51 lines
1.8 KiB
HTML
51 lines
1.8 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>HTTP2FileStreams test</title>
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</head>
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<input type="file" id="input"/>
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<button onclick="onFileSelected()">Загрузить</button>
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<script>
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function onFileSelected(){
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const inputElement = document.getElementById("input").files[0];
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uploadFile(inputElement, console.log);
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}
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async function uploadFile(file, onProgress) {
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const endpoint = '/api/upload';
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// Создаем TransformStream для отслеживания прогресса
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let uploadedBytes = 0;
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const progressStream = new TransformStream({
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transform(chunk, controller) {
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controller.enqueue(chunk);
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uploadedBytes += chunk.length;
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const percent = Math.round((uploadedBytes / file.size) * 100);
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onProgress(percent);
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}
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});
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try {
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// Создаем поток для чтения файла
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const fileStream = file.stream();
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// Соединяем потоки
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const streamWithProgress = fileStream.pipeThrough(progressStream);
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// Отправляем запрос
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const response = await fetch(endpoint, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/octet-stream',
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'X-File-Name': encodeURIComponent(file.name),
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},
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body: streamWithProgress,
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duplex: 'half' // Обязательно для потоковой отправки
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});
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return await response.json();
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} catch (error) {
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throw new Error(`Upload failed: ${error.message}`);
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}
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}
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</script>
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</html> |