当一批中有多个PATCH请求时，为什么我的Drive API请求失败？

我正在尝试将新的父文件夹添加到大量的Google云端硬盘文件中。我正在使用批处理请求以避免发送过多的请求，但是当向批处理中添加了多个PATCH请求时，这种方法将不起作用。Google服务器正在返回502 Bad GatewayHTTP错误响应。有什么问题，或者我该如何解决？

一般的：

Remote Address:216.58.196.138:443
Request URL:https://content.googleapis.com/batch
Request Method:POST
Status Code:502 OK

响应头：

alt-svc:quic=":443"; ma=604800; v="30,29,28,27,26,25"
alternate-protocol:443:quic,p=1
content-length:1613
content-type:text/html; charset=UTF-8
date:Tue, 01 Dec 2015 06:18:36 GMT
server:GFE/2.0
status:502

请求标头：

:authority:content.googleapis.com
:method:POST
:path:/batch
:scheme:https
accept:*/*
accept-encoding:gzip, deflate
accept-language:ru,en-US;q=0.8,en;q=0.6,de;q=0.4,pt;q=0.2,uk;q=0.2,it;q=0.2
authorization:Bearer ya29.PQI-rcaU2_Pd7tq3XufXVWPfje4ioMzBLhvKOieYuFgs2MnxTyQvtJ0QDR7EiWnN5SOPlGo
content-length:2291
content-type:multipart/mixed; boundary=batch691088898561756483
dnt:1
origin:https://content.googleapis.com
referer:https://content.googleapis.com/static/proxy.html?jsh=m%3B%2F_%2Fscs%2Fapps-static%2F_%2Fjs%2Fk%3Doz.gapi.en.Dm6zFqHZO9M.O%2Fm%3D__features__%2Fam%3DAQ%2Frt%3Dj%2Fd%3D1%2Ft%3Dzcms%2Frs%3DAGLTcCPQ-9iC9Y-vGIOJ-RoQCZkFL66QXw
user-agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.86 Safari/537.36
x-chrome-uma-enabled:1
x-client-data:CKW2yQEIqbbJAQjEtskBCPCIygEI/ZXKAQi8mMoB
x-clientdetails:appVersion=5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36&platform=MacIntel&userAgent=Mozilla%2F5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36
x-goog-encode-response-if-executable:base64
x-javascript-user-agent:google-api-javascript-client/1.1.0-beta
x-origin:http://app.local
x-referer:http://app.local

请求有效负载：

--batch691088898561756483
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: <0B28tlN6SgYRacHVwdEQ5b1RtZmc>

PATCH /drive/v2/files/0B28tlN6SgYRacHVwdEQ5b1RtZmc?addParents=0B28tlN6SgYRaS2syM1VGWjllMnc
X-JavaScript-User-Agent: google-api-javascript-client/0.1
Authorization: Bearer ya29.PQI-rcaU2_Pd7tq3XufXVWPfje4ioMzBLhvKOieYuFgs2MnxTyQvtJ0QDR7EiWnN5SOPlGo
X-ClientDetails: appVersion=5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36&platform=MacIntel&userAgent=Mozilla%2F5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36

--batch691088898561756483
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: <0B28tlN6SgYRadVFRV0lRQW1kVlE>

PATCH /drive/v2/files/0B28tlN6SgYRadVFRV0lRQW1kVlE?addParents=0B28tlN6SgYRaS2syM1VGWjllMnc
X-JavaScript-User-Agent: google-api-javascript-client/0.1
Authorization: Bearer ya29.PQI-rcaU2_Pd7tq3XufXVWPfje4ioMzBLhvKOieYuFgs2MnxTyQvtJ0QDR7EiWnN5SOPlGo
X-ClientDetails: appVersion=5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36&platform=MacIntel&userAgent=Mozilla%2F5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36

--batch691088898561756483
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: <0B28tlN6SgYRaLW1qYmxrZUV2S0E>

PATCH /drive/v2/files/0B28tlN6SgYRaLW1qYmxrZUV2S0E?addParents=0B28tlN6SgYRaS2syM1VGWjllMnc
X-JavaScript-User-Agent: google-api-javascript-client/0.1
Authorization: Bearer ya29.PQI-rcaU2_Pd7tq3XufXVWPfje4ioMzBLhvKOieYuFgs2MnxTyQvtJ0QDR7EiWnN5SOPlGo
X-ClientDetails: appVersion=5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36&platform=MacIntel&userAgent=Mozilla%2F5.0%20(Macintosh%3B%20Intel%20Mac%20OS%20X%2010_10_3)%20AppleWebKit%2F537.36%20(KHTML%2C%20like%20Gecko)%20Chrome%2F46.0.2490.86%20Safari%2F537.36

--batch691088898561756483--