Realm-js: Can not download realm-sync-cocoa like #1645

[jfan0888]

https://github.com/realm/realm-js/issues/1645

It seems like the pull request or any solution has not infected current version.
I can't download realm-sync-cocoa-3.5.5.tar.gz

realm: 2.8.5
react-native: 0.55.4

[kneth]

@jfan0888 Do you live in any of the countries mentioned in https://github.com/realm/realm-js/blob/master/README.md#license?

[jfan0888]

@kneth

• Currently I am located in China. It has geo restrictions? If that is true, I was succeeded in downloading it once without any process. Then, I removed the app on simulator, it hasn't been played.
• Can you help me to find solution? By the way, I can't find location list in where you mentioned.

[kneth]

@jfan0888 We are allowed to export to China 🇨🇳

Please post the error message so I can see how it goes wrong.

[jfan0888]

OK @kneth . You can notice that what I faced.

[kneth]

@jfan0888 Do you connect to internet through a proxy?

[jfan0888]

@kneth yeah

[kneth]

I am not sure how well node-fetch is supporting proxies. At least our downloader doesn't take care of it: https://github.com/realm/realm-js/blob/master/scripts/download-realm.js#L66

Can you try to manually download it: curl https://static.realm.io/downloads/sync/realm-sync-cocoa-3.3.0.tar.gz -O to verify that your network can access the file?

[jfan0888]

@kneth it didn't solve the problem.

[jfan0888]

@kneth I verified that it works properly although the Internet speed is a bit slow.

[jfan0888]

@kneth what do you think of Internet speed?
When i run the instruction you mentioned above, it is said that it will take more than 4 hours even though its size is only 135MB.

[kneth]

static.realm.io is hosted by Amazon S3 so I can't imagine that the bottleneck is at our end. 4 hours for 135 MB is less than 10 Kbit/sec so maybe you should check your internet connection.

[jfan0888]

I improved network speed 10 times than before. But I couldn't succeeded in solving the problem.

[kneth]

It sounds like an issue at your end rather than at our end.

[jfan0888]

I couldn't find solution on my end.

[kneth]

Let me suggest that you contact your internet provider to see if they can speed up the transfer.

[Arabrellaxy]

I happend to experienced this issue today.When I try to run my app from Xcode after installed realm.I got this error as below:

Resolved requirements: { SYNC_SERVER_FOLDER: 'sync', SYNC_ARCHIVE: 'realm-sync-cocoa-3.7.0.tar.gz', SYNC_ARCHIVE_ROOT: 'core' } No lockfile found at the target, proceeding. Download url: https://static.realm.io/downloads/sync/realm-sync-cocoa-3.7.0.tar.gz Extracting realm-sync-cocoa-3.7.0.tar.gz => /Users/xxx/Desktop/xxx/node_modules/realm/vendor/realm-ios { Error: unexpected end of file at Zlib.zlibOnError [as onerror] (zlib.js:142:17) errno: -5, code: 'Z_BUF_ERROR' } Command /bin/sh failed with exit code 1

I solved this issue manually based on @kneth 's answer,here are my steps:

First step:
open cmd, locate to your project directory/node_modules/realm/vendor/realm-ios,you will find it is empty😊
Second step
vim download-realm.lock,then write
SYNC_SERVER_FOLDER=sync SYNC_ARCHIVE=realm-sync-cocoa-3.7.0.tar.gz SYNC_ARCHIVE_ROOT=core into this file.
Save and exit.
Remember to change the version number to what you need.

Third step
open another cmd,locate to your downloaded file "realm-sync-cocoa-3.7.0.tar.gz"
excute this command tar -xzvf realm-sync-cocoa-3.7.0.tar.gz -C yourProjectDirectory/node_modules/realm/vendor/realm-ios

Fourth step
open the first cmd,you will find the directory is not empty any more.copy all the files under directory "core" and paste them under directory "yourProjectDirectory/node_modules/realm/vendor/realm-ios"

Finally,build and run,you will make it.

[kneth]

@Arabrellaxy Thank you for the recipe. I think we should include it in our documentation. Downloading works in most cases, but it is always good to have a plan B.

[kneth]

I believe there is a bug in download-realm.js but it is only triggered in rare cases. I have documented (will be online soon).

[martsie]

I'm not sure this recipe works every time. When using it today I'm getting:

Resolved requirements: { SYNC_SERVER_FOLDER: 'sync',

  SYNC_ARCHIVE: 'realm-sync-cocoa-3.5.1.tar.gz',

  SYNC_ARCHIVE_ROOT: 'core' }

Target directory has a differing lockfile, overwriting.

Download url: https://static.realm.io/downloads/sync/realm-sync-cocoa-3.5.1.tar.gz

Extracting realm-sync-cocoa-3.5.1.tar.gz => ******

{ Error: unexpected end of file

My lock files looks like:

SYNC_SERVER_FOLDER=sync SYNC_ARCHIVE=realm-sync-cocoa-3.5.1.tar.gz SYNC_ARCHIVE_ROOT=core

and is placed in /Users/marty/Documents/Work/01_clients/tupaia/meditrak/node_modules/realm/vendor/realm-ios along with the contents of the core folder from that sync archive.

Does this fix work with realm versions under 3.7?

[kneth]

Only the distribution of Linux binaries changed. Maybe your download speed is too low and you end up with a corrupt file?

http://osxdaily.com/2016/09/22/fix-wi-fi-problems-macos-sierra/ might be useful.

[kneth]

I have updated the documentation (as suggested above), and this issue seems to hit people with a buggy Mac.

[YaoHuiJi]

I tried @Arabrellaxy 's solution , but find that the script delete the file realm-sync-cocoa-xxx.tar.gz in tmpdir and still try to redownload it.so I check the script 'download-realm.js' and find this related code if (stat.mtime.getTime() !== lastModified.getTime()) in the download method ,since the mtime of my own downloaded file is not the SAME as the network request, so the script still run into the saveFile process, so I just comment out this code temporary to let the build pass.
if someone meet this redownload problem, maybe this comment is useful.

[yuanyinchun]

realm-sync-cocoa downloading is very slow in China, I wrote a local file server to speed up downloading. Repo and usage is here.
Hope it helps.

[alpamys-qanybet]

why don't we just download file manually and host it in localhost and make it download every time from localhost?!🤔

[WeijianXu]

why don't we just download file manually and host it in localhost and make it download every time from localhost?!🤔

Can you show more detail of your way?

[alpamys-qanybet]

@WeijianXu,

in a file node_modules/realm/scripts/download-realm.js

function download(serverFolder, archive, destination) { - const url = `https://static.realm.io/downloads/${serverFolder}/${archive}`; + let url = `https://static.realm.io/downloads/${serverFolder}/${archive}`; + + if (url === 'https://static.realm.io/downloads/sync/realm-sync-cocoa-3.15.0.tar.gz') { + url = 'http://localhost/dev/realm/realm-sync-cocoa-3.15.0.tar.gz'; + }

if you don't understand what - and + means it is git difference.

so, just download the original file and paste it in your localhost. in my case it is /var/www/dev/realm/