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// Copyright 2018 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.
#include <string.h>
#include <stdio.h>
#include <math.h>
#include <assert.h>
#include <emscripten/fetch.h>
int result = 1;
int main() {
static const char* const headers[] = {
"X-Emscripten-Test",
"1",
0,
};
const size_t n_values = sizeof(headers) / sizeof(headers[0]) - 1;
emscripten_fetch_attr_t attr;
emscripten_fetch_attr_init(&attr);
strcpy(attr.requestMethod, "GET");
attr.attributes = EMSCRIPTEN_FETCH_REPLACE | EMSCRIPTEN_FETCH_LOAD_TO_MEMORY | EMSCRIPTEN_FETCH_SYNCHRONOUS;
attr.requestHeaders = headers;
attr.onsuccess = [] (emscripten_fetch_t *fetch) {
assert(fetch->__attributes.requestHeaders != 0);
assert(fetch->__attributes.requestHeaders != headers);
for (size_t i = 0; i < n_values; ++i) {
const char* origHeader = headers[i];
const char* header = fetch->__attributes.requestHeaders[i];
assert(origHeader != header);
assert(strcmp(origHeader, header) == 0);
}
assert(fetch->__attributes.requestHeaders[n_values] == 0);
printf("Finished downloading %llu bytes\n", fetch->numBytes);
// Compute rudimentary checksum of data
uint8_t checksum = 0;
for (int i = 0; i < fetch->numBytes; ++i) {
checksum ^= fetch->data[i];
}
printf("Data checksum: %02X\n", checksum);
assert(checksum == 0x08);
emscripten_fetch_close(fetch);
if (result == 1) result = 0;
};
attr.onprogress = [] (emscripten_fetch_t *fetch) {
if (fetch->totalBytes > 0) {
printf("Downloading.. %.2f%% complete.\n", (fetch->dataOffset + fetch->numBytes) * 100.0 / fetch->totalBytes);
} else {
printf("Downloading.. %lld bytes complete.\n", fetch->dataOffset + fetch->numBytes);
}
};
attr.onerror = [] (emscripten_fetch_t *fetch) {
printf("Download failed!\n");
emscripten_fetch_close(fetch);
assert(false && "Shouldn't fail!");
};
emscripten_fetch_t *fetch = emscripten_fetch(&attr, "gears.png");
if (result != 0) {
result = 2;
printf("emscripten_fetch() failed to run synchronously!\n");
}
return result;
}
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