[ENet-discuss] sending and receiving structs from eNet

[Amir Ramezani]

can i use boost::serialization?
or what do you recommend?
and, how can i send strings between client and the server?
thanks

۱۳۹۵-۰۲-۱۰ ۱۱:۲۶ −۰۷:۰۰ گرینویچ, Nathan Pritchard <npr1tchard at hotmail.com>:
> Quite a few things you need to consider, I'll cover (what I think are)
> the main two:
>
> 1) You're not sending the strings for 'username' or 'password', etc.
> You're sending pointers. Think about that, you're sending a (in the case
> of your 32-bit machine) 4-byte memory address to another client.
>
> 2) You need to read up Endianness and understand host and network byte
> ordering. Bytes ordering for numbers (ints, float, etc) are interpreted
> differently by different OSs.
>
> Consider writing a serialization/deserialization routine for handling
> these structs. If you want to be sending dynamically sized structures
> with data that needs to be interpreted, you can't just memcpy unfortunately.
>
>
> On 29/04/2016 17:52, Amir Ramezani wrote:
>> hello all,
>> i want to send struct using eNet, the structure definition is like this:
>> //the structure that represents the game data to be sent
>> typedef struct gamedata
>> {
>> const char *username;
>> const char *password;
>> int rank;
>> bool userpass_incorrect;
>> bool account_not_exist;
>> const char *mac_address;
>> const char *hdd_serial;
>> const char *ip_address;
>> int x;
>> int y;
>> int z;
>> int health;
>> bool is_banned;
>> bool notify;
>> const char *pm_user;
>> const char *chat_user;
>> const char *message;
>> const char *server_message;
>> const char *motd;
>> bool came_online;
>> bool went_offline;
>> }gamedata;
>>
>> now, when my server receive's this struct from client, it crashe's
>> size is the size of packet that had been received, and data is the
>> packet content variable
>> and gd is the structure that i want to process
>> i use memcpy to copy from data to struct:
>> memcpy(gd, data+size, sizeof(*data) +size);
>> but when i receive it, and want to process it, (dirring the
>> debugging), i just get a memory access problem
>> what am i doing wrong?
>> compiler: gcc 5.3.0
>> using gnu++14,
>> ide:code::blocks
>> debugger: gdb
>> operating system: windows7 ultimate 32 bit
>> thanks
>> _______________________________________________
>> ENet-discuss mailing list
>> ENet-discuss at cubik.org
>> http://lists.cubik.org/mailman/listinfo/enet-discuss
>
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