Blockchain Explorer

[bezzee]

Blockchain explorer is not displaying the blocks/transactions, it just shows the empty page with no values.

I've setup the pool in a subdirectory like http://xyz.com/pool And here is my front-end settings

var api = "http://xyz.com/pool:8117"; var api_blockexplorer = "http://xyz.com/pool:1118"; var poolHost = "xyz.com/pool";

And I've added this to the coin config in the pool

rpc-bind-ip=0.0.0.0 enable-blockchain-indexes=1 enable-cors=*

Please advise as to what I need to change to display the blockchain correctly.

[pmitchev]

are you able to make RPC to the daemon not from localhost?

[bezzee]

hmm I'm not sure how to check that. Could you please explain it? When I run the command from local machine and remote machine

curl 127.0.0.1:44873 -d '{"method":"getblockheaderbyheight","params":{"height":1}}' Requested url is not found

I get this error. It's the same when I tried from a different machine.

[bezzee]

My bad, I used a wrong url while testing the RPC method. With the right URL now I was able to RPC from local as well as remote machine (tested for the method getblockheaderbyheight and it returns values as expected).

Any idea what else I could check?

[servc4]

Hi I have same issue... when I run command from console where the pool is runing curl demonhost:18081/json_rpc -d '{"method":"getblockheaderby height","params":{"height":100}}'

I get answer {"jsonrpc":"2.0","result":{"block_header":{"depth":1640,"difficulty":3948,"hash":"67cde8b9a3995b83ec2deecd97f567890ea1a56d964af7f0bdd5e2b77844a605","height":99,"major_version":3,"minor_version":0,"nonce":2149190104,"orphan_status":false,"prev_hash":"e95a546eebeb47916e310e763be0fa723079bdb865dda3a6b938054e21788d33","reward":70342174034331,"timestamp":1512523086},"status":"OK"}}

then in config I set var api_blockexplorer = "demonhost:18081"; and there is no results.. Any idea why ??

[servc4]

Hi I made some changes in my source... and now answer on command curl -s -X POST 127.0.0.1:18081/json_rpc -d '{"params": {"hash" : "abb030db953218630ff656a6487e79098acc9b62b316e23c186b88ad1a9bad9a"} ,"jsonrpc":"2.0","id":"test","method":"f_block_json"}' -H 'Content-Type: application/json'

Is:

{"id":"test","jsonrpc":"2.0","result":{"block":{"alreadyGeneratedCoins":"1749749696798552973","alreadyGeneratedTransactions":29747,"baseReward":63694221767932,"blockSize":550,"depth":0,"difficulty":9609537,"effectiveSizeMedian":100000,"hash":"abb030db953218630ff656a6487e79098acc9b62b316e23c186b88ad1a9bad9a","height":26124,"major_version":3,"minor_version":0,"nonce":581693486,"orphan_status":false,"penalty":0.0,"prev_hash":"a39cc082b709231d5209ab7fd4ef51b29ed6c86ca2030a83afbc3ea9ee196971","reward":63694221767932,"sizeMedian":395,"timestamp":1517180998,"totalFeeAmount":0,"transactions":[{"amount_out":63694221767932,"fee":0,"hash":"95443f8a7fce21c57da6b1b2370f56cea0d48c2b096065908f05ddf685e93a4a","size":431}],"transactionsCumulativeSize":431},"status":"OK"}}

looks ok but explorer still not work any suggestion ??

[flarecurrency]

I got this error

(Thread 1) Error polling getblocktemplate {"code":"ECONNREFUSED","errno":"ECONNREFUSED","syscall":"connect"}

[flarecurrency]

I got the samething right now, but when I try this trough the web page its not even loading or something.

curl 127.0.0.1:38985/json_rpc -d '{"method":"getblockheaderbyheight","params":{"height":100}}'

result: {"jsonrpc":"2.0","result":{"block_header":{"depth":4711,"difficulty":4228,"hash":"0540de153be718e083038b5be10ffc173250a42a17a947339122fe01282078be","height":99,"major_version":3,"minor_version":0,"nonce":209761323,"orphan_status":false,"prev_hash":"71001a262f179dfdf70ab18c424617ce9c9e7a47ebf8c46ec070254a7dc76e2f","reward":1525302758107,"timestamp":1516014979},"status":"OK"}}

[servc4]

Hi Forknote block explorer required more commands included in RPC Deamon server. Take a look on my command and answer from deamon is much different then yours. You need to add commands from forknote to your deamon after that hopefully will work.

Regards

[flarecurrency]

Hello,

Is the blockchain working by you?

[servc4]

Hi not all info you can find on it but those are small thins what we need to resolve but is working.

regards

[flarecurrency]

Hello,

Could you share your code?

[servc4]

Hi It's not mine ;) I use this one as a block explorer https://github.com/Karbovanets/Karbowanec-Blockchain-Explorer

Good lock

[flarecurrency]

Hello,

It's not the blockexplorer what is wrong, but the code from the pool, because it send the post and I get a response and the pool code don't show the information.

[flarecurrency]

@servc4 thanks

[servc4]

Yes but like you see you ask about block 3333 and respond is with block 3332 That's why i decide to use https://github.com/Karbovanets/Karbowanec-Blockchain-Explorer it's work. Regards

[servc4]

Hi I almost lunch properly working explorer but I have issue with CROS header Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://127.0.0.1:18081/getinfo. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

How I can resolve that problem .htaccess

Header set Access-Control-Allow-Origin "*"
Header add Access-Control-Allow-Headers "origin, x-requested-with, content-type"
Header add Access-Control-Allow-Methods "PUT, GET, POST, DELETE, OPTIONS"

Is not working I need to have ad-don in my browser to view page properly.

Regards

[flarecurrency]

@servc4 I fixed the blockchain explorer from the pool.

You can fix the problem by changing this in your config.js

var blockchainExplorer = "http://YOUR POOL ADDRES/?hash={id}#blockchain_block";
var transactionExplorer = "http://YOUR POOL ADDRES/?hash={id}#blockchain_transaction";

next step is that you have to compile your blockchain again with some changes in the code;

1. open this file with a editor src/Rpc/RpcServer.cpp
2. add this under rule 165; response.addHeader("Access-Control-Allow-Origin", "*");
3. recompile your blockchain and it works!

[servc4]

You mean after line 165 response.addHeader("Content-Type", "application/json");

I need to add this response.addHeader("Access-Control-Allow-Origin", "*");

because I did that and recompile the source and is same...

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://127.0.0.1:18081/getinfo. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

[blueavenue]

It is solved the issue yet?

[servc4]

Hi In file /src/HTTP/HttpResponse.cpp change:

HttpResponse::HttpResponse() { status = STATUS_200; headers["Server"] = "CryptoNote-based HTTP server"; }

on this:

HttpResponse::HttpResponse() { status = STATUS_200; headers["Server"] = "CryptoNote-based HTTP server"; headers["Access-Control-Allow-Origin"] = "*"; }

end build source. Regards

[blueavenue]

Thx i will try it and give feedback.

But i have no edit the RpcServer.cpp? Only the HttpResponse.cpp?

[3ch0elite]

Anyfix with using just forknote-linux? Only issue i have testing is blockdetails not showing i just get page 400 error not found seems to point to 0.0.0.0/cointicker/blockaddress

[blueavenue]

Feedback: It doesnt works. I build code again with the code snippets you all talk about here. My Blockchain Explorer doesnt work. Its empty page.

What Daemon you use? Forknote with config-file? Forknote without config-file? Or another Coin-Repo?

Additional Question:

What is the var api_explorer in the website config.js? And what var i have to put in?

Please help!

[servc4]

You need to run your demon with additional --enable-blockexplorer in start command

Regards

[blueavenue]

EDIT: Blockchain Explorer works (changed nothing in the Coin Src, only gived apache2.conf the CORS Info):

Always set these headers. Header always set Access-Control-Allow-Origin "*" Header always set Access-Control-Allow-Methods "POST, GET, OPTIONS, DELETE, PUT" Header always set Access-Control-Max-Age "1000" Header always set Access-Control-Allow-Headers "x-requested-with, Content-Type, origin, authorization, accept, client-security-token"

Then i saved the conf and do this in the command:

a2enmod headers

After that i restarted the apache2 server with:

supo service apache2 restart

Than in the pool-website config.js i put the correct API Port in.

But i have a new issue "Invalid API call"?

Is this because i have no SSL yet? Need i HTTPS for correct API working? A few days ago, i setup a pool and there stands ="Mining Pool is running" by calling the API (I think this was the time, when i run the domain with SSL, but not sure yet). Whats wrong? Thx for help.

The second issue is: I click on a block in the blockchain explorer and the website load and load and load and nothing shown... how can i solve it?

I did this like you wrote (with my Pool-Address in this case):

var blockchainExplorer = "http://62.75.139.132/pool/?hash={id}#blockchain_block";

var transactionExplorer = "http://62.75.139.132/pool/?hash={id}#blockchain_transaction";

Doesnt work.

------------- Old comment: Thx servc4 but disnt work. Have put this in the conf-file (like in the forknote-pool install instruction):

rpc-bind-ip=0.0.0.0 enable-blockexplorer=1 enable-cors=*

I tried further with:

./mycoind --config-file configs/mycoin.conf --enable-blockexplorer

But --enable-blockexplorer is not supported

What you mean with start command? Upstart Service?

---

[blueavenue]

THX to all! All works fine! The Pool is up! (62.75.139.132/pool) - Later with Domainname. (I edit Coin Source [http_server.cpp and rpc_server.cpp] and Build again)

Only the network site doesnt show me the pool and other informations. But i think, i can solve the issue the next days.

[inzider]

THX to all! All works fine! The Pool is up! (62.75.139.132/pool) - Later with Domainname. (I edit Coin Source [http_server.cpp and rpc_server.cpp] and Build again)

Only the network site doesnt show me the pool and other informations. But i think, i can solve the issue the next days.

Hi! Do you remember what you did to show the blocks in blockexplorer?