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Forum Discussion
upload API only works for very small files
Hello,
I try this command from my raspberry pi 2 with raspbian buster:
curl -v -X POST https://content.dropboxapi.com/2/files/upload --header "Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx...
ags65 We looked into this, and it seems like you may be running in to this issue:
https://www.raspberrypi.org/forums/viewtopic.php?t=223026
As noted there, you can try:
To stop sending DFs, you can change net.ipv4.ip_no_pmtu_disc value to 1 in sysctl.
I would also try reducing the MTU on the interface in order to advertise a smaller MSS to the TCP peer.
That what I can see is you had send 4 bytes less than Dropbox expects and the confirmations given are for packets that the server doesn't signal for... Bug in the software!
I've compiled in the raspberry pi the same version of cURL that works in my ubuntu (7.65.3) and the problem remains:
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-CHACHA20-POLY1305
* ALPN, server accepted to use http/1.1
* Server certificate:
* subject: C=US; ST=California; L=San Francisco; O=Dropbox, Inc; CN=content.dropboxapi.com
* start date: Jan 29 00:00:00 2020 GMT
* expire date: Mar 2 12:00:00 2022 GMT
* subjectAltName: host "content.dropboxapi.com" matched cert's "content.dropboxapi.com"
* issuer: C=US; O=DigiCert Inc; OU=www.digicert.com; CN=DigiCert SHA2 High Assurance Server CA
* SSL certificate verify ok.
> POST /2/files/upload HTTP/1.1
> Host: content.dropboxapi.com
> User-Agent: curl/7.65.3
> Accept: */*
> Authorization: Bearer xxxxxxxxxxx
> Dropbox-API-Arg: {"path": "/Cromosoma.cc","mode": "add","autorename": true,"mute": false,"strict_conflict": false}
> Content-Type: application/octet-stream
> Content-Length: 2863
> Expect: 100-continue
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 100 Continue
* We are completely uploaded and fine
* Empty reply from server
* Connection #0 to host content.dropboxapi.com left intact
curl: (52) Empty reply from server
Hmm... You can try another diagnose way. Check if the transaction completes successfully using something like:
curl -v -X POST https://httpbin.org/post -H "Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" -H "Dropbox-API-Arg: {\"path\": \"/Cromosoma.cc\",\"mode\": \"add\",\"autorename\": true,\"mute\": false,\"strict_conflict\": false}" -H "Content-Type: application/octet-stream" -H "Expect:" --data-binary @/home/pi/Dropbox-Uploader/Cromosoma.ccThe response would show what actually got send. Evaluate it.
Let's hope result will drive you to the right conclusion.
interesting...
the cURL command works in httpbin.org and the data seems to be OK:
Note: Unnecessary use of -X or --request, POST is already inferred.
* Trying 34.230.193.231:443...
* TCP_NODELAY set
* Connected to httpbin.org (34.230.193.231) port 443 (#0)
* ALPN, offering http/1.1
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: none
* TLSv1.3 (OUT), TLS handshake, Client hello (1):
* TLSv1.3 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256
* ALPN, server accepted to use http/1.1
* Server certificate:
* subject: CN=httpbin.org
* start date: Jan 18 00:00:00 2020 GMT
* expire date: Feb 18 12:00:00 2021 GMT
* subjectAltName: host "httpbin.org" matched cert's "httpbin.org"
* issuer: C=US; O=Amazon; OU=Server CA 1B; CN=Amazon
* SSL certificate verify ok.
> POST /post HTTP/1.1
> Host: httpbin.org
> User-Agent: curl/7.65.3
> Accept: */*
> Authorization: Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Dropbox-API-Arg: {"path": "/Cromosoma.cc","mode": "add","autorename": true,"mute": false,"strict_conflict": false}
> Content-Type: application/octet-stream
> Content-Length: 2863
>
* upload completely sent off: 2863 out of 2863 bytes
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Fri, 06 Mar 2020 16:28:55 GMT
< Content-Type: application/json
< Content-Length: 4463
< Connection: keep-alive
< Server: gunicorn/19.9.0
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Credentials: true
<
{
"args": {},
"data": "data:application/octet-stream;base64,LyoqIEBma............g==",
"files": {},
"form": {},
"headers": {
"Accept": "*/*",
"Authorization": "Bearer xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
"Content-Length": "2863",
"Content-Type": "application/octet-stream",
"Dropbox-Api-Arg": "{\"path\": \"/Cromosoma.cc\",\"mode\": \"add\",\"autorename\": true,\"mute\": false,\"strict_conflict\": false}",
"Host": "httpbin.org",
"User-Agent": "curl/7.65.3",
"X-Amzn-Trace-Id": "Root=1-5e627a47-49885dec98b9e392fb837b9a"
},
"json": null,
"origin": "83.47.100.114",
"url": "https://httpbin.org/post"
}
* Connection #0 to host httpbin.org left intactWow... If content of 'data' field match exactly to the posted file... hands up... I haven't more ideas. Isn't there something missing at the end? The content there is JSON-ASCII encoded! Decode it before compare if need (or opposite). For example, encode the file you passed using:
python3 -c "import json;import sys;f=open(sys.argv[1],'r');print(json.dumps(f.read()));f.close()" /home/pi/Dropbox-Uploader/Cromosoma.cc
And compare the result to 'data' field content above.
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