Applications Accessing Report Servers - Learning SQL Server Reporting Services 2012 - page 503

8. In the HTTP Connection Manager Editor window that gets displayed,

type in the details shown in the following screenshot:

Default values were accepted for the others. The Time-out is connecting to
the Web server, the default is supposed to be 30 sec (but it came out as 60 sec)
and the Chunk size is writing a file and is 1 KB. Depending on the data to be
written to the filesystem and the accessibility of the Report Server, one has to
play with these numbers.