Function usage

lib_acl_cpp/samples/tcp_pool/client/main.cpp:41–48

};

static void usage(const char* procname)
{
	printf("usage: %s -h [help]\r\n"
		" -s server_addr\r\n"
		" -c cocurrent\r\n"
		" -n loop_count\r\n"
		" -l data_length\r\n", procname);
}

int main(int argc, char* argv[])
{