Follow one real request

You need A terminal. No account.

1. Look up the address

   macOSLinuxWindows

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   dig d-request-demo-d7de8315.computesphere.app
   

   Two addresses means two ways in; your client picks one.

   You should seeAn answer with two A records for the name, each with its own IPv4 address and a TTL of 300 seconds or less.

2. Send the request with your code

   Your code is under Check your work at the end of this page. Put it in place of <your-code>.

   macOSLinuxWindows

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   curl -v "https://d-request-demo-d7de8315.computesphere.app/?code=<your-code>"
   

   You should seeYour request (GET and its Host header), then a status line with 200, then response headers including x-learn-nonce.

3. Read the certificate

   macOSLinuxWindows

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   openssl s_client -connect d-request-demo-d7de8315.computesphere.app:443 \
     -servername d-request-demo-d7de8315.computesphere.app </dev/null 2>/dev/null \
     | openssl x509 -noout -subject -issuer -dates
   

   Write down the issuer. A wildcard subject covers every name one level under computesphere.app.

   You should seeThe subject *.computesphere.app, an issuer line naming who signed it, and start and expiry dates about three months apart.

4. Prove you read the response

   Copy the value of x-learn-nonce from step 2, without the header name, into Check your work below and choose Check.

   You should seePassed.

curl -v "https://d-request-demo-d7de8315.computesphere.app/?code="