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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