diff --git a/scripts/build.windows.release.sh b/scripts/build.windows.release.sh
index f8bbda9..72d6b40 100644
--- a/scripts/build.windows.release.sh
+++ b/scripts/build.windows.release.sh
@@ -3,13 +3,13 @@ set -xe
 
 git clone https://github.com/curl/curl --depth=1
 cd curl
-cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_USE_LIBSSH2=OFF -DHTTP_ONLY=ON -DCMAKE_USE_SCHANNEL=ON -DBUILD_SHARED_LIBS=OFF -DBUILD_CURL_EXE=OFF -DCMAKE_INSTALL_PREFIX=$MINGW_PREFIX -G "Unix Makefiles" .
+cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_USE_LIBSSH2=OFF -DHTTP_ONLY=ON -DCMAKE_USE_SCHANNEL=ON -DBUILD_SHARED_LIBS=OFF -DBUILD_CURL_EXE=OFF -DCMAKE_INSTALL_PREFIX="$MINGW_PREFIX" -G "Unix Makefiles" .
 make install -j4
 cd ..
 
 git clone https://github.com/jbeder/yaml-cpp --depth=1
 cd yaml-cpp
-cmake -DCMAKE_BUILD_TYPE=Release -DYAML_CPP_BUILD_TESTS=OFF -DYAML_CPP_BUILD_TOOLS=OFF -DCMAKE_INSTALL_PREFIX=$MINGW_PREFIX -G "Unix Makefiles" .
+cmake -DCMAKE_BUILD_TYPE=Release -DYAML_CPP_BUILD_TESTS=OFF -DYAML_CPP_BUILD_TOOLS=OFF -DCMAKE_INSTALL_PREFIX="$MINGW_PREFIX" -G "Unix Makefiles" .
 make install -j4
 cd ..
 
@@ -23,14 +23,14 @@ gcc -c -O3 -o duktape.o duktape.c
 gcc -c -O3 -o duk_module_node.o -I. ../extras/module-node/duk_module_node.c
 ar cr libduktape.a duktape.o
 ar cr libduktape_module.a duk_module_node.o
-install -m0644 ./*.a $MINGW_PREFIX/lib
-install -m0644 ./duk*.h $MINGW_PREFIX/include
-install -m0644 ../extras/module-node/duk_module_node.h $MINGW_PREFIX/include
+install -m0644 ./*.a "$MINGW_PREFIX/lib"
+install -m0644 ./duk*.h "$MINGW_PREFIX/include"
+install -m0644 ../extras/module-node/duk_module_node.h "$MINGW_PREFIX/include"
 cd ../../../..
 
 git clone https://github.com/Tencent/rapidjson --depth=1
 cd rapidjson
-cmake -DRAPIDJSON_BUILD_DOC=OFF -DRAPIDJSON_BUILD_EXAMPLES=OFF -DRAPIDJSON_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=$MINGW_PREFIX -G "Unix Makefiles" .
+cmake -DRAPIDJSON_BUILD_DOC=OFF -DRAPIDJSON_BUILD_EXAMPLES=OFF -DRAPIDJSON_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX="$MINGW_PREFIX" -G "Unix Makefiles" .
 make install -j4
 cd ..
 
diff --git a/src/webget.cpp b/src/webget.cpp
index 3ee7047..f1b08c8 100644
--- a/src/webget.cpp
+++ b/src/webget.cpp
@@ -335,7 +335,7 @@ void flushCache()
     //guarded_mutex guard(cache_rw_lock);
     cache_rw_lock.writeLock();
     defer(cache_rw_lock.writeUnlock();)
-    operateFiles("cache", [](std::string file){ remove(("cache/" + file).data()); return 0; });
+    operateFiles("cache", [](const std::string &file){ remove(("cache/" + file).data()); return 0; });
 }
 
 int curlPost(const std::string &url, const std::string &data, const std::string &proxy, const string_array &request_headers, std::string *retData)
diff --git a/src/webserver_libevent.cpp b/src/webserver_libevent.cpp
index 6c4e6fc..fadca33 100644
--- a/src/webserver_libevent.cpp
+++ b/src/webserver_libevent.cpp
@@ -57,7 +57,7 @@ bool matchSpaceSeparatedList(const std::string& source, const std::string &targe
     return false;
 }
 
-std::string checkMIMEType(const std::string filename)
+std::string checkMIMEType(const std::string &filename)
 {
     string_size name_begin = 0, name_end = 0;
     name_begin = filename.rfind('/');
@@ -102,6 +102,7 @@ const char *request_header_blacklist[] = {"host", "accept", "accept-encoding"};
 
 static inline void buffer_cleanup(struct evbuffer *eb)
 {
+    (void)eb;
     //evbuffer_free(eb);
 #ifdef MALLOC_TRIM
     malloc_trim(0);
@@ -121,7 +122,7 @@ static inline int process_request(Request &request, Response &response, std::str
 
     for(responseRoute &x : responses)
     {
-        if(request.method == "OPTIONS" && startsWith(request.postdata, x.method) && x.path == request.url)
+        if(request.method == "OPTIONS" && matchSpaceSeparatedList(replace_all_distinct(request.postdata, ",", ""), x.method) && x.path == request.url)
         {
             return 1;
         }
@@ -160,6 +161,7 @@ static inline int process_request(Request &request, Response &response, std::str
 
 void OnReq(evhttp_request *req, void *args)
 {
+    (void)args;
     const char *req_content_type = evhttp_find_header(req->input_headers, "Content-Type"), *req_ac_method = evhttp_find_header(req->input_headers, "Access-Control-Request-Method");
     const char *uri = req->uri, *internal_flag = evhttp_find_header(req->input_headers, "SubConverter-Request");
 
@@ -193,6 +195,9 @@ void OnReq(evhttp_request *req, void *args)
         case EVHTTP_REQ_GET: request.method = "GET"; break;
         case EVHTTP_REQ_POST: request.method = "POST"; break;
         case EVHTTP_REQ_OPTIONS: request.method = "OPTIONS"; break;
+        case EVHTTP_REQ_PUT: request.method = "PUT"; break;
+        case EVHTTP_REQ_PATCH: request.method = "PATCH"; break;
+        case EVHTTP_REQ_DELETE: request.method = "DELETE"; break;
         default: break;
     }
     request.url = uri;
@@ -276,7 +281,7 @@ int start_web_server(void *argv)
         return -1;
     }
 
-    evhttp_set_allowed_methods(Server.get(), EVHTTP_REQ_GET | EVHTTP_REQ_POST | EVHTTP_REQ_OPTIONS);
+    evhttp_set_allowed_methods(Server.get(), EVHTTP_REQ_GET | EVHTTP_REQ_POST | EVHTTP_REQ_OPTIONS | EVHTTP_REQ_PUT | EVHTTP_REQ_PATCH | EVHTTP_REQ_DELETE);
     evhttp_set_gencb(Server.get(), OnReq, nullptr);
     evhttp_set_timeout(Server.get(), 30);
     if (event_dispatch() == -1)