SSL_read failing with SSL_ERROR_SYSCALL error

We have implemented tls using openssl. While downloading larger data from server getting SSL_ERROR_SYSCALL error after receiving the some data. For smaller files I am not getting this error, able to download without any error. ERR_get_error() is showing zero for larger files.

We are using linux and c++ framework. How to find reason for the failure? What could be the reason for failure? kindly provide your suggestions.

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