diff --git a/client/build.sh b/client/build.sh
index be013ab..1ef82b5 100755
--- a/client/build.sh
+++ b/client/build.sh
@@ -28,7 +28,7 @@ EXPORTED_FUNCS="${EXPORTED_FUNCS:1}"
 #compile options
 RUNTIME_METHODS="addFunction,removeFunction,allocate,ALLOC_NORMAL"
 COMPILER_OPTIONS="-o $MODULE_FILE -lcurl -lssl -lcrypto -lcjson -lz -lbrotlidec -lbrotlicommon -lnghttp2 -I $INCLUDE_DIR -L $LIB_DIR"
-EMSCRIPTEN_OPTIONS="-lwebsocket.js -sASSERTIONS=1 -sLLD_REPORT_UNDEFINED -sALLOW_TABLE_GROWTH -sALLOW_MEMORY_GROWTH -sEXPORTED_FUNCTIONS=$EXPORTED_FUNCS -sEXPORTED_RUNTIME_METHODS=$RUNTIME_METHODS"
+EMSCRIPTEN_OPTIONS="-lwebsocket.js -sENVIRONMENT=worker,web -sASSERTIONS=1 -sLLD_REPORT_UNDEFINED -sALLOW_TABLE_GROWTH -sALLOW_MEMORY_GROWTH -sEXPORTED_FUNCTIONS=$EXPORTED_FUNCS -sEXPORTED_RUNTIME_METHODS=$RUNTIME_METHODS"
 
 #clean output dir
 rm -rf $OUT_DIR
diff --git a/client/javascript/main.js b/client/javascript/main.js
index f42596b..fc8b6f8 100644
--- a/client/javascript/main.js
+++ b/client/javascript/main.js
@@ -16,12 +16,8 @@ You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
-if (typeof window === "undefined") {
-  throw new Error("NodeJS is not supported. This only works inside the browser.");
-}
-
 //everything is wrapped in a function to prevent emscripten from polluting the global scope
-window.libcurl = (function() {
+const libcurl = (function() {
 
 //emscripten compiled code is inserted here
 /* __emscripten_output__ */
diff --git a/client/libcurl/main.c b/client/libcurl/main.c
index f085d7a..249cd24 100644
--- a/client/libcurl/main.c
+++ b/client/libcurl/main.c
@@ -192,6 +192,8 @@ void finish_request(CURLMsg *curl_msg) {
 void init_curl() {
   curl_global_init(CURL_GLOBAL_DEFAULT);
   multi_handle = curl_multi_init();
+  curl_multi_setopt(multi_handle, CURLMOPT_MAX_TOTAL_CONNECTIONS, 50L);
+  curl_multi_setopt(multi_handle, CURLMOPT_MAXCONNECTS, 40L);
   
   FILE* file = fopen("/cacert.pem", "wb");
   fwrite(_cacert_pem, 1, _cacert_pem_len, file);
diff --git a/client/package.json b/client/package.json
index 47caa58..d14d66f 100644
--- a/client/package.json
+++ b/client/package.json
@@ -1,6 +1,6 @@
 {
   "name": "libcurl.js",
-  "version": "0.3.3",
+  "version": "0.3.4",
   "description": "An experimental port of libcurl to WebAssembly for use in the browser.",
   "main": "libcurl.mjs",
   "scripts": {
diff --git a/server/wisp_server b/server/wisp_server
index 65d3124..3b0d432 160000
--- a/server/wisp_server
+++ b/server/wisp_server
@@ -1 +1 @@
-Subproject commit 65d312414aa896d8f9e18f48e8fe37b72d75ee5c
+Subproject commit 3b0d432e89cff7eaa850ba8605b180189e237f1b