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The client connector module uses a self writte HTTP server implementation.

Regarding possible security problems, the use of a well tested library is advisable.
apache httpcore contains a very basic HTTP server implementation, which should be enough for the localhost binding use case.

The steps are as follows:
1. add maven artifact to

    <groupId>org.openecard.client.clients</groupId>
    <artifactId>client-connector</artifactId>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.2</version>
        </dependency>

2. Remove httpcore artifact from being pulled into android client

3. Rewrite code to use httpcore server facilities.
An example of a server can be found on
[[https://hc.apache.org/httpcomponents-core-ga/httpcore/examples/org/apache/http/examples/ElementalHttpServer.java]]