fetch instead of XMLHttpRequest

package.json

@@ -36,7 +36,8 @@
   },
   "dependencies": {
     "buffer": "^4.5.1",
-    "crypto-js": "^3.1.6"
+    "crypto-js": "^3.1.6",
+    "react-native-fetch-blob": "^0.10.4"
   },
   "devDependencies": {
     "babel-cli": "^6.24.0",

src/FetchRequest.js

@@ -0,0 +1,142 @@
+/**
+ * Request
+ */
+
+import RNFetchBlob from 'react-native-fetch-blob'
+
+const isBlank = string =>
+  null == string || !/\S/.test(string)
+
+const notBlank = string =>
+  !isBlank(string)
+
+const parseHeaders = (xhr) => {
+  return (xhr.getAllResponseHeaders() || '')
+    .split(/\r?\n/)
+    .filter(notBlank)
+    .reduce((headers, headerString) => {
+      let header = headerString.split(":")[0];
+      headers[header] = xhr.getResponseHeader(header);
+      return headers;
+    }, {});
+}
+
+const buildResponseObject = (xhr) => {
+  let headers = {};
+  try {
+    headers = parseHeaders(xhr)
+  } catch (e) {};
+  return {
+    status: xhr.status,
+    text: xhr.responseText,
+    headers: headers
+  };
+}
+
+const buildResponseHandler = (xhr, resolve, reject) => {
+  return () => {
+    let fn = xhr.status === 0 ? reject : resolve;
+    fn(buildResponseObject(xhr));
+  }
+}
+
+const decorateProgressFn = (fn) => {
+  return (e) => {
+    e.percent = e.loaded / e.total;
+    return fn(e);
+  }
+}
+
+export class FetchRequest {
+  static create(...args) {
+    return new this(...args);
+  }
+
+  constructor(url, method, attrs = {}, headers = {}) {
+    //this._xhr = new Request.XMLHttpRequest();
+    //this._formData = new Request.FormData();
+
+    this.url = url;
+    this.method = method;
+    this.headers = {};
+    this.formData = [];
+
+    //this._xhr.open(method, url);
+
+    // this._promise = new Promise((resolve, reject) => {
+    //   this._xhr.onload = buildResponseHandler(this._xhr, resolve, reject);
+    //   this._xhr.onerror = buildResponseHandler(this._xhr, resolve, reject);
+    // });
+
+    Object.keys(attrs).forEach((k) => this.set(k, attrs[k]));
+    Object.keys(headers).forEach((k) => this.header(k, headers[k]));
+  }
+
+  header(key, value) {
+    this.headers[key] = value;
+    //this._xhr.setRequestHeader(key, value);
+    return this;
+  }
+
+  set(key, value) {
+    let newKeyValue = {
+        name: key,
+        data: value
+    };
+
+    if (key=="file") {
+        newKeyValue.data = RNFetchBlob.wrap(value.uri);
+        newKeyValue.filename = value.name;
+    }
+
+    this.formData.push(newKeyValue);
+    // this._formData.append(key, value);
+    return this;
+  }
+
+  send() {
+
+RNFetchBlob
+    //.config({
+    //    // DCIMDir is in external storage 
+    //    path : dirs.DCIMDir + '/music.mp3'
+    //})
+    .fetch(this.method, this.url, this.headers, this.formData)
+    .then((r) => {
+        // console.log("file uploaded", r);
+        // scan file success 
+    })
+    .catch((err) => {
+        console.log("upload error", error);
+        // scan file error 
+    })
+
+    // this._xhr.send(this._formData);
+    return this;
+  }
+
+  abort() {
+    //this._xhr.abort();
+    return this;
+  }
+
+  progress(fn) {
+    //if (this._xhr.upload) {
+    //  this._xhr.upload.onprogress = decorateProgressFn(fn);
+    //}
+    return this;
+  }
+
+  then(...args) {
+    //this._promise = this._promise.then(...args);
+    return this;
+  }
+
+  catch(...args) {
+    //this._promise = this._promise.catch(...args);
+    return this;
+  }
+}
+
+// Request.FormData = FormData
+// Request.XMLHttpRequest = XMLHttpRequest

src/RNS3.js

@@ -3,6 +3,7 @@
  */
 
 import { Request } from './Request'
+import { FetchRequest } from './FetchRequest'
 import { S3Policy } from './S3Policy'
 
 const AWS_DEFAULT_S3_HOST = 's3.amazonaws.com'
@@ -30,6 +31,7 @@ const setBodyAsParsedXML = (response) =>
   })
 
 export class RNS3 {
+
   static put(file, options) {
     options = {
       ...options,
@@ -47,4 +49,21 @@ export class RNS3 {
       .send()
       .then(setBodyAsParsedXML)
   }
-}
+
+  static putWithFetch(file, options) {
+    options = {
+      ...options,
+      key: (options.keyPrefix || '') + file.name,
+      date: new Date,
+      contentType: file.type
+    }
+
+    const url = `https://${options.bucket}.${options.awsUrl || AWS_DEFAULT_S3_HOST}`
+    const method = "POST"
+    const policy = S3Policy.generate(options)
+
+    return FetchRequest.create(url, method, policy)
+      .set("file", file)
+      .send()
+      .then(setBodyAsParsedXML)
+  }}