ct_vopt
ctx->ct_vopt |= SMBVOPT_ANONYMOUS;
ctx->ct_vopt &= ~SMBVOPT_SIGNING_REQUIRED;
ctx->ct_vopt = SMBVOPT_SIGNING_ENABLED;
ctx->ct_vopt &= ~SMBVOPT_SIGNING_MASK;
ctx->ct_vopt |= SMBVOPT_SIGNING_ENABLED;
ctx->ct_vopt |= SMBVOPT_SIGNING_REQUIRED;
if ((ctx->ct_vopt & SMBVOPT_SIGNING_ENABLED) == 0)