen") == 0 || strcmp(term, "screen-256color") == 0 ||
-         strcmp(term, "screen.xterm-256color") == 0 ||
-         strcmp(term, "tmux-256color") == 0 || strcmp(term, "xterm") == 0 ||
-         strcmp(term, "xterm-256color") == 0 ||
-         strcmp(term, "xterm-termite") == 0 || strcmp(term, "xterm-color") == 0;
+		return strcmp(term, "cygwin") == 0 || strcmp(term, "linux") == 0 ||
+			strcmp(term, "rxvt-unicode-256color") == 0 ||
+			strcmp(term, "screen") == 0 || strcmp(term, "screen-256color") == 0 ||
+			strcmp(term, "screen.xterm-256color") == 0 ||
+			strcmp(term, "tmux-256color") == 0 || strcmp(term, "xterm") == 0 ||
+			strcmp(term, "xterm-256color") == 0 ||
+			strcmp(term, "xterm-termite") == 0 || strcmp(term, "xterm-color") == 0;
 #endif
-}();
+	}();
 
 #if (defined(_WIN32) || defined(_WIN64))
 #define VTSEQ(ID) ("\x1b[1;" #ID "m")
@@ -133,140 +148,182 @@ static const bool g_terminal_has_color = []() {
 // std::this_thread::get_id() returns a very long ID (same as pthread_self())
 // on Linux, e.g., 140219133990656. syscall(SYS_gettid) is much prefered because
 // it's shorter and the same as `ps -T -p <pid>` output.
-static std::string DoGetThreadID() {
+	static std::string DoGetThreadID()
+	{
 #if (defined(_WIN32) || defined(_WIN64))
-  auto thread_id = std::this_thread::get_id();
-  std::ostringstream ss;
-  ss << thread_id;
-  return ss.str();
+		auto thread_id = std::this_thread::get_id();
+		std::ostringstream ss;
+		ss << thread_id;
+		return ss.str();
 #else
-  return std::to_string(syscall(SYS_gettid));
+		return std::to_string(syscall(SYS_gettid));
 #endif
-}
+	}
 
-static std::string GetThreadID() {
-  std::string thread_id = DoGetThreadID();
-  if (thread_id == g_main_thread_id) {
-    return "main";
-  }
-  return thread_id;
-}
+	static std::string GetThreadID()
+	{
+		std::string thread_id = DoGetThreadID();
+		if (thread_id == g_main_thread_id)
+		{
+			return "main";
+		}
+		return thread_id;
+	}
 
-static fs::path InitLogPath(const fs::path& dir) {
-  if (dir.empty()) {
-    return fs::current_path() / WEBCC_LOG_FILE_NAME;
-  }
+	static fs::path InitLogPath(const fs::path& dir)
+	{
+		if (dir.empty())
+		{
+			return fs::current_path() / WEBCC_LOG_FILE_NAME;
+		}
 
-  fs::error_code ec;
-  if (!fs::exists(dir, ec) || !fs::is_directory(dir, ec)) {
-    if (!fs::create_directories(dir, ec) || ec) {
-      return {};
-    }
-  }
+		fs::error_code ec;
+		if (!fs::exists(dir, ec) || !fs::is_directory(dir, ec))
+		{
+			if (!fs::create_directories(dir, ec) || ec)
+			{
+				return {};
+			}
+		}
 
-  return (dir / WEBCC_LOG_FILE_NAME);
-}
+		return (dir / WEBCC_LOG_FILE_NAME);
+	}
 
-void LogInit(const fs::path& dir, int modes) {
-  // Suppose this is called from the main thread.
-  g_main_thread_id = DoGetThreadID();
+	void LogInit(const fs::path& dir, int modes)
+	{
+		// Suppose this is called from the main thread.
+		g_main_thread_id = DoGetThreadID();
 
-  if ((modes & LOG_FILE) != 0) {
-    g_logger.Init(InitLogPath(dir), modes);
-  } else {
-    g_logger.Init({}, modes);
-  }
-}
+		if ((modes & LOG_FILE) != 0)
+		{
+			g_logger.Init(InitLogPath(dir), modes);
+		}
+		else
+		{
+			g_logger.Init({}, modes);
+		}
+	}
 
-static std::string GetTimestamp() {
-  using system_clock = std::chrono::system_clock;
-  using milliseconds = std::chrono::milliseconds;
+	void LogInit(const fs::path& dir, int modes, int log_level)
+	{
+		g_main_thread_id = DoGetThreadID();
+		if ((modes & LOG_FILE) != 0)
+		{
+			g_logger.Init(InitLogPath(dir), modes);
+		}
+		else
+		{
+			g_logger.Init({}, modes);
+		}
+		UseDynamicLogLevel = true;
+		DynamicLogLevel = log_level;
+	}
 
-  auto now = system_clock::now();
-  std::time_t t = system_clock::to_time_t(now);
+	static std::string GetTimestamp()
+	{
+		using system_clock = std::chrono::system_clock;
+		using milliseconds = std::chrono::milliseconds;
 
-  std::ostringstream ss;
-  ss << std::put_time(std::localtime(&t), "%Y-%m-%d %H:%M:%S");
+		auto now = system_clock::now();
+		std::time_t t = system_clock::to_time_t(now);
 
-  milliseconds milli_seconds =
-      std::chrono::duration_cast<milliseconds>(now.time_since_epoch());
-  std::string micro_seconds_str = std::to_string(milli_seconds.count() % 1000);
-  while (micro_seconds_str.size() < 3) {
-    micro_seconds_str = "0" + micro_seconds_str;
-  }
+		std::ostringstream ss;
+		ss << std::put_time(std::localtime(&t), "%Y-%m-%d %H:%M:%S");
 
-  ss << "." << micro_seconds_str;
+		milliseconds milli_seconds =
+			std::chrono::duration_cast<milliseconds>(now.time_since_epoch());
+		std::string micro_seconds_str = std::to_string(milli_seconds.count() % 1000);
+		while (micro_seconds_str.size() < 3)
+		{
+			micro_seconds_str = "0" + micro_seconds_str;
+		}
 
-  return ss.str();
-}
+		ss << "." << micro_seconds_str;
 
-void Log(int level, const char* file, int line, const char* format, ...) {
-  assert(format != nullptr);
+		return ss.str();
+	}
 
-  std::string timestamp = GetTimestamp();
-  std::string thread_id = GetThreadID();
+	void Log(int level, const char* file, int line, const char* format, ...)
+	{
+		assert(format != nullptr);
 
-  if ((g_logger.modes & LOG_FILE) != 0 && g_logger.file != nullptr) {
-    std::lock_guard<std::mutex> lock(g_logger.mutex);
+		if (UseDynamicLogLevel && (DynamicLogLevel > level))
+			return;
 
-    va_list args;
-    va_start(args, format);
+		std::string timestamp = GetTimestamp();
+		std::string thread_id = GetThreadID();
 
-    fprintf(g_logger.file, "%s, %s, %7s, %25s, %4d, ",
-            timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
-            file, line);
+		if ((g_logger.modes & LOG_FILE) != 0 && g_logger.file != nullptr)
+		{
+			std::lock_guard<std::mutex> lock(g_logger.mutex);
 
-    vfprintf(g_logger.file, format, args);
+			va_list args;
+			va_start(args, format);
 
-    fprintf(g_logger.file, "\n");
+			fprintf(g_logger.file, "%s, %s, %7s, %25s, %4d, ",
+				timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
+				file, line);
 
-    if ((g_logger.modes & LOG_FLUSH) != 0) {
-      fflush(g_logger.file);
-    }
+			vfprintf(g_logger.file, format, args);
 
-    va_end(args);
-  }
+			fprintf(g_logger.file, "\n");
 
-  if ((g_logger.modes & LOG_CONSOLE) != 0) {
-    std::lock_guard<std::mutex> lock(g_logger.mutex);
+			if ((g_logger.modes & LOG_FLUSH) != 0)
+			{
+				fflush(g_logger.file);
+			}
 
-    va_list args;
-    va_start(args, format);
+			va_end(args);
+		}
 
-    if (g_terminal_has_color) {
-      if (level < WEBCC_WARN) {
-        fprintf(stderr, "%s%s, %s, %7s, %25s, %4d, ",
-                TERM_RESET,
-                timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
-                file, line);
-      } else {
-        fprintf(stderr, "%s%s%s, %s, %7s, %25s, %4d, ",
-                TERM_RESET,
-                level == WEBCC_WARN ? TERM_YELLOW : TERM_RED,
-                timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
-                file, line);
-      }
+		if ((g_logger.modes & LOG_CONSOLE) != 0)
+		{
+			std::lock_guard<std::mutex> lock(g_logger.mutex);
 
-      vfprintf(stderr, format, args);
+			va_list args;
+			va_start(args, format);
 
-      fprintf(stderr, "%s\n", TERM_RESET);
-    } else {
-      fprintf(stderr, "%s, %s, %7s, %25s, %4d, ",
-              timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
-              file, line);
+			if (g_terminal_has_color)
+			{
+				if (level < WEBCC_WARN)
+				{
+					fprintf(stderr, "%s%s, %s, %7s, %25s, %4d, ",
+						TERM_RESET,
+						timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
+						file, line);
+				}
+				else
+				{
+					fprintf(stderr, "%s%s%s, %s, %7s, %25s, %4d, ",
+						TERM_RESET,
+						level == WEBCC_WARN ? TERM_YELLOW : TERM_RED,
+						timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
+						file, line);
+				}
 
-      vfprintf(stderr, format, args);
+				vfprintf(stderr, format, args);
 
-      fprintf(stderr, "\n");
-    }
+				fprintf(stderr, "%s\n", TERM_RESET);
+			}
+			else
+			{
+				fprintf(stderr, "%s, %s, %7s, %25s, %4d, ",
+					timestamp.c_str(), kLevelNames[level], thread_id.c_str(),
+					file, line);
 
-    if ((g_logger.modes & LOG_FLUSH) != 0) {
-      fflush(stderr);
-    }
+				vfprintf(stderr, format, args);
 
-    va_end(args);
-  }
-}
+				fprintf(stderr, "\n");
+			}
+
+			if ((g_logger.modes & LOG_FLUSH) != 0)
+			{
+				fflush(stderr);
+			}
+
+			va_end(args);
+		}
+	}
 
 }  // namespace webcc
 
diff --git a/webcc/logger.h b/webcc/logger.h
index d236144..450a0a0 100644
--- a/webcc/logger.h
+++ b/webcc/logger.h
@@ -28,25 +28,29 @@
 
 #define WEBCC_LOG_FILE_NAME "webcc.log"
 
-namespace webcc {
+namespace webcc
+{
 
-enum LogMode {
-  LOG_FILE        = 1,  // Log to file.
-  LOG_CONSOLE     = 2,  // Log to console.
-  LOG_FLUSH       = 4,  // Flush on each log.
-  LOG_OVERWRITE   = 8,  // Overwrite any existing log file.
-};
+	enum LogMode
+	{
+		LOG_FILE = 1,  // Log to file.
+		LOG_CONSOLE = 2,  // Log to console.
+		LOG_FLUSH = 4,  // Flush on each log.
+		LOG_OVERWRITE = 8,  // Overwrite any existing log file.
+	};
 
-// Commonly used modes.
-const int LOG_CONSOLE_FILE_APPEND = LOG_CONSOLE | LOG_FILE;
-const int LOG_CONSOLE_FILE_OVERWRITE = LOG_CONSOLE | LOG_FILE | LOG_OVERWRITE;
-const int LOG_FILE_OVERWRITE = LOG_FILE | LOG_OVERWRITE;
+	// Commonly used modes.
+	const int LOG_CONSOLE_FILE_APPEND = LOG_CONSOLE | LOG_FILE;
+	const int LOG_CONSOLE_FILE_OVERWRITE = LOG_CONSOLE | LOG_FILE | LOG_OVERWRITE;
+	const int LOG_FILE_OVERWRITE = LOG_FILE | LOG_OVERWRITE;
 
-// Initialize logger.
-// If |dir| is empty, log file will be generated in current directory.
-void LogInit(const fs::path& dir, int modes);
+	// Initialize logger.
+	// If |dir| is empty, log file will be generated in current directory.
+	void LogInit(const fs::path& dir, int modes);
 
-void Log(int level, const char* file, int line, const char* format, ...);
+	void LogInit(const fs::path& dir, int modes, int log_level);
+
+	void Log(int level, const char* file, int line, const char* format, ...);
 
 }  // namespace webcc