Question: I'm newbie with Spring Boot.

I'm trying to make a https call to a service, I have a Privake key to secure connection.

I hit: 

```
http://localhost:8081/points/12345/search

```

I tried with https:// but I get from Postman:

```
Could not get any response
There was an error connecting to https://localhost:8081/points/12345/search.

```

From the moment I wrote 

```
server.ssl.key-store=classpath:KeyStore.jks
server.ssl.key-store-password=test

```

in `application.properties`, I get the error message: 

Bad Request - This combination of host and port requires TLS

I have deleted all my code in my controller, I just let the endpoint so that I can invoke it.

```
@RestController
@SpringBootApplication
public class MainApplication {
    @RequestMapping(value = "/points/{point}/search", method = RequestMethod.GET)
    public PointsType getPoint(@PathVariable(value = "point") String point) {
        System.out.println("hi"); // Never printed
        return null;
    }
    public static void main(String[] args) {
        SpringApplication.run(MainApplication.class, args);
    }
}

```

Here is the file application.properties:

```
spring.application.name=sge
server.port=8081
server.ssl.key-store=classpath:KeyStore.jks
server.ssl.key-store-password=test
server.ssl.key-alias=homologation-staging
server.ssl.trust-store=classpath:TrustStore.jks
server.ssl.trust-store-password=test
server.ssl.client-auth=need
security.require-ssl=true
server.tomcat.remote_ip_header=x-forwarded-for
server.tomcat.protocol_header=x-forwarded-proto

```

What should I do ?

Answer: 
I used `https://` at the beginning instead of `http://`, it worked for me.
I got this message because I was using wrong certificate.

I misunderstood Client certificate and Server certificate. 

In my case, I installed my certificate on the server, for my domain, but what I needed to do instead is to use it to make the request, as a client certificate.

you can check it how to do it here.

[Client Certificate Authentication with Spring Boot](https://stackoverflow.com/questions/51177317/client-certificate-authentication-with-spring-boot)

So this message is basically saying: "Hey, your SSL request is not OK", I can't find the cert file, or your cert file is not the good one, as @SerdarAtalay says, it can also significate that you didn't use `https://` prefix, etc.

Hope it helps!