How to send big endian to network stream using c#

Question

I try to transfer a filedata with sockets via a sslStream. It seems that I must send the file data length before the data. The problem is that the code

Byte [] size = BitConverter.GetBytes(fileData.Length)

Returns in little endian but internet protocols are using big endian.

How I can convert this to big endian and write it to stream;

Possible duplicate of [How to get little endian data from big endian in c# using bitConverter.ToInt32 method?](http://stackoverflow.com/questions/8241060/how-to-get-little-endian-data-from-big-endian-in-c-sharp-using-bitconverter-toin) — Umut Seven, Dec 10 '15 at 12:42

Sergii Zhevzhyk · Accepted Answer · 2015-12-10T13:14:50.880

I assume that you want to send just one int value. The order of the bytes should be reversed before transmitting:

byte[] bytes = BitConverter.GetBytes(fileData.Length);
if (BitConverter.IsLittleEndian)
     Array.Reverse(bytes);

Check this MSDN page to get more information about BitConverted.

You could also convert it using HostToNetworkOrder, for example:

int reversed = IPAddress.HostToNetworkOrder(fileData.Length);
byte[] bytes = BitConverter.GetBytes(reversed);

To send these bytes use the Write method:

stream.Write(bytes, 0, bytes.Length);

How to send big endian to network stream using c#

1 Answers1