Here's my code for Request and Response.
System.IO.MemoryStream xmlStream = null;
HttpWebRequest HttpReq = (HttpWebRequest)WebRequest.Create(url);
xmlStream = new System.IO.MemoryStream(System.Text.Encoding.UTF8.GetBytes(format));
byte[] buf2 = xmlStream.ToArray();
System.Text.UTF8Encoding UTF8Enc = new System.Text.UTF8Encoding();
string s = UTF8Enc.GetString(buf2);
string sPost = "XMLData=" + System.Web.HttpUtility.UrlDecode(s);
byte[] bPostData = UTF8Enc.GetBytes(sPost);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url);
request.ContentType = "application/x-www-form-urlencoded";
HttpReq.Timeout = 30000;
request.Method = "POST";
request.KeepAlive = true;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(bPostData, 0, bPostData.Length);
requestStream.Close();
}
string responseString = "";
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
using (StreamReader sr = new StreamReader(response.GetResponseStream()))
{
responseString = sr.ReadToEnd();
}
No part of this code crashes. The "format" string is the one with XML in it. By the end when you try to see what's in the responseString, it's an empty string. I am supposed to see the XML sent back to me from the URL. Is there something missing in this code?
I would recommend a simplification of this messy code:
using (var client = new WebClient())
{
var values = new NameValueCollection
{
{ "XMLData", format }
};
byte[] resultBuffer = client.UploadValues(url, values);
string result = Encoding.UTF8.GetString(resultBuffer);
}
and if you wanted to upload the XML directly in the POST body you shouldn't be using application/x-www-form-urlencoded as content type. You probably should specify the correct content type, like this:
using (var client = new WebClient())
{
client.Headers[HttpRequestHeader.ContentType] = "text/xml";
var data = Encoding.UTF8.GetBytes(format);
byte[] resultBuffer = client.UploadData(url, data);
string result = Encoding.UTF8.GetString(resultBuffer);
}
Related
We are trying to write special char in post method but we are getting exception below
can not close the stream until all bytes are written
Below is the example code I am using and below are the special char which I am trying to write
internal static T InvokePostService<T>(string serviceUri, string _data)
{
T _returnResponse = default(T);
HttpWebRequest req = null;
HttpWebResponse res = null;
try
{
string url = serviceUri;
req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentType = "application/json; charset=utf-8";
req.Timeout = 600000;
req.Headers.Add("SOAPAction", url);
req.ContentLength = _data.Length;
var sw = new StreamWriter(req.GetRequestStream());
sw.Write(_data);
sw.Close();
res = (HttpWebResponse)req.GetResponse();
Stream responseStream = res.GetResponseStream();
var streamReader = new StreamReader(responseStream);
string responseString = streamReader.ReadToEnd();
_returnResponse = JsonConvert.DeserializeObject<T>(responseString);
}
Chars to write : •
This is my code for send post query to the server:
public static HttpWebResponse PostMethod(string postedData, string postUrl)
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(postUrl);
request.Method = "POST";
request.Credentials = CredentialCache.DefaultCredentials;
UTF8Encoding encoding = new UTF8Encoding();
var bytes = encoding.GetBytes(postedData);
//request.ContentType = "application/javascript";
request.ContentType = "application/x-www-form-urlencoded";
//request.ContentType = "application/json; charset=utf-8";
//request.ContentType = "application/json";
//request.ContentType = "application/x-www-form-urlencoded; charset=UTF-8";
request.ContentLength = bytes.Length;
using (var newStream = request.GetRequestStream())
{
newStream.Write(bytes, 0, bytes.Length);
newStream.Close();
}
return (HttpWebResponse)request.GetResponse();
}
And ActionResult:
[HttpPost]
public ActionResult SendMessage(FEEDBACK feedbackModel)
{
MessageData msgData = new MessageData();
msgData.to = "zicise#mail.ru";
msgData.from = feedbackModel.sEmail;
msgData.title = "Сообщение с сайта наркома от пользователя: " + feedbackModel.vFIO;
msgData.message = feedbackModel.vFIO;
var jsonString = JsonConvert.SerializeObject(msgData);
var response = PostMethod("to=zicise#mail.ru&from=narkom#info.by&title=Second method&message=test message", "http://projects.pushnovn.com/send_email/");
//var response = PostMethod("to:zicise#mail.ru,from:narkom#info.by,title:Second method,message:test message", "http://projects.pushnovn.com/send_email/");
//var response = PostMethod("{to:zicise#mail.ru,from:narkom#info.by,title:Second method,message:test message}", "http://projects.pushnovn.com/send_email/");
//var response = PostMethod("[{to:zicise#mail.ru,from:narkom#info.by,title:Second method,message:test message}]", "http://projects.pushnovn.com/send_email/");
//var response = PostMethod(jsonString, "http://projects.pushnovn.com/send_email/");
if (response != null)
{
var strreader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
var responseToString = strreader.ReadToEnd();
RootObject r = JsonConvert.DeserializeObject<RootObject>(responseToString);
ViewBag.RedirectMessage = r.msg;
}
return View("~/Views/Home/RedirectPage.cshtml");
}
But this code worked only when I send data in format: to=zicise#mail.ru&from=narkom#info.by&title=Second method&message=test message and he is broken when I try to cut my custom string like: "to="+value+"&from="+value+"&title="+value+"&message="+value
But I need to send data from model and get 0 answer. After that PHP script send me email with data. Anyone know, how to convert object in json format name=value&name=value
Maybe I need to change Content Type and send jsonString to the server? But if that true, what format I need to use?
You need to URL encode the data.
"to="+value+"&from="+value+"&title="+value+"&message="+value
should be changed to:
"to="+HttpUtility.UrlEncode (value)+"&from="+HttpUtility.UrlEncode(value)+"&title="+HttpUtility.UrlEncode(value)+"&message="+HttpUtility.UrlEncode (value)
I'm trying to get some data back from rest WS in C# but I'm getting this error:
You must write ContentLength bytes to the request stream before calling [Begin]GetResponse.
This is the code I'm trying to use:
var json = new JavaScriptSerializer().Serialize(order);
string jsonResponseToString = "";
HttpWebRequest request =
(HttpWebRequest)WebRequest.Create("https://myurl.com");
request.Method = "POST";
System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
Byte[] byteArray = encoding.GetBytes(json);
request.ContentLength = byteArray.Length;
request.ContentType = #"application/json";
try
{
using (var response = (HttpWebResponse)request.GetResponse())
{
Stream str = response.GetResponseStream();
var sr = new StreamReader(str, encoding);
jsonResponseToString = sr.ReadToEnd();
var result = new OrderResult();
result = new JavaScriptSerializer().Deserialize<OrderResult>(jsonResponseToString);
if (str != null)
{
str.Flush();
str.Close();
}
}
}
catch (WebException ex)
{
//
}
The error is happening on this line:
using (var response = (HttpWebResponse)request.GetResponse())
How can I solve this, am I doing something wrong?
As the error is trying to tell you, you need to write your bytes to the request before you can send it.
Call GetRequestStream() and write your bytes.
I would like to port a web browser form submittion to a httpwebrequest one.
its pretty simple:
wb.Document.GetElementsByTagName("input")[0].SetAttribute("value", "image.png");
wb.Document.GetElementsByTagName("input")[1].SetAttribute("value", ImageToBase64(p.Image));
wb.Document.GetElementsByTagName("form")[0].InvokeMember("submit");
I have tried the following, but the image file is currupted somehow...
string param = "name=image.jpg&file=" + ImageToBase64(p.Image);
post(param, "urlToPHPfileShown");
public string post(string param, string url)
{
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(url);
string postArgs = param;
req.Method = "POST";
req.CookieContainer = new CookieContainer();
req.ContentType = #"application/x-www-form-urlencoded";
byte[] buffer = System.Text.ASCIIEncoding.UTF8.GetBytes(postArgs);
req.ContentLength = buffer.Length;
req.AllowAutoRedirect = true;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(buffer, 0, buffer.Length);
reqStream.Close();
}
HttpWebResponse response = (HttpWebResponse)req.GetResponse();
using (Stream respStream = response.GetResponseStream())
{
using (StreamReader sr = new StreamReader(respStream))
{
string s = sr.ReadToEnd();
return s;
}
}
}
EDIT:
I just looked at the post with WireShark.
The one which is working seem to have lots of %2F instead of just / (slash).
So is there maybe a charset problem?
I am tring to pull categories from my store on BigCommerce via API.
When I try my credentials at API Console;
https://developer.bigcommerce.com/console
it is working fine, but I when send credentials via C# post request it does not work.
I am receiving [{"status":401,"message":"No credentials were supplied in the request."}]
My code is like;
List<PostCredential> postCredentials = new List<PostCredential>();
postCredentials.Add(new PostCredential { name = "store_url", value = ApiPath });
postCredentials.Add(new PostCredential { name = "username", value = Username });
postCredentials.Add(new PostCredential { name = "api_key", value = ApiToken });
JavaScriptSerializer serializer = new JavaScriptSerializer();
string serialize = serializer.Serialize(postCredentials);
const string requestUrl = "https://myteststore1234.mybigcommerce.com/api/v2/categories.json";
StringBuilder postData = new StringBuilder();
postData.Append(serialize);
string postRequest = PostRequest(requestUrl, postData.ToString());
public static string PostRequest(string url, string postData)
{
HttpWebRequest httpWReq = (HttpWebRequest)WebRequest.Create(url);
ASCIIEncoding encoding = new ASCIIEncoding();
byte[] data = encoding.GetBytes(postData);
httpWReq.Method = "POST";
httpWReq.ContentType = "application/x-www-form-urlencoded";
httpWReq.ContentLength = data.Length;
using (Stream stream = httpWReq.GetRequestStream())
{
stream.Write(data, 0, data.Length);
}
HttpWebResponse response = (HttpWebResponse)httpWReq.GetResponse();
Stream responseStream = response.GetResponseStream();
if (responseStream != null)
{
string responseString = new StreamReader(responseStream).ReadToEnd();
return responseString;
}
return null;
}
is there any workaround for this?
WebHeaderCollection wHeader = new WebHeaderCollection();
wHeader.Clear();
//wHeader.Add("username:test");
//wHeader.Add("password:4afe2a8a38fbd29c32e8fcd26dc51f6d9b5ab99b");
//wHeader.Add("u","test:4afe2a8a38fbd29c32e8fcd26dc51f6d9b5ab99b");
string Username = "test";
string ApiToken = "4afe2a8a38fbd29c32e8fcd26dc51f6d9b5ab99b";
string sUrl = "https://store-bwvr466.mybigcommerce.com/api/v2/brands.json"; //txtstoreurl.Text.ToString() + "/api/v2/products.json";
HttpWebRequest wRequest = (HttpWebRequest)System.Net.HttpWebRequest.Create(sUrl);
wRequest.Credentials = new NetworkCredential(Username, ApiToken);
wRequest.ContentType = "application/json"; //' I don't know what your content type is
//wRequest.Headers = wHeader;
wRequest.Method = "GET";
HttpWebResponse wResponse = (HttpWebResponse)wRequest.GetResponse();
string sResponse = "";
using (StreamReader srRead = new StreamReader(wResponse.GetResponseStream()))
{
sResponse = srRead.ReadToEnd();
MessageBox.Show(sResponse);
}
After some research I found out I need to pass parameters like this;
httpWReq.Method = "GET";
httpWReq.ContentType = "application/json";
httpWReq.ContentLength = data.Length;
httpWReq.Credentials = new NetworkCredential(Username, ApiToken);