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Yes, I copy it with memcpy, but I must specify the size. And, if sizeof says 24bytes, I should copy 24bytes, however I need 23 bytes.
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memcpy( string, &struct, 23 )
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You say I must send a pointer to struct, mmm, if I send a pointer to data on my computer to another PC, I think it will not work.
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Obviously that would not work. I am saying to pass a pointer to the struct to your send function.
i.e.:
bytes = send( sock, (char*)&struct, 23, 0 )