Merge remote-tracking branch 'origin/release/wap-im'

@@ -41,7 +41,34 @@ const msgTypeMap = {
 let userName = $('#js-uname').val();
 let uid = cmEntity.userId = $('#js-uid').val() || 0;
 let encryptedUid = cmEntity.encryptedUid = $('#js-eid').val() || 0;
-let userAvatar = cmEntity.userHead = $('#js-avatar').val() || socketConf.defaultUserHead;
+let userAvatar = cmEntity.userHead = socketConf.defaultUserHead;
+
+let imgSrc = $('#js-avatar').val();
+
+function checkUserAvatarValid(src, success) {
+    let imgDOM = new Image();
+
+    imgDOM.src = src;
+    imgDOM.style.display = 'none';
+
+    imgDOM.onload = function() {
+        success(src);
+
+        document.body.removeChild(this);
+    };
+
+    imgDOM.onerror = function() {
+        document.body.removeChild(this);
+    };
+
+    document.body.appendChild(imgDOM);
+}
+
+// window.checkUserAvatarValid = checkUserAvatarValid;
+
+checkUserAvatarValid(imgSrc, src => {
+    userAvatar = cmEntity.userHead = src;
+});
 
 let isAndroid = /YohoBuy-android/i.test(navigator.userAgent);