* [ios] return "unknown status" in stream module.
* [ios] return "unknown status" in stream module.

zhangquan/weex,Tancy/weex,MrRaindrop/weex,Hanks10100/weex,cxfeng1/incubator-weex,kfeagle/weex,lvscar/weex,alibaba/weex,acton393/weex,HomHomLin/weex,yuguitao/incubator-weex,acton393/incubator-weex,KalicyZhou/incubator-weex,misakuo/incubator-weex,miomin/incubator-weex,lvscar/weex,miomin/incubator-weex,dianwodaMobile/DWeex,weexteam/incubator-weex,namedlock/weex,xiayun200825/weex,misakuo/incubator-weex,Hanks10100/weex,namedlock/weex,LeeJay0226/weex,acton393/weex,cxfeng1/incubator-weex,acton393/incubator-weex,bigconvience/weex,acton393/incubator-weex,Neeeo/incubator-weex,MrRaindrop/weex,boboning/weex,misakuo/incubator-weex,xiayun200825/weex,acton393/weex,cxfeng1/weex,MrRaindrop/incubator-weex,bigconvience/weex,zzyhappyzzy/weex,LeeJay0226/weex,yuguitao/incubator-weex,alibaba/weex,kfeagle/weex,erha19/incubator-weex,erha19/incubator-weex,acton393/incubator-weex,LeeJay0226/weex,namedlock/weex,leoward/incubator-weex,Tancy/weex,zzyhappyzzy/weex,dianwodaMobile/DWeex,dianwodaMobile/DWeex,miomin/incubator-weex,cxfeng1/weex,zhangquan/weex,alibaba/weex,dianwodaMobile/DWeex,Hanks10100/incubator-weex,Hanks10100/incubator-weex,Neeeo/incubator-weex,leoward/incubator-weex,MrRaindrop/incubator-weex,boboning/weex,Neeeo/incubator-weex,weexteam/incubator-weex,MrRaindrop/weex,namedlock/weex,Hanks10100/weex,KalicyZhou/incubator-weex,Tancy/weex,acton393/weex,Tancy/weex,KalicyZhou/incubator-weex,Hanks10100/weex,xiayun200825/weex,yuguitao/incubator-weex,misakuo/incubator-weex,lvscar/weex,weexteam/incubator-weex,zzyhappyzzy/weex,kfeagle/weex,boboning/weex,acton393/incubator-weex,acton393/incubator-weex,KalicyZhou/incubator-weex,alibaba/weex,zhangquan/weex,Hanks10100/weex,Tancy/weex,cxfeng1/weex,Hanks10100/incubator-weex,bigconvience/weex,zzyhappyzzy/weex,xiayun200825/weex,xiayun200825/weex,cxfeng1/incubator-weex,zzyhappyzzy/weex,boboning/weex,miomin/incubator-weex,weexteam/incubator-weex,LeeJay0226/weex,cxfeng1/incubator-weex,Hanks10100/incubator-weex,weexteam/incubator-weex,alibaba/weex,yuguitao/incubator-weex,erha19/incubator-weex,HomHomLin/weex,bigconvience/weex,miomin/incubator-weex,zhangquan/weex,MrRaindrop/weex,Hanks10100/incubator-weex,erha19/incubator-weex,KalicyZhou/incubator-weex,KalicyZhou/incubator-weex,MrRaindrop/incubator-weex,lvscar/weex,leoward/incubator-weex,erha19/incubator-weex,zhangquan/weex,MrRaindrop/weex,erha19/incubator-weex,MrRaindrop/incubator-weex,lvscar/weex,HomHomLin/weex,miomin/incubator-weex,erha19/incubator-weex,leoward/incubator-weex,cxfeng1/incubator-weex,yuguitao/incubator-weex,Tancy/weex,acton393/incubator-weex,MrRaindrop/weex,alibaba/weex,namedlock/weex,miomin/incubator-weex,zzyhappyzzy/weex,leoward/incubator-weex,cxfeng1/incubator-weex,MrRaindrop/incubator-weex,bigconvience/weex,kfeagle/weex,HomHomLin/weex,Hanks10100/incubator-weex,xiayun200825/weex,cxfeng1/weex,dianwodaMobile/DWeex,alibaba/weex,dianwodaMobile/DWeex,acton393/incubator-weex,Neeeo/incubator-weex,boboning/weex,HomHomLin/weex,zhangquan/weex,acton393/weex,erha19/incubator-weex,yuguitao/incubator-weex,namedlock/weex,kfeagle/weex,Hanks10100/weex,boboning/weex,lvscar/weex,Neeeo/incubator-weex,miomin/incubator-weex,misakuo/incubator-weex,LeeJay0226/weex,bigconvience/weex,kfeagle/weex,Neeeo/incubator-weex,MrRaindrop/incubator-weex,Hanks10100/incubator-weex,weexteam/incubator-weex,HomHomLin/weex,Hanks10100/incubator-weex,acton393/weex,cxfeng1/weex,misakuo/incubator-weex,leoward/incubator-weex,LeeJay0226/weex,cxfeng1/weex