Sending an integer array over tcp in c#

Question

This may be a stupid question, i apologise if it is. But I'm rewriting some c code into c# to use as part of a GUI, the original c programs transmit data buffers backwards and forwards to a microcontroller via:

n = write(sockfd, buf, sizeof(buf));

In the transmitter program and

n = read(sockfd, (void *)buf[idx]+numread,sizeof(buf[0])-numread);

In the receiver program. I am trying to find the c# equivalent of these functions above, but the only one i have found only takes byte data.

The server on the microcontroller runs software i didn't design, hence why i can't simply serialise or convert to byte etc (as in previous similar questions: How to send integer array over a TCP connection in c# and then decompose at the other end, or at least id rather check if theres a solution before i get into trying to edit code i didn't write.

any help greatly appreciated !

It's unclear what structure your buf data is. "Integer array" typically means a contiguous block of memory organized as integers of a certain fixed range stored in bytes with the CPU's native endianness with no padding between the integers. So, what are the particulars that you'll have to match in C#? — Tom Blodget
– Tom Blodget, Commented Sep 10, 2016 at 15:04
The lines in the server program which send and receive the data are if(send(sock_client, rxbuf, sizeof(rxbuf), MSG_NOSIGNAL) < 0) break; if(recv(sock_client, txbuf, sizeof(txbuf), MSG_WAITALL) <= 0) break; I think at least, its a very complicated program which i don't particularly understand. Both rxbuf and txbuf are declared as uint32_t arrays. Im not sure in this sense what send and recv actually do to the data, do they convert it to bytes and send it ? If so is there an easy way to convert it back on the c# end ? — user2769075
– user2769075, Commented Sep 11, 2016 at 16:05
@user2769075 why did you comment here and not interact with my answer? It solves your problem. — usr
– usr, Commented Sep 12, 2016 at 21:18
@usr Sorry, i have been trying to get it to work with Binary reader but haven't had any success so far, i don't understand how the conversions work so my data keeps coming out as garbage. I wasn't intentionally ignoring your answer, but i don't feel it has solved my issue either, i have however marked it as helpful which i should have done previously. Thank you for your help. — user2769075
– user2769075, Commented Sep 14, 2016 at 10:58

usr · Accepted Answer · 2016-09-10 13:46:41Z

0

You can use NetworkStream.Read/Write to read and write byte arrays to a socket. BinaryReader/Writer are abstractions on top of that that make it easier to write in certain formats.

answered Sep 10, 2016 at 13:46

usr

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