79     unsigned char buf[2048];  in main()  local
158     memset( buf, 0, sizeof( buf ) );  in main()
160     if( ( ret = mbedtls_net_recv( &server_fd, buf, 2 ) ) != 2 )  in main()
166     n = buflen = ( buf[0] << 8 ) | buf[1];  in main()
167     if( buflen < 1 || buflen > sizeof( buf ) )  in main()
176     memset( buf, 0, sizeof( buf ) );  in main()
178     if( ( ret = mbedtls_net_recv( &server_fd, buf, n ) ) != (int) n )  in main()
184     p = buf, end = buf + buflen;  in main()
215     mbedtls_sha1( buf, (int)( p - 2 - buf ), hash );  in main()
231     if( ( ret = mbedtls_dhm_make_public( &dhm, (int) dhm.len, buf, n,  in main()
238     if( ( ret = mbedtls_net_send( &server_fd, buf, n ) ) != (int) n )  in main()
250     if( ( ret = mbedtls_dhm_calc_secret( &dhm, buf, sizeof( buf ), &n,  in main()
258         mbedtls_printf( "%02x", buf[n] );  in main()
271     mbedtls_aes_setkey_dec( &aes, buf, 256 );  in main()
273     memset( buf, 0, sizeof( buf ) );  in main()
275     if( ( ret = mbedtls_net_recv( &server_fd, buf, 16 ) ) != 16 )  in main()
281     mbedtls_aes_crypt_ecb( &aes, MBEDTLS_AES_DECRYPT, buf, buf );  in main()
282     buf[16] = '\0';  in main()
283     mbedtls_printf( "\n  . Plaintext is \"%s\"\n\n", (char *) buf );  in main()