Establishing multiple https connections to a host using Spring Configurations - spring

Question

I have set my ws config property as below.
connectionTimeOut=10000
readTimeOut=10000
maxConnectionsPerHost=5
maxTotalConnections=20
userName=XXXX
password=XXX
endpoint=https://example.com/XXX.svc
I had my ws context as below:
<property name="messageSender">
<bean class="org.springframework.ws.transport.http.HttpComponentsMessageSender">
<property name="connectionTimeout" value="${connectionTimeOut}" />
<property name="readTimeout" value="${readTimeOut}"></property>
<property name="maxConnectionsPerHost"><map><entry key="${endpoint}" value="${maxConnectionsPerHost}"/></map></property>
<property name="maxTotalConnections" value="${maxTotalConnections}"/>
<property name = "credentials">
<bean class = "org.apache.http.auth.UsernamePasswordCredentials">
<constructor-arg value = "${userName}"/>
<constructor-arg value = "${password}"/>
</bean>
</property>
</bean>``
</property>
When I enter the netstat command as below
netstat -n | grep <ip of XXX.com>
I need to get 5 TCP connections as ESTABLISHED.
For my above configurations I am always getting only 2 TCP connections as ESTABLISHED.
When I tried updating my endpoint as http instead https.I could see 5 TCP connections as ESTABLISHED. However the webservice response is not retrieved and getting an WebServiceTransportException.
Can any one please help me on getting this working.
Thank you in advance.