Hi All, I'm trying to understand server and client code over tcp using openssl. How does the flow work when we do SSL_write or SSL_read. SSL_write -> send buffer to kernel crypto subsystem -> take encrypted buffer and send it over network socket. Is the above understanding correct ? If its correct we have following context switch from user to kernel space and vice versa -> open ssl libary to kernel crypto subsystem -> kernel crypto subsystem to ssl library -> ssl library to network subsystem Does this mean for sending a buffer we need to three context switches from user to kernel and vice versa ? Doesn't this effect performance ? Please correct me if my understanding is wrong. Regards, valmiki
