I have got problem uploading a file to a server through POST
I build the request body by loading a html file and inserting the data:
------WebKitFormBoundaryMAsmIFCr12izlsoH
Content-Disposition: form-data; name="token"
%#
------WebKitFormBoundaryMAsmIFCr12izlsoH
Content-Disposition: form-data; name="userfile"; filename="%#"
Content-Type: AES256/encrypted
%#
------WebKitFormBoundaryMAsmIFCr12izlsoH--
Content-Disposition: form-data; name="submit"
Datei absenden
------WebKitFormBoundaryMAsmIFCr12izlsoH--
But to insert the the data fia string with format, it must be a string. So I alloc initWithData:data encoding NSASCIIStringEncoding cause the data can not be displayed in UTF8. The rest of the request is in UTF8, so afterwards if need dataUsingEncoding:NSUTF8StringEncoding. This breaks the data. There some bytes on the wrong place and so on. So I tried an other way, I spitted the html into two parts, and made a sandwich of it. html, data, html Unfortunately the request now looks like the second html is part of the file, so the file is broken again.
Do you know a better method?
Thanks in advance,
Jannes
I think trying to use stringWithFormat is fundamentally flawed. NSString is conceptually an array of Unicode data, but the data you are trying to put together may not be valid Unicode.
You'd be better off converting the various header portions to NSData instances and then concatenating those with the data you want to send.
Related
Most of the documentation in Mule regarding multipart relates to making a request and not processing an incoming request.
I'm looking to receive multiple files in an incoming request as an array and then loop through them to upload to another service (Salesforce).
Due to the use case I'm sending two properties:
data which is metadata to create a case record
files which is an array of files to be associated with the case record
My Postman request is:
This is the payload I receive in a Mule 4 application (redacted the file data itself):
----------------------------778704367722595657997650
Content-Disposition: form-data; name="data"
Content-Type: application/json
[
{
"subject": "test
}
]
----------------------------778704367722595657997650
Content-Disposition: form-data; name="files"; filename="logo.jpeg"
Content-Type: image/jpeg
jpegdata
----------------------------778704367722595657997650
Content-Disposition: form-data; name="files"; filename="icon.png"
Content-Type: image/png
pngdata
----------------------------778704367722595657997650--
I attempt to get the files with Dataweave:
payload.parts.files
But this returns only the first file 'logo.jpeg'
I've attempted to send the files as files[] but it doesn't seem to send as an array.
It seems that I should loop through the boundary instead? If so, should my request set the boundary so it's the same each time?
Or is there a different way to access the files?
Secondarily, is multipart the correct method or should I utilize application/json instead?
The use case is to send files from a contact form in another application to Salesforce.
When DataWeave parses a multi part input it outputs an object in which each key is the name of the part. Your input has two entries with the same key name. As usual in DataWeave you should use the multi valued selector to get all the values with the same key: payload.parts.*files
I'm trying to utilizing the Microsoft Graph API (https://learn.microsoft.com/en-us/graph/outlook-large-attachments?tabs=http#step-2-use-the-upload-session-to-upload-a-range-of-bytes-of-the-file) to create an upload session and send an attachment. However when I send the base64 version of bytes of the attachment (pdf) my file is corrupted and isn't compiling correctly. We also have the raw bytes - varbinary (not encoded). How can I pull a portion of the bytes from and query that in SSIS? Essentially when I did it using the base64 encoded bytes I would pull out the portion of the bytes using the substring. When I try using the varbinary and querying that in SSIS, I get no data when I store it in a byte variable. I didn't have any issues using the base64 version since it was a NVARCHAR, but it seems that isn't what the API needs.
To clarify, I am able to use the substring function on the varbinary column, however when that data gets sent back to SSIS, it is unable to store it, even in an object.
What is being sent per iteration using base64:
Content-Type: application/octet-stream
Content-Length: 1386170
Content-Range: bytes 2097152-3483321/3483322
{
JVBERi0xLjcNJeLjz9MNCj....
}
What should be sent using varbinary:
Content-Type: application/octet-stream
Content-Length: 1386170
Content-Range: bytes 2097152-3483321/3483322
{
0x4A0056004200....
}
#stream_request_body
class StreamHandler(RequestHandler):
def post(self):
self.temp_file.close()
def prepare(self):
max_buffer_size = 4 * 1024**3 # 4GB
self.request.connection.set_max_body_size(max_buffer_size)
self.temp_file = open("test.txt","w")
def data_received(self, chunk):
self.temp_file.write(chunk)
With the above code I am able to upload file but in raw data form as shown below
-----------------------------6552719992117258671800152707
Content-Disposition: form-data; name="dest"
csv
-----------------------------6552719992117258671800152707
Content-Disposition: form-data; name="carrier"
bandwidth
-----------------------------6552719992117258671800152707
Content-Disposition: form-data; name="file1"; filename="test.csv"
Content-Type: text/csv
And the content of uploaded file follows here.
How do I get the request parameters parsed from the file and separate the data of the file uploaded?
Is there any other way to upload large files(around 2 GB) in tornado
This is the multipart protocol used by HTML forms. Tornado can currently only parse this if it sees all the data at once, not in a streaming upload. There's a third-party library that should be able to handle this: https://github.com/siddhantgoel/streaming-form-data. See this issue for more: https://github.com/tornadoweb/tornado/issues/1842
If you control the client, it may be simpler to use a plain HTTP PUT instead of the HTML multipart form protocol. This doesn't require any special handling on the server side
I am using PHP services in my application i am getting the response from server i tried to parse the response string but JSON Parser returns NULL value. i am unable to parse this response string. i have goggling for this problem but no one give the exact solutions. i am using SBJson parser and NSJSONSeralization but it returns null value. i am posting my response string below please help me any one.
Response String is
([["{\"category_id\":\"1\", \"category_name\":\"BEVERAGES\", \"image_id\":\"6\"}"]])
Make sure that you parsing your json as in code below:
NSString * jsonString = #"{\"category_id\":\"1\", \"category_name\":\"BEVERAGES\", \"image_id\":\"6\"}";
NSData * jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
id jsonContainer = [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableContainers
error:nil];
This response
([["{\"category_id\":\"1\", \"category_name\":\"BEVERAGES\", \"image_id\":\"6\"}"]])
is not proper JSON. It occurs, the server "wanted" to send JSON but didn't get it right ;) -- or you failed to print out a JSON correctly.
The JSON should probably look like:
[[{"category_id":"1","category_name":"BEVERAGES","image_id":"6"}]]
or
[[{"category_id":1,"category_name":"BEVERAGES","image_id":6}]]
Note: the key/value pairs might be reordered.
Additionally, ensure you specify the correct Accept header value, e.g. "application/json" in your request (caution: was incorrect before edit).
And, check status code (should be 200 (OK)) and the MIME type of the response before you attempt to parse the response with a JSON parser. If you expect JSON, you should get a Content-Type header (see also property MIMEType of the NSURLResponse) whose value should be application/json.
Best fix would be to fix it on the server end and encoded properly.
If this is not possible use [jsonString stringByReplacingOccurrencesOfString:#"\" withString:#""];
I'm try to add binary file data directly to the request body of a POST call so I can simulate a file upload. However, I tried setting a 'before request' breakpoint and using 'insert file' but I couldn't seem to get that to work. I also tried to modify CustomRules.js to inject the file but couldn't figure out how to load binary data via JScript. Is there an easy solution here?
I'm sure this is a new feature in the year since this question was answered, but thought I'd add it anyhow:
There's a blue "[Upload file]" link in Composer now on the right side under the URL textbox. This will create a full multipart/form-data request. If you use this, you'll notice in the body you now have something that looks like this:
<#INCLUDE C:\Some\Path\my-image.jpg#>
In my case, I just wanted to POST the binary file directly with no multipart junk, so I just put the <#INCLUDE ... #> magic in the request body, and that sends the binary file as the body.
In order to send multipart/form-data, this receipe will be helped.
In upper panel (Http header), set Content-Type as below. Other values are automatically resolved.
Content-Type: multipart/form-data; boundary=-------------------------acebdf13572468
And, input Response Body at the below panel as follows.
---------------------------acebdf13572468
Content-Disposition: form-data; name="description"
the_text_is_here
---------------------------acebdf13572468
Content-Disposition: form-data; name="file"; filename="123.jpg"
Content-Type: image/jpg
<#INCLUDE *C:\Users\Me\Pictures\95111c18-e969-440c-81bf-2579f29b3564.jpg*#>
---------------------------acebdf13572468--
The import rules are,
Content-Type should have two more - signs than boundary words in body.
The last of the body should be ended with two - signs.
In Fiddler script: (in Fiddler: Rules... Customize Rules), find the OnBeforeRequest function, and add a line similar to:
if (oSession.uriContains("yourdomain"))
{
oSession.LoadRequestBodyFromFile("c:\\temp\\binarycontent.dat");
}
since version 2.0, the Request Body has an "Upload File..." link that allows you to post/upload binary data.