Target Server for secure connection throws 502 Error (Unexpected EOF)

[adevegowda]

When I use a target server for a secure connection API call, I get the following error:

502 Bad Gateway 
{ "fault": { "faultstring": "Unexpected EOF", "detail": { "errorcode": "messaging.adaptors.http.UnexpectedEOF" } } } 

The target server looks something like this:

{
  "host": "www.somehost.com",
  "isEnabled": true,
  "name": "https_target",
  "port": 443
}

Under the following scenarios the API works fine:

1. Create an API Proxy which has the target URL as "https://www.somehost.com"

2. API Proxy enabled for Non-secure connection with the target server

3. Execute curl API with URL pointing directly to the target/backend server

Can someone tell me if I am missing something in setting up the target server or anything else ?

Note: www.somehost.com is just a dummy name used to explain the problem. The actual host name is different.