title: Why this SSL connection ends abruptly
body: <p>I am trying to make an HTTPS POST request. The connection ends abruptly at the very beginning. I took the following capture with Wireshark. 192.168.0.33 is my client attempting to connect to the server. 192.185.47.210 is the server.</p>
  
  <pre><code>No.     Time           Source                Destination           Protocol Length Info
       51 2.476681000    192.168.0.33          192.185.47.210        TCP      62     1143→443 [SYN] Seq=0 Win=65535 Len=0 MSS=1460 SACK_PERM=1
       52 2.534541000    192.185.47.210        192.168.0.33          TCP      62     443→1143 [SYN, ACK] Seq=0 Ack=1 Win=29200 Len=0 MSS=1460 SACK_PERM=1
       53 2.534559000    192.168.0.33          192.185.47.210        TCP      54     1143→443 [ACK] Seq=1 Ack=1 Win=65535 Len=0
       54 2.534720000    192.168.0.33          192.185.47.210        TLSv1    163    Client Hello
       56 2.592332000    192.185.47.210        192.168.0.33          TCP      60     443→1143 [ACK] Seq=1 Ack=110 Win=29200 Len=0
       57 2.594550000    192.185.47.210        192.168.0.33          TLSv1    191    Server Hello, Change Cipher Spec, Encrypted Handshake Message
       58 2.596455000    192.168.0.33          192.185.47.210        TCP      54     1143→443 [FIN, ACK] Seq=110 Ack=138 Win=65398 Len=0
       60 2.654542000    192.185.47.210        192.168.0.33          TCP      60     443→1143 [FIN, ACK] Seq=138 Ack=111 Win=29200 Len=0
       61 2.654558000    192.168.0.33          192.185.47.210        TCP      54     1143→443 [ACK] Seq=111 Ack=139 Win=65398 Len=0
  </code></pre>
  
  <p>I suspect the problem is with packet 57, because upon receiving this packet, client initiates a disconnect of the TCP connection. Packet 57 looks like </p>
  
  <pre><code>Frame 57: 191 bytes on wire (1528 bits), 191 bytes captured (1528 bits) on interface 0
  Ethernet II, Src: Actionte_39:b9:de (18:1b:eb:39:b9:de), Dst: CadmusCo_f6:2b:9b (08:00:27:f6:2b:9b)
  Internet Protocol Version 4, Src: 192.185.47.210 (192.185.47.210), Dst: 192.168.0.33 (192.168.0.33)
  Transmission Control Protocol, Src Port: 443 (443), Dst Port: 1143 (1143), Seq: 1, Ack: 110, Len: 137
  Secure Sockets Layer
      TLSv1 Record Layer: Handshake Protocol: Server Hello
          Content Type: Handshake (22)
          Version: TLS 1.0 (0x0301)
          Length: 81
          Handshake Protocol: Server Hello
      TLSv1 Record Layer: Change Cipher Spec Protocol: Change Cipher Spec
          Content Type: Change Cipher Spec (20)
          Version: TLS 1.0 (0x0301)
          Length: 1
          Change Cipher Spec Message
      TLSv1 Record Layer: Handshake Protocol: Encrypted Handshake Message
          Content Type: Handshake (22)
          Version: TLS 1.0 (0x0301)
          Length: 40
          Handshake Protocol: Encrypted Handshake Message
  </code></pre>
  
  <p><strong>Other info:</strong></p>
  
  <p>The client is a C# program running on Windows XP. The call is made by the WebRequest (<a href="https://msdn.microsoft.com/en-us/library/system.net.webrequest%28v=vs.110%29.aspx" rel="nofollow">https://msdn.microsoft.com/en-us/library/system.net.webrequest%28v=vs.110%29.aspx</a>) class. The server is on shared hosting (Hostgator) with dedicated IP and an SSL certificate from COMODO.</p>
  
  <p><strong>Question</strong></p>
  
  <p>Can anyone help me understand why receiving packet 57 is causing the client to disconnect?</p>