I have a problem with sending a POST request through WebClient in C# API.
The POST request is:
POST http://aaa.com/login.php HTTP/1.1
Host: www.aaa.com
Connection: keep-alive
Content-Length: 346
Cache-Control: max-age=0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Origin: http://www.aaa.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.152 Safari/537.22
Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryK0J3zdRYpjgldAFy
Referer: http://www.turbotrafficbooster.com/
Accept-Encoding: gzip,deflate,sdch
Accept-Language: bg-BG,bg;q=0.8
Accept-Charset: windows-1251,utf-8;q=0.7,*;q=0.3
Cookie: PHPSESSID=b703525853495c9257b3f3ec579c937a
------WebKitFormBoundaryK0J3zdRYpjgldAFy
Content-Disposition: form-data; name="navaction"
login
------WebKitFormBoundaryK0J3zdRYpjgldAFy
Content-Disposition: form-data; name="UserID"
test
------WebKitFormBoundaryK0J3zdRYpjgldAFy
Content-Disposition: form-data; name="Password"
test
------WebKitFormBoundaryK0J3zdRYpjgldAFy--
I know what to do with the headers like user-agent and etc., but I have a problem with the boundaries. I don't know how to put them and where to do it..
See this answer and the examples in the linked specification here. Example:
Content-Type: multipart/form-data; boundary=AaB03x
--AaB03x
Content-Disposition: form-data; name="submit-name"
Larry
--AaB03x
WebKitFormBoundaryK0J3zdRYpjgldAFy is just a convention. It could be MyFoobaredBoundry if you want, provided that that you declare and close it off appropriately. Different browsers use different strings, so nothing on the receiving end should differentiate because of it.
However, this is probably not something you have to do yourself...
Related
in asp.net pageload method I am trying to get request data using
Request.Form["keyname"]
Request.Query
but all are empty but when I run fiddler in inspector>>raw I am getting this
POST http://localhost:50844/Success.aspx HTTP/1.1
Host: localhost:50844
Connection: keep-alive
Content-Length: 15583
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
Origin: null
Content-Type: application/x-www-form-urlencoded
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Cookie: ASP.NET_SessionId=ax0e4j1ucaghsarowzmvgoep
valuestr=abc&randomnum=99389
I need to get values of valuestr and randomnum,how can I do this
You can use the below code as per the values in your URL.
if your URl is = http://localhost:3039/test.aspx?valuestr=abc&randomnum=99389
then you can use the below code
string valuestr = Request.QueryString["valuestr"];
string randomnum= Request.QueryString["valuestr"];
Response.Write(valuestr );
Response.Write(randomnum);
do let me know in case you require any help
I need to get some public data from a link, but this is a second time I encounter a Cookie that I cannot replicate as some values in it are dynamic. How can I get this cookie before doing an actual request to get my data?
Example link:
https://www.blackrock.com/ca/individual/en/products/239832/ishares-sptsx-60-index-etf/1464253357804.ajax?tab=chart
Example headers:
Host: www.blackrock.com
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Accept: */*
X-Requested-With: XMLHttpRequest
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.115 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: https://www.blackrock.com/ca/individual/en/products/239832/ishares-sptsx-60-index-etf
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.8
Cookie: JSESSION_amer-retail01=EA5A098E120F4E3FAD2C994A64F292E4.03; ts-ca-one-locale=en_CA; FIRSTPAGE_ca_ca-one=page-class-home; blkUserType-ca-one=individual; ipe_s=0d9c807a-04cc-ae5b-e459-d89bddd2faab; ca-one-recent-funds=239832; __utmt=1; __utma=17023466.874636303.1499433731.1499433731.1499433731.1; __utmb=17023466.5.10.1499433731; __utmc=17023466; __utmz=17023466.1499433731.1.1.utmcsr=google|utmgclid=CJjax_ah99QCFZxMDQodKQ4NxQ|utmgclsrc=aw.ds|utmccn=(not%20set)|utmcmd=(not%20set)|utmctr=(not%20provided); _bizo_bzid=0688d0c2-d203-488b-b128-94c0406b5568; _bizo_cksm=B16C1965883E71EB; _bizo_np_stats=14%3D243%2C; ipe.20668.pageViewedCount=3; utag_main=v_id:015d1d3702f6001b054da00951140407300ad06b00bd0$_sn:1$_ss:0$_pn:6%3Bexp-session$_st:1499436924463$ses_id:1499433730806%3Bexp-session; s_pers=%20s_fid%3D5295C92DBD9DC781-0177F2F787EC9066%7C1562507124793%3B%20gpv%3Dca-one%257Cca%257Cfund%257Cishares%2520s%2526p%252Ftsx%252060%2520index%2520etf%257Cxiu%7C1499436924795%3B%20s_nr%3D1499435124796-New%7C1530971124796%3B%20s_pers_eVar17%3Dprospect%7C1502027124797%3B%20s_pers_prop19%3Danonymous%7C1502027124799%3B; s_sess=%20s_campaign%3Dppc%253Ablackrock_ca%253Agoogle%253Ablackrock%3B%20s_cc%3Dtrue%3B%20s_sq%3D%3B; s_vi=[CS]v1|2CAFC5818507C33B-6000011540002202[CE]
You can instantiate a CookieContainer and set it to the CookieContainer property of your HttpWebRequest. Then make an initial request and after you GetResponse the cookie container will be populated with any cookies returned.
Then reuse the CookieContainer in subsequent requests and all the previous returned cookies will be sent.
I am trying to simulate a FileUpload with Chrome Postman to my ASP.NET WebApi method . To do this I perform the following steps in Postman.
1.Open postman and choose POST method from address bar.
2.Enter valid URL.
3.Go to Body section below address bar.
4.From Body section choose Binary option.
5.Hit the "Chose Files" button to select a file to upload.
6.Choose a file
7.Ensure the "Post" option is selected
8.Hit "Send"
I then test for MultiPartContent, however when I step through my method the Request Object doesn't appear to have the info that I need . The exception below will get hit.
public List<Premium.Model.BureauModUpdate> Post() {
HttpRequestMessage request = this.Request;
if (!request.Content.IsMimeMultipartContent()) {
throw new HttpResponseException(HttpStatusCode.UnsupportedMediaType);
}
}
It doesn't appear as if any info concerning the file upload is in the request. A review of the request content yields this:
{Method: POST, RequestUri: 'http://localhost/WCAPI/Lookup/BureauModUpdate/CreateNyModUpdates', Version: 1.1, Content: System.Web.Http.WebHost.HttpControllerHandler+LazyStreamContent, Headers:
{
Cache-Control: no-cache
Connection: keep-alive
Accept: */*
Accept-Encoding: gzip
Accept-Encoding: deflate
Accept-Encoding: br
Accept-Language: en-US
Accept-Language: en; q=0.8
Host: localhost
User-Agent: Mozilla/5.0
User-Agent: (Windows NT 6.1; WOW64)
User-Agent: AppleWebKit/537.36
User-Agent: (KHTML, like Gecko)
User-Agent: Chrome/55.0.2883.87
User-Agent: Safari/537.36
Postman-Token: 23f64855-3b60-3f87-3aa1-ba7d0a841273
Origin: chrome-extension://fhbjgbiflinjbdggehcddcbncdddomop
Content-Length: 200284
Content-Type: application/x-www-form-urlencoded
}}
Is there something else I need to be doing ? If anybody has any suggestions or can point me in the right direction on this it would be greatly appreciated.
I believe your content type is incorrect. It should be multipart/form-data when uploading files.
application/x-www-form-urlencoded is used only when posting a form with no binary data.
I'm trying to establish a connection to a server that sends 401 Authentication Error for all my requests along with the normal html response. e.g.
However, I also want to read the HTML response that is sent alongwith so that I can parse that. An example header exchange captured using LiveHTTPHeaders:
Clearly, content-length is non-zero. Firefox shows it to be javascript.
https://172.31.1.251:1003/fgtauth?73e285357b2dc5cc
Request:
GET /fgtauth?73e285357b2dc5cc HTTP/1.1
Host: 172.31.1.251:1003
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Response:
HTTP/1.x 401 Unauthorized
WWW-Authenticate: Fortigate
Content-Length: 1091
Connection: Keep-Alive
Cache-Control: no-cache
Content-Type: text/html
At this point, a form opens in firefox that asks me to enter my username and password.
https://172.31.1.251:1003/
Request:
POST / HTTP/1.1
Host: 172.31.1.251:1003
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1b4) Gecko/20090423 Firefox/3.5b4 (.NET CLR 3.5.30729)
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive: 300
Connection: keep-alive
Referer: https://172.31.1.251:1003/
Content-Type: application/x-www-form-urlencoded
Content-Length: 93
magic=73e285357b2dc5cc&username=uuxx&password=xxuu&4Tredir=http%3A%2F%2Fwww.google.com%2F
Response:
HTTP/1.x 401 Unauthorized
WWW-Authenticate: Fortigate
Content-Length: 924
Connection: Keep-Alive
Cache-Control: no-cache
Content-Type: text/html
At this point I am redirected to another URL. However, the problem that I have is how to get the content of lenght 924 that is sent along with the 401 Unauthorized, because that content will help me in doing what I want to do further. But the very line:
WebResponse loginResponse = loginRequest.GetResponse();
throws an exception.
I will be grateful for any suggestions to help me get to the actual content.
Thanks.
You need to read the WebException's Response property, like this:
WebResponse loginResponse;
try {
loginResponse = loginRequest.GetResponse();
} catch(WebException ex) {
if (ex.Status == WebExceptionStatus.ProtocolError) {
loginResponse = ex.Response;
} else
throw;
}
//Do something with the response, and remember to dispose it.
HttpRequest.Saveas saves the following in a file
POST /VoicetrustAP/call.aspx HTTP/1.1
Cache-Control: max-age=3600, max-stale=0
Content-Length: 31988
Content-Type: multipart/form-data; boundary=osb_inet_multipart_boundary
Accept: */*
Expect: 100-continue
Host: 172.20.143.166
Referer: http://172.20.143.166/VoicetrustAP/call.aspx
User-Agent: AvayaVXI/2.0
--osb_inet_multipart_boundary
Content-Disposition: form-data; name="audioDataStream"; filename=20090313115600.ulaw
Content-Type: audio/x-wav
Content-Length: 31578
RIFFR{ WAVEfmt # # fact { data { ...data removed....
--osb_inet_multipart_boundary
Content-Disposition: form-data; name="callID"
00000056
--osb_inet_multipart_boundary
Content-Disposition: form-data; name="nextDialogID"
VTDC_CHECK_TD_AUDIO_DATA_ENR
--osb_inet_multipart_boundary--
But HttpRequest.Files.Count is less than zero ? Why?
Is it a bug in HttpRequest.Files?
Also I am able to access the data using formvariables. why?
I suspect although I haven't test it myself that a "less than zero" count actually means "I don't know how many files there are, I have received all of the incoming data stream yet".