about http Post

XIII XIII

12y1.4kVisual Basic .NET

why when i try to send http post , my Project for a few sec send not responding

my code

string ResP = "";

System.Net.WebRequest req = System.Net.WebRequest.Create(URI);

req.ContentType = "application/x-www-form-urlencoded";

req.Method = "POST";

byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);

req.ContentLength = bytes.Length;

System.IO.Stream os = req.GetRequestStream();

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

os.Close();

System.Net.WebResponse resp = req.GetResponse();

System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());

ResP = sr.ReadToEnd().Trim();

7 Replies

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Ashutosh Pathak12y ago
Accepted answer
Hi,

Below is the solution where i used thread to resolve the problem try and see if it helps:

public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
SendPostRequest.OnPostRequestComplete += new EventHandler(HttpRequest_OnPostRequestComplete);

for (int i = 1; i < 7; i++)
{
Thread reqThread = new Thread(new ParameterizedThreadStart(SendPostRequest.FireRequest));

reqThread.Start(i);
}

}

static string[] responseResult = new string[6];

private static void HttpRequest_OnPostRequestComplete(object sender, WebRequestCompletEventArgs e)
{
responseResult[e.Index-1] = e.ResponseText;
}

}

public static class SendPostRequest
{
public static void FireRequest(object i)
{
HttpRequest(Convert.ToInt32(i));
}

public static event EventHandler OnPostRequestComplete;
private static void HttpRequest(int i)
{
string result = HttpPost();
if (OnPostRequestComplete != null)
{
WebRequestCompletEventArgs eventArgs = new WebRequestCompletEventArgs(result, i);
OnPostRequestComplete(i, eventArgs);
}
}

private static string HttpPost()
{
string field1 = "abcd";
string Parameters = "field1=" + field1;
string ResP = "";
System.Net.WebRequest req = System.Net.WebRequest.Create("http://localhost:25128/WebForm1.aspx");
req.ContentType = "application/x-www-form-urlencoded";
req.Method = "POST";
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);
req.ContentLength = bytes.Length;
System.IO.Stream os = req.GetRequestStream();
os.Write(bytes, 0, bytes.Length);
os.Close();
System.Net.WebResponse resp = req.GetResponse();
System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
ResP = sr.ReadToEnd().Trim();
resp.Close();
return ResP;
}
}

public class WebRequestCompletEventArgs : EventArgs
{
private string requestResponseText;
private int requestIndex;
public WebRequestCompletEventArgs(string reqResponseText, int reqIndex)
{
requestResponseText = reqResponseText;
requestIndex = reqIndex;
}

public string ResponseText {get{return requestResponseText;} }
public int Index {get{return requestIndex;} }

}
Ashutosh Pathak12y ago
Hi,

you can write this

private static void HttpRequest_OnPostRequestComplete(object sender, WebRequestCompletEventArgs e)
{
Text1.Text = Text1.Text + e.ResponseText;
}

but this code cannot give the guarantee of web request response order hence you have to observe in a loop that all responses are captured and all values are set in responseResult object then you can easily iterate in this array and set your text in textbox
XIII XIII12y ago
sry bro, again me : )
how i can put result in TextBox in ur code?
XIII XIII12y ago
Hi
tnx bro For answering <3

this code use too many cpu,well project send not responding, so is there another way to send multi GET or POST packet ?

private void button7_Click(object sender, EventArgs e)

{

for (int I = 1; I < 7; I++)
{
text1.Text = text1.Text + HttpPost(URI,Parameters , Proxy[I]);
}
}
//////////////////////////////////////////////////////////////////////////////////////
public static string HttpPost(string URI, string Parameters, string PROXY)
string ResP = "";
WebProxy Prxy = new WebProxy(PROXY, true) ;
System.Net.WebRequest req = System.Net.WebRequest.Create(URI);
req.Proxy = PROXY;
req.ContentType = "application/x-www-form-urlencoded";
req.Method = "POST";
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);
req.ContentLength = bytes.Length;
System.IO.Stream os = req.GetRequestStream();
os.Write(bytes, 0, bytes.Length);
os.Close();
System.Net.WebResponse resp = req.GetResponse();
System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
ResP = sr.ReadToEnd().Trim();
resp.Close();
return ResP;
}
Ashutosh Pathak12y ago
Hi,

Before return the response in HttpPost function try adding this to your code and see if it helps:

resp.Close();
XIII XIII12y ago
thnx bro, But if respons be long , project send not responding for few second, also if i set proxy , take long not responding

for e.g

private void button7_Click(object sender, EventArgs e)

{

for (int I = 1; I < 7; I++)
{
text1.Text = text1.Text + HttpPost(URI,Parameters , Proxy[I]);
}
}
//////////////////////////////////////////////////////////////////////////////////////
public static string HttpPost(string URI, string Parameters, string PROXY)
string ResP = "";
WebProxy Prxy = new WebProxy(PROXY, true) ;
System.Net.WebRequest req = System.Net.WebRequest.Create(URI);
req.Proxy = PROXY;
req.ContentType = "application/x-www-form-urlencoded";
req.Method = "POST";
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);
req.ContentLength = bytes.Length;
System.IO.Stream os = req.GetRequestStream();
os.Write(bytes, 0, bytes.Length);
os.Close();
System.Net.WebResponse resp = req.GetResponse();
System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
ResP = sr.ReadToEnd().Trim();
return ResP;
}
Ashutosh Pathak12y ago
Please share your URI and parameters because it is working fine with below code

-----------------------------------------------------------------------------------------
string field1 = "abcd";
string Parameters = "field1=" + field1;
string ResP = "";
System.Net.WebRequest req = System.Net.WebRequest.Create("http://localhost:25128/WebForm1.aspx");
req.ContentType = "application/x-www-form-urlencoded";
req.Method = "POST";
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(Parameters);
req.ContentLength = bytes.Length;
System.IO.Stream os = req.GetRequestStream();
os.Write(bytes, 0, bytes.Length);
os.Close();
System.Net.WebResponse resp = req.GetResponse();
System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream());
ResP = sr.ReadToEnd().Trim();
--------------------------------------------------------------------------------------------------

/* code for web page WebForm1.aspx*/

protected void Page_Load(object sender, EventArgs e)
{
HttpContext.Current.Response.Write("Ashutosh");
}