Связь по TCP

#define MAXBUF  1000
 
struct received {
    char buffer[MAXBUF];
    short length;
};

    struct received channel1;
    int n;
 
    n = read(
            socket,
            (void *) channel1.buffer,
            sizeof channel1.buffer
        );
    channel1.length = n;

struct commands {
    short one;
    char two[5];
    unsigned long three;
};

#include <string.h>
 
...
    
    struct commands cmdlist;
 
    memcpy(&cmdlist, channel1.buffer, sizeof cmdlist);

#include <stdio.h>
 
...
 
    printf(
        "%hd"
        " "
        "%c"
        " "
        "%lu"
        "\n",
        cmdlist.one,
        *cmdlist.two,
        cmdlist.three
    );

struct x {
        short one;
        char two[5];
        unsigned long three;
    };
    
    char buffer[100] = {
        0x0A, 0x0F,
        0x0B, 0x0B, 0x0C, 0x0C, 0x0A,  0x0A,
        0x1B, 0x0B, 0x0C, 0x0F,
         
        0x0A, 0x0A, 0x0B, 0x0B, 0x0C, 0x0C,
        0x0A, 0x0A, 0x0B, 0x0B, 0x0C, 0x0C,
    };

    struct x cmdlist;
 
    memset(&cmdlist, 0, sizeof cmdlist);
    
    memcpy(&cmdlist, buffer, sizeof cmdlist);