Configuration for low-level socket behavior of Membrane's HTTP client.
              This includes timeouts and local address binding for outbound connections.
              Typically used as a child of <httpClientConfig>.
              XML Example:
              <connection keepAliveTimeout="30000" timeout="10000" soTimeout="5000" localAddr="192.168.1.100"/>
              YAML (experimental):
              
connection:
                keepAliveTimeout: 30000
                timeout: 10000
                soTimeout: 5000
                localAddr: "192.168.1.100"