azure - Sending 1000 brokered messages to the service bus using the SendBatchAsync method -

i have application wherein data fetched sql db , sent service bus brokered message. these steps:

1. data fetched db(in batches of 1000)
2. each row of data converted brokered message , added list.
3. the list of 1000 brokered messages sent service bus using sendbatchasync method.

it @ 3rd step facing issue. code that:

public async task sendmessagesasync(list<brokeredmessage> brokeredmessagelist)         {             try             {                 var topicclient = createtopicclient();                 await topicclient.sendbatchasync(brokeredmessagelist);             }             catch(exception ex)             {                 throw ex;             }         } 

when compiler comes sendbatchasync method, gives error error during communication service bus. check connection information, retry. inner exception being:

internal server error: server did not provide meaningful reply; might caused premature session shutdown. trackingid:some guid here 

however if try sending 100 messages, works fine. can make send 1000 messages @ time?

note: each message size 1445 bytes

unfortunately can't because total payload size 1.4 mb (1445 bytes * 1000) whereas maximum size of batch allowed 256 kb.

ref: https://msdn.microsoft.com/en-us/library/microsoft.servicebus.messaging.topicclient.sendbatch.aspx (remarks section)

the maximum size of batch same maximum size of single message (currently 256 kb).

i guess need split batch further smaller batches don't exceed 256k limit.