HttpUtils.httpConnection（）被拒绝

Question

I have used this code to send an mms and all parameters are correct, but the connection is refused.. And the netWork is connected on mobile mms.

HttpUtils is a class from a library downloaded here : https://github.com/android/platform_packages_apps_mms

HttpUtils.httpConnection(getApplicationContext(), 4444L, MMSCenterUrl, bytesToSendFromPDU, HttpUtils.HTTP_POST_METHOD, !TextUtils.isEmpty(MMSProxy), MMSProxy, port);

06-29 19:51:26.208: I/Log MMSCenterUrl(13071): http: //mmsnrj

06-29 19:51:26.208: I/Log MMSProxy(13071): 10.143.156.5

06-29 19:51:26.208: I/Log MMSPort(13071): 8080

06-29 19:51:26.288: E/Mms:transaction(13071): Url: http: //mmsnrj

06-29 19:51:26.288: E/Mms:transaction(13071): Connection to http: //10.143.156.5:8080 refused

Manifiest file :

<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.SEND_SMS"/>
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.READ_CONTACTS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.VIBRATE" />

Answer 1

Crossing out usual suspects
Uses Internet permission in manifest file
Server is actually up.Please send a post request form the browser using Post master or any such tool
10.143.156.5 ip seems its an external system. Ensure that firewalls are not making your development life miserable. (Port forwarding or open the port on the routers)