mercuryworkshop-mirror/libcurl.js
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support post requests and json request options

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ading2210 2024-01-04 01:01:11 -05:00
parent e695b1d14a
commit 8aedbcb6b3
2 changed files with 74 additions and 13 deletions
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42
client/main.js
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@ -1,13 +1,20 @@
const cacert_path = "./out/cacert.peem";
const cacert_path = "./out/cacert.pem";
const websocket_url = `wss://${location.hostname}/ws`;
function is_str(obj) {
return typeof obj === 'string' || obj instanceof String;
}
function allocate_str(str) {
return allocate(intArrayFromString(str), ALLOC_NORMAL);
}
function allocate_array(array) {
return allocate(array, ALLOC_NORMAL);
}
//make emscripten shut up about unsupported syscalls
function silence_errs() {
let is_str = obj => typeof obj === 'string' || obj instanceof String;
function silence_errs() {
window._err = window.err;
window.err = function() {
@ -29,18 +36,25 @@ function silence_errs() {
}
//low level interface with c code
function perform_request(url, params, js_data_callback, js_end_callback) {
function perform_request(url, params, js_data_callback, js_end_callback, body=null) {
let params_str = JSON.stringify(params);
let end_callback_ptr;
let data_callback_ptr;
let url_ptr = allocate_str(url);
let params_ptr = allocate_str(params_str);
let body_ptr = null;
let body_length = 0;
if (body) { //assume body is an int8array
body_ptr = allocate_array(body);
body_length = body.length;
}
let end_callback = (error) => {
Module.removeFunction(end_callback_ptr);
Module.removeFunction(data_callback_ptr);
if (body_ptr) _free(body_ptr);
_free(url_ptr);
_free(params_ptr);
if (error) console.error("request failed with error code "+error);
js_end_callback(error);
@ -54,7 +68,8 @@ function perform_request(url, params, js_data_callback, js_end_callback) {
end_callback_ptr = Module.addFunction(end_callback, "vi");
data_callback_ptr = Module.addFunction(data_callback, "vii");
_perform_request(url_ptr, params_ptr, data_callback_ptr, end_callback_ptr);
_perform_request(url_ptr, params_ptr, data_callback_ptr, end_callback_ptr, body_ptr, body_length);
_free(params_ptr);
}
function merge_arrays(arrays) {
@ -69,6 +84,17 @@ function merge_arrays(arrays) {
}
function libcurl_fetch(url, params={}) {
let body = null;
if (params.body) {
if (is_str(params.body)) {
body = new TextEncoder().encode(params.body);
}
else {
body = Uint8Array.from(params);
}
params.body = true;
}
return new Promise((resolve, reject) => {
let chunks = [];
let data_callback = (new_data) => {
@ -79,13 +105,13 @@ function libcurl_fetch(url, params={}) {
let response_str = new TextDecoder().decode(response_data);
resolve(response_str);
}
perform_request(url, params, data_callback, finish_callback);
perform_request(url, params, data_callback, finish_callback, body);
})
}
async function main() {
silence_errs();
console.log(await libcurl_fetch("https://ifconfig.me/all"));
console.log(await libcurl_fetch("https://httpbin.org/anything"));
}
window.onload = () => {