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// Copyright 2023 The Emscripten Authors. All rights reserved.
// Emscripten is available under two separate licenses, the MIT license and the
// University of Illinois/NCSA Open Source License. Both these licenses can be
// found in the LICENSE file.
// Upload a file by POST'ing with ?file=xx in the query string and then
// attempt to download the file
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <emscripten/fetch.h>
void onError(emscripten_fetch_t *fetch) {
printf("onError: %d %s\n", fetch->status, fetch->statusText);
assert(false);
}
void onGetSuccess(emscripten_fetch_t *fetch) {
printf("onGetSuccess URL=%s status=%d numBytes=%llu\n",
fetch->url,
fetch->status,
fetch->numBytes);
assert(fetch->status == 200);
printf("data: %.*s\n", (int)fetch->numBytes, fetch->data);
assert(strncmp(fetch->data, "Hello, world!", fetch->numBytes) == 0);
exit(0);
}
void doGet() {
emscripten_fetch_attr_t attr;
emscripten_fetch_attr_init(&attr);
attr.attributes = EMSCRIPTEN_FETCH_LOAD_TO_MEMORY;
attr.onsuccess = onGetSuccess;
attr.onerror = onError;
emscripten_fetch(&attr, "newfile.txt");
}
void onPostSuccess(emscripten_fetch_t *fetch) {
printf("onPostSuccess URL=%s status=%d\n", fetch->url, fetch->status);
assert(fetch->status == 200);
// The data is now available at fetch->data[0] through fetch->data[fetch->numBytes-1];
emscripten_fetch_close(fetch); // Free data associated with the fetch.
// Now attempt to GET the POST'ed file
doGet();
}
int main() {
// Upload a file using `POST` with `?file=`
emscripten_fetch_attr_t attr;
emscripten_fetch_attr_init(&attr);
strcpy(attr.requestMethod, "POST");
attr.onsuccess = onPostSuccess;
attr.onerror = onError;
attr.requestData = "Hello, world!";
attr.requestDataSize = strlen(attr.requestData);
emscripten_fetch(&attr, "?file=newfile.txt");
// This return code should be ignored
return 99;
}
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