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suppress syscall errors in a better way

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ading2210 2024-01-06 02:20:36 -05:00
parent 6fc1751ddb
commit 961ce1c37f
2 changed files with 7 additions and 23 deletions
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8
client/build.sh
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@ -10,7 +10,7 @@ OUT_FILE="out/libcurl.js"
EXPORTED_FUNCS="_main,_perform_request"
RUNTIME_METHODS="addFunction,removeFunction,allocate,ALLOC_NORMAL"
COMPILER_OPTIONS="-o $OUT_FILE -lcurl -lssl -lcrypto -lcjson -I $INCLUDE_DIR -L $LIB_DIR"
EMSCRIPTEN_OPTIONS="-lwebsocket.js -sWEBSOCKET_URL=wss://debug.ading.dev/ws -sASYNCIFY -sALLOW_TABLE_GROWTH -sEXPORTED_FUNCTIONS=$EXPORTED_FUNCS -sEXPORTED_RUNTIME_METHODS=$RUNTIME_METHODS --preload-file $CACERT_FILE"
EMSCRIPTEN_OPTIONS="-lwebsocket.js -sWEBSOCKET_URL=wss://debug.ading.dev/ws -sSINGLE_FILE -sASYNCIFY -sALLOW_TABLE_GROWTH -sEXPORTED_FUNCTIONS=$EXPORTED_FUNCS -sEXPORTED_RUNTIME_METHODS=$RUNTIME_METHODS --preload-file $CACERT_FILE"
if [ ! -f $CACERT_FILE ]; then
wget "https://curl.se/ca/cacert.pem" -O $CACERT_FILE
@ -18,8 +18,14 @@ fi
tools/all_deps.sh
rm -rf out
mkdir -p out
COMPILE_CMD="emcc main.c $COMPILER_OPTIONS $EMSCRIPTEN_OPTIONS"
echo $COMPILE_CMD
$COMPILE_CMD
#patch the output to work around some emscripten bugs
sed -i 's/err("__syscall_getsockname " \?+ \?fd);//' $OUT_FILE
sed -i 's/function _emscripten_console_error(str) {/& if(UTF8ToString(str).endsWith("__syscall_setsockopt\\n")) return;/' $OUT_FILE
mv out/libcurl.data ./

22
client/main.js
View file

@ -79,27 +79,6 @@ function allocate_array(array) {
return allocate(array, ALLOC_NORMAL);
}
//make emscripten shut up about unsupported syscalls
function silence_errs() {
window._err = window.err;
window.err = function() {
let arg = arguments[0];
if (is_str(arg) && arg.startsWith("__syscall_getsockname")) {
return;
}
window._err(...arguments);
}
window._console_error = window.console.error;
window.console.error = function() {
let arg = arguments[0];
if (is_str(arg) && arg === "warning: unsupported syscall: __syscall_setsockopt\n") {
return;
}
window._console_error(...arguments);
}
}
//low level interface with c code
function perform_request(url, params, js_data_callback, js_end_callback, body=null) {
let params_str = JSON.stringify(params);
@ -201,7 +180,6 @@ function libcurl_fetch(url, params={}) {
}
async function main() {
silence_errs();
console.log(await libcurl_fetch("https://httpbin.org/anything"));
}