TCP Sending Unsigned Char...
Posted on
16th Feb 2014 07:03 pm by
admin
Hi...
I want to send over tcp/ip some data, i have the data in hexadecimal, and when i try to send it, i have a few problems.
I give the data as a parameter to the program... argv[1]
Example of argv[1] = "0518EF5600AD"
This is hexadecimal data (05 18 EF 56 00 AD)
The main problem for me is the Send function...
Code:
int send(
__in SOCKET s,
__in const char* buf,
__in int len,
__in int flags
);
How can i send this data if the 2 parameter in the send funcion is a CHAR... and i need to send some null strings like Hex(00)...
I would like to send this:
Code:
unsigned char info[] =
{
0x84, 0xFA, 0xEF, 0x00,
0x01, 0xEF, 0x05, 0x31,
0x01, 0x01, 0x01, 0x20,
0xF9, 0xC7, 0xDC, 0x79,
0x80, 0x99, 0xF1, 0xF2,
0xF3
};
I been trying with some like this:
Code:
string sento;
sento=HexToAscii('02 01 EF 05 31 00 01 00 20 F9 06 02 01 EF 05 33')
nBytesSent = send(Socket, sento.data(), sizeof(sento), 0);
And works, but the other side, all the hex data over 79 change... EF >> 6F... check this:
send: 02 01 EF 05 31 00 01 00 20 F9 06 02 01 EF 05 33
recv : 02 01 6F 05 31 00 01 00 20 79 06 02 01 6F 05 33
...dunno why. With C_Str si the same. I did the same code in Delphi and works perfect... but in C++ i cant. The problem is when i send !
How can i send the value of "info[]" or correct my program?
Your Answer:
Login to answer
151 
36 
Other forums
Production Order Enterprise Service to Manufacturing Exctn Sys (MES) ???
Hello Experts,
In our current landscape SAP ECC 5.0 is integrated to MES system via PI 7.
Run function every 5 mins ??
I have a function PostMessage()
How can I run it every 5 mins ??
Table control is disappearing from Screen
Hi Experts,
I have a screen with multiple table control(TC). Each table control has two c
Uploading Filetypes and placing them in seperate folders.
Hello,
first post , and asking for help im afraid. Very new to PHP, was making good progress
Working with popups and such in a class
I've recently started building my applications completely enclosed in classes. I like the fact that
About imagecopyresampled()
Hello,
I am looking to use this function to resize parts of an image to a fixed thumbnail siz
TimeZoneOffset
Hello,
Please i need your help. I have a system that users can use to punch in and out. This
Table trouble
i have been reading the forum for a few weeks and decided to join. i like the format and the advice
how to remove in php string display
My code is
$message="We're looking at developing our website.";
$body= "
php or sql?
Sorry not sure if this is a sql problem or php the following code is supposed to delete data from th
