Multipart request (FormData) not work in iOS

with Android it’s working perfectly, i don’t understand why it’s not working in iOS (all ios version), don’t have any parameters transfer to the API server:

THE LOG REQUEST IN SERVER:

Files: "" ; group receipents: "" ; User receipients: ""

The CODE:

const localUploadAttachment = async (url, a, message) => {
    let formData = new FormData();
    let dataObj = {
        name: a.name,
        type: 'image/jpg',
        uri: a.uri
    };
    formData.append('files', dataObj); // i tested with "file" parametter but its still not work
    formData.append('groupRecipients', JSON.stringify(message.GroupRecipients));
    formData.append('userRecipients', JSON.stringify(message.UserRecipients));

    let response  = fetch(url, {
	method: "POST" ,
	timeoutInterval: 30000,
	body: {
	      formData: formData,
	},
	sslPinning: {
	      certs: ["mycert1"]
	},
	headers: {
		'content-type': 'multipart/form-data; charset=UTF-8',
		accept: 'application/json, text/plain, /',
	}
    })

    return response;
}

The LOG API REQUEST:

Please take a look and let me know if you have anything solution for that. Thanks 😃

[MaxToyberman]

@canhtran10 @castalonirenz i have just upload some files i know what was the issue :

1. remove ‘content-type’: ‘multipart/form-data; charset=UTF-8’, from headers. Setting the Content-Type header manually means it’s missing the boundary parameter. Remove that header and allow fetch to generate the full content type. It will look something like this:

2)data: response.data is not needed

i will update the docs.

your code should look like this :

     let formData = new FormData();
                  let dataObj = {
                      name: a.name,
                      type: 'image/jpg',
                      uri: a.uri
                  };
                  formData.append('file', dataObj); // i tested with "file" parametter but its still not work
                  formData.append('groupRecipients', JSON.stringify(message.GroupRecipients));
                  formData.append('userRecipients', JSON.stringify(message.UserRecipients));

                  let response  = fetch(url, {
                    method: "POST" ,
                    timeoutInterval: 30000,
                    body: {
                          formData: formData,
                    },
                    sslPinning: {
                          certs: ["mycert1"]
                    }
                      })

Please let me know if it worked for you

[castalonirenz]

Thanks, will try it tomorrow for sure.