how can a client post a binary array data to the server at C#

Question

I am trying to use the HttpWebRequest for posting a byteArray at C#. i dont want to convert the bytes to string (or to ToBase64String). i just want to send the byteArray to the server as is. let say that my data is

byte[] byteArray = { 0, 1, 5, 4, 0, 1, 55, 0, 1, 5, 4, 0, 1}

what should i define at the post parameters?

request.ContentType = "application/x-www-form-urlencoded"??? or request.ContentType = "application/octet-stream";???

I think I am missing something big....(BTW, the server is WampServer (Koana,PHP,MySQL)

Thanks!

BrokenGlass · Accepted Answer · 2011-10-23 19:17:12Z

1

An easier way to do this would be to use a WebClient:

byte[] byteArray = { 0, 1, 5, 4, 0, 1, 55, 0, 1, 5, 4, 0, 1};

using(WebClient wc = new WebClient())
{
    wc.UploadData(someURL, byteArray);
}

For binary data you usually would use application/octet-stream - but this is not required (depends on the server), i.e. the WebClient upload above does not specify a content-type header.

answered Oct 23, 2011 at 19:17

BrokenGlass

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1 Comment

oz zoaretz Over a year ago

Hi, please see my answer below.

clarkb86 · Accepted Answer · 2011-10-23 19:21:37Z

0

 byte[] byteArray = { 0, 1, 5, 4, 0, 1, 55, 0, 1, 5, 4, 0, 1}

 using (Stream requestStream = httpWebRequest.GetRequestStream()) {
     if (requestStream.CanWrite)
         requestStream.Write(byteArray, 0, postBytes.Length);
 }

answered Oct 23, 2011 at 19:21

clarkb86

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3 Comments

oz zoaretz Over a year ago

i think the issue is on the server side, for both ways i am getting that the $_POST is empty ( even though i can see the data at the fiddler - ��7��...). i am not sure where should i check... any suggestion?

clarkb86 Over a year ago

Are you including something like the following when you create your HttpWebRequest? httpRequest = (HttpWebRequest)WebRequest.Create(url); httpRequest.Method = "POST";` httpRequest.ContentType = "application/x-www-form-urlencoded";` httpRequest.Timeout = 5000;

oz zoaretz Over a year ago

sure, the request is working fine for a string with/without the Convert.ToBase64String. I can see the string (row data) at the server DB. the thing is that when i am trying to send the binary data (by application/x-www-form-urlencoded or by application/octet-stream) the php server varibale $_POST is empty. i am not sure where it's being set at the server, at the request class?

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