[riot-notifications] [RIOT-OS/RIOT] gnrc_sock_tcp: add gnrc sock tcp (#16494)

benpicco notifications at github.com
Tue Aug 10 10:30:08 CEST 2021

@benpicco commented on this pull request.

> +    dump_args(argc, argv);
+    sock_tcp_disconnect(sock);
+    printf("%s: returns\n", argv[0]);


No need to be so verbose ;) 

> +    dump_args(argc, argv);

    if (argc < 2) {
        printf("usage: %s <host> <port>\n", argv[0]);
        return -1;

let's be a bit more user friendly. Right now if you just call `gnrc_tcp_open` expecting to get usage information, the test will just crash on you.

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