Today I found out that I cannot reach our app via https from China:
curl 'https://litl-services-dev.appspot.com/'
curl: (35) Unknown SSL protocol error in connection to litl-services-
dev.appspot.com:443
Tracing the connection with wireshark, I can see that the connection
is dropped from the server as soon as my client has sent its TLS
Client Hello:
No. Time Source Destination
Protocol Info
11 1.229136 192.168.1.102 74.125.127.141
TCP 54448 > https [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=4056507
TSER=0 WS=6
12 1.499420 74.125.127.141 192.168.1.102
TCP https > 54448 [SYN, ACK] Seq=0 Ack=1 Win=5672 Len=0 MSS=1430
TSV=2922609223 TSER=4056507 WS=6
13 1.499456 192.168.1.102 74.125.127.141
TCP 54448 > https [ACK] Seq=1 Ack=1 Win=5888 Len=0 TSV=4056575
TSER=2922609223
14 1.500326 192.168.1.102 74.125.127.141
SSL Client Hello
15 1.501804 74.125.127.141 192.168.1.102
TCP https > 54448 [RST, ACK] Seq=1 Ack=1 Win=5824 Len=0
16 1.606189 74.125.127.141 192.168.1.102
TCP https > 54448 [RST, ACK] Seq=1 Ack=1 Win=46592 Len=0
17 1.610341 74.125.127.141 192.168.1.102
TCP https > 54448 [RST, ACK] Seq=1 Ack=128 Win=46720 Len=0
18 1.769116 74.125.127.141 192.168.1.102
TCP https > 54448 [RST] Seq=1 Win=0 Len=0
19 1.773200 74.125.127.141 192.168.1.102
TCP https > 54448 [RST] Seq=1 Win=0 Len=0
This works from the US or from France
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