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Dear Marc, Thank you for your information. For further analysis, could you please send us the headers of HTTP response in two cases, when you connect to your server via ezTCP device, and via your PC? And if possible, can we establish a remote access connection, such as via TeamViewer? By this way, we can analyze the problem in more detail. You can set up a schedule and send your credentials (ID and password) to us via email support@eztcp.com. Our working time is from 9:00 to 18:00 in UTC+9 Time zone. Thank you very much for your understanding. Best Regards, > Marc wrote: > ------------------------------------ > > Currently the certificate is not an issue since I can connect with our server via ssl. The problem I have currently is that I only receive the http headers, but not the data afterwards. > It is very strange because it always stops exactly at the end of the http header, although the server sends extra data (double checked with a client running on a pc) > > > > Sollae Systems wrote: > > ------------------------------------ > > Dear Marc, > > > > Thank you for your information. > > We are sorry for the inconvenience. > > Actually, as a client, our ezTCP product only supports receiving the certificate sent from the server if the certificate size is lower than 2KB. > > So when you connect to the server which has the SSL certificate size larger than 2KB, the connection will fail. > > > > Please feel free to contact us if you have any inquiry. > > Thank you very much for your understanding. > > Best Regards, > > > > > > > Marc wrote: > > > ------------------------------------ > > > Here is the output: > > > > > > When I connect to port 443 of www.arduino.cc I do not get a connection (which is what I also mentioned in my previous posts -> I have to disable certificate checking on the server to be able to make a connection via ssl) > > > and if I connect to port 80 I get the following output: > > > > > > HTTP/1.1 301 Moved Permanently > > > Content-Type: text/html > > > Date: Mon, 05 Mar 2018 20:11:43 GMT > > > Location: https://www.arduino.cc/asciilog.txt > > > Server: nginx/1.4.2 > > > Content-Length: 184 > > > Connection: Close > > > > > > <html> > > > <head><title>301 Moved Permanently</title></head> > > > <body bgcolor="white"> > > > <center><h1>301 Moved Permanently</h1></center> > > > <hr><center>nginx/1.4.2</center> > > > </body> > > > </html> > > > > > > NO CARRIER > > > > > > > > > Regards, > > > Marc > > > > Sollae Systems wrote: > > > > ------------------------------------ > > > > Dear Marc, > > > > > > > > Thank you for your information. > > > > For further analysis, could you please connect to a widely-known HTTPS server, send a GET request, and show us the screenshots of response message, > > > > in case you active and deactive SSL option. > > > > > > > > For example, you may connect to HTTPS server 54.235.185.199 (https://www.arduino.cc/), and send a HTTP GET request such as "GET /asciilogo.txt HTTP/1.1". > > > > > > > > Thank you very much for your understanding. > > > > Best Regards, > > > > > > > > > > > > > Anonymous wrote: > > > > > ------------------------------------ > > > > > I am using the ezTCP device as a client. > > > > > In the mean time I have changed the setting of our https server for not doing certificate sending and I am now able to create a connection with the server. > > > > > However when I send a HTTP GET request, I only receive the HTTP header, but not the requested data. When I do the same request on a PC to the same server, it is working (HTTP header + data) > > > > > > > > > > After some time when the server closes the connection, I get a "NO CARRIER" response from the module. > > > > > > > > > > If I do the same with SSL disabled and connect to the same server, it is working. > > > > > > > > > > Any idee what could be the cause of this? > > > > > > > > > > Marc > > > > > > > > > > > > > > > > Sollae Systems wrote: > > > > > > ------------------------------------ > > > > > > Dear Marc, > > > > > > > > > > > > We would like to make it more clearly about your scheme, whether you use ezTCP device as a client or server? Also, please make sure that you set the appropriate setting (IP address, port number, etc.) for your device. > > > > > > > > > > > > If your ezTCP device acts as a client and there is no problem with the device setting, for this issue, one possible reason is that in some cases, server may request a client certificate. > > > > > > If this situation occurs, ezTCP products do not support sending response to those requests. > > > > > > > > > > > > If you have any inquiry, please feel free to contact us. > > > > > > Thank you for your understanding. > > > > > > Best Regards, > > > > > > > > > > > > > > > > > > > Marc wrote: > > > > > > > ------------------------------------ > > > > > > > HI, > > > > > > > > > > > > > > I have CSE-M53N module and I am able to connect via a SSL socket as a client when I disable the CA checking on the server. > > > > > > > > > > > > > > But when I want to connect a socket to a https side (port 443) it is not succeeding. I think it has to something with the certificate checking. > > > > > > > > > > > > > > Could you tell me how I can connect with ssl to a standard https site on port 443? > > > > > > > > > > > > > > Regards, > > > > > > > Marc > > > > > > >
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