user2141: I have a little problem with the launch of the software: https://bitcointalk.org/index.php?topic=55038.0
My blockchain is fully loaded and JSON-RPC also works, since I use it in a PHP script whose code is:
<a href="?api=getblockcount">getblockcount</a> |  
<a href="?api=getdifficulty">getdifficulty</a> | 

<?php

require_once 'jsonRPCClient.php';
$bitcoin = new jsonRPCClient('http://user:xxxxx@127.0.0.1:8332/');

switch ($_GET['api']) {
    case 'getblockcount':  
          echo "<pre>\n";
            $homepage = file_get_contents('https://blockchain.info/q/getblockcount');
            echo 'Blockchain: ' .$homepage;           
          print_r('<br />Mybitcoin: '.$bitcoin->getblockcount()); 
          echo "</pre>";        
        break;    
    case 'getdifficulty':
          echo "<pre>\n";
          print_r($bitcoin->getdifficulty());
          echo "</pre>";        
        break; 

    default:
          echo "<pre>\n";
          print_r($bitcoin->getinfo());
          echo "</pre>";        
        break;
}


?>

The result:

So, I have installed cpuminer and when I try to run this (basic) command:
./minerd --url=http://127.0.0.1:8332 --userpass=user:xxxxx

I get this error:
[2017-02-27 15:54:30] Binding thread 0 to cpu 0
[2017-02-27 15:54:30] 4 miner threads started, using 'scrypt' algorithm.
[2017-02-27 15:54:30] Binding thread 3 to cpu 3
[2017-02-27 15:54:30] Binding thread 2 to cpu 2
[2017-02-27 15:54:30] Binding thread 1 to cpu 1
[2017-02-27 15:54:30] No payout address provided, switching to getwork
[2017-02-27 15:54:30] HTTP request failed: The requested URL returned error: 404 Not Found
[2017-02-27 15:54:30] json_rpc_call failed, retry after 30 seconds

I have tried also this one:
./minerd --url=stratum+tcp://127.0.0.1:8332 --userpass=user:xxxxx

I get this error:
[2017-02-27 16:05:18] Starting Stratum on stratum+tcp://127.0.0.1:8332
[2017-02-27 16:05:18] 4 miner threads started, using 'scrypt' algorithm.
[2017-02-27 16:05:18] Binding thread 2 to cpu 2
[2017-02-27 16:05:18] Binding thread 3 to cpu 3
[2017-02-27 16:05:18] Binding thread 1 to cpu 1
[2017-02-27 16:05:18] Binding thread 0 to cpu 0
[2017-02-27 16:05:18] JSON decode failed(1): '[' or '{' expected near 'HTTP'
[2017-02-27 16:05:18] stratum_subscribe send failed
[2017-02-27 16:05:18] ...retry after 30 seconds

Yet my JSON-RPC port is properly open and running!
I do not understand.
Edit:
Output of --protocol-dump 
         {
            "txid": "d164587bb86b8bc512875234d9e9287a5c2b55132b1ac5cd17199e59fb3a7e15",
            "depends": [],
            "data": "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",
            "hash": "d164587bb86b8bc512875234d9e9287a5c2b55132b1ac5cd17199e59fb3a7e15",
            "fee": 147240,
            "weight": 3260,
            "sigops": 2
         },
         {
            "txid": "0049b022864e0f27ca17177b768dfd990d2aed315b82cbf5c7e6574243223593",
            "depends": [],
            "data": "0100000001b68373162494d0409621feeb056e9d5133ae26245e1a44f839fd3c98bbe2e86a010000006b483045022100c0bd2aca622330e46b1fd58148420b1297754524ff820ac8845bf4dc17a842b40220372666ba44e9289f1fb1ac965486889d6ac365a46c61e0e85e81d6dff97aa38d012102409fafcff27fb07a8b1ce51898f081d4e84ce947a09bb4e5046cd4601ee239adffffffff010fe80200000000001976a9145d5925ac98510c6d331f1c4653332b391d79a00888ac00000000",
            "hash": "0049b022864e0f27ca17177b768dfd990d2aed315b82cbf5c7e6574243223593",
            "fee": 34683,
            "weight": 768,
            "sigops": 1
         }
      ],
      "target": "0000000000000000027e93000000000000000000000000000000000000000000",
      "noncerange": "00000000ffffffff",
      "sigoplimit": 20000,
      "sizelimit": 4000000,
      "bits": "18027e93",
      "height": 454996
   },
   "id": 0
}
[2017-02-27 16:25:17] No payout address provided, switching to getwork
[2017-02-27 16:25:17] JSON protocol request:
{"method": "getwork", "params": [], "id":0}


* Rebuilt URL to: http://127.0.0.1:8332/
* Found bundle for host 127.0.0.1: 0x7f58a0013d60 [can pipeline]
* Re-using existing connection! (#0) with host 127.0.0.1
* Connected to 127.0.0.1 (127.0.0.1) port 8332 (#0)
* Server auth using Basic with user 'user'
> POST / HTTP/1.1
Host: 127.0.0.1:8332
Authorization: Basic Y29pbmNvaW46YXplcnR5
Accept-Encoding: deflate, gzip
Content-Type: application/json
Content-Length: 45
User-Agent: cpuminer/2.4.5
X-Mining-Extensions: midstate

* The requested URL returned error: 404 Not Found
* Closing connection 0
[2017-02-27 16:25:17] HTTP request failed: The requested URL returned error: 404 Not Found
[2017-02-27 16:25:17] json_rpc_call failed, retry after 30 seconds

Output of --no-getwork 
root@localhost:~/cpuminer-2.4.5# ./minerd --url=http://127.0.0.1:8332 --userpass=user:***** --no-getwork
[2017-02-27 16:51:50] Binding thread 0 to cpu 0
[2017-02-27 16:51:50] Binding thread 1 to cpu 1
[2017-02-27 16:51:50] Binding thread 2 to cpu 2
[2017-02-27 16:51:50] 4 miner threads started, using 'scrypt' algorithm.
[2017-02-27 16:51:50] Binding thread 3 to cpu 3
[2017-02-27 16:51:50] No payout address provided
[2017-02-27 16:51:50] json_rpc_call failed, retry after 30 seconds
[2017-02-27 16:52:21] No payout address provided


user48884: The HTTP 404 error is returned when an RPC command does not exist. The RPC command you are trying to use is getwork, and getwork was removed in Bitcoin Core 0.10.0. If you want to use getwork, you will need to downgrade to a version of Bitcoin Core prior to 0.10.0, but I would recommend that you not do that. Instead you should use getblocktemplate which you do by using the --no-getwork option. When you do that, you must also specify --coinbase-addr=ADDR since Bitcoin Core will not build a coinbase transaction for the miner to use. Instead the miner will need to make its own coinbase transaction and needs to have that option set.

2141: <p>I have a little problem with the launch of the software: <a href="https://bitcointalk.org/index.php?topic=55038.0" rel="nofollow noreferrer">https://bitcointalk.org/index.php?topic=55038.0</a></p>

<p>My blockchain is fully loaded and JSON-RPC also works, since I use it in a PHP script whose code is:</p>

<pre><code>&lt;a href="?api=getblockcount"&gt;getblockcount&lt;/a&gt; |  
&lt;a href="?api=getdifficulty"&gt;getdifficulty&lt;/a&gt; | 

&lt;?php

require_once 'jsonRPCClient.php';
$bitcoin = new jsonRPCClient('http://user:xxxxx@127.0.0.1:8332/');

switch ($_GET['api']) {
    case 'getblockcount':  
          echo "&lt;pre&gt;\n";
            $homepage = file_get_contents('https://blockchain.info/q/getblockcount');
            echo 'Blockchain: ' .$homepage;           
          print_r('&lt;br /&gt;Mybitcoin: '.$bitcoin-&gt;getblockcount()); 
          echo "&lt;/pre&gt;";        
        break;    
    case 'getdifficulty':
          echo "&lt;pre&gt;\n";
          print_r($bitcoin-&gt;getdifficulty());
          echo "&lt;/pre&gt;";        
        break; 

    default:
          echo "&lt;pre&gt;\n";
          print_r($bitcoin-&gt;getinfo());
          echo "&lt;/pre&gt;";        
        break;
}


?&gt;
</code></pre>

<p>The result:<br>
<a href="https://i.stack.imgur.com/D3yZY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/D3yZY.png" alt="Result php json rpc code"></a></p>

<p>So, I have installed cpuminer and when I try to run this (basic) command:</p>

<pre><code>./minerd --url=http://127.0.0.1:8332 --userpass=user:xxxxx
</code></pre>

<p>I get this error:</p>

<pre><code>[2017-02-27 15:54:30] Binding thread 0 to cpu 0
[2017-02-27 15:54:30] 4 miner threads started, using 'scrypt' algorithm.
[2017-02-27 15:54:30] Binding thread 3 to cpu 3
[2017-02-27 15:54:30] Binding thread 2 to cpu 2
[2017-02-27 15:54:30] Binding thread 1 to cpu 1
[2017-02-27 15:54:30] No payout address provided, switching to getwork
[2017-02-27 15:54:30] HTTP request failed: The requested URL returned error: 404 Not Found
[2017-02-27 15:54:30] json_rpc_call failed, retry after 30 seconds
</code></pre>

<p>I have tried also this one:</p>

<pre><code>./minerd --url=stratum+tcp://127.0.0.1:8332 --userpass=user:xxxxx
</code></pre>

<p>I get this error:</p>

<pre><code>[2017-02-27 16:05:18] Starting Stratum on stratum+tcp://127.0.0.1:8332
[2017-02-27 16:05:18] 4 miner threads started, using 'scrypt' algorithm.
[2017-02-27 16:05:18] Binding thread 2 to cpu 2
[2017-02-27 16:05:18] Binding thread 3 to cpu 3
[2017-02-27 16:05:18] Binding thread 1 to cpu 1
[2017-02-27 16:05:18] Binding thread 0 to cpu 0
[2017-02-27 16:05:18] JSON decode failed(1): '[' or '{' expected near 'HTTP'
[2017-02-27 16:05:18] stratum_subscribe send failed
[2017-02-27 16:05:18] ...retry after 30 seconds
</code></pre>

<p>Yet my JSON-RPC port is properly open and running!<br>
I do not understand.</p>

<p><strong>Edit:</strong>
Output of <code>--protocol-dump</code> </p>

<pre><code>         {
            "txid": "d164587bb86b8bc512875234d9e9287a5c2b55132b1ac5cd17199e59fb3a7e15",
            "depends": [],
            "data": "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",
            "hash": "d164587bb86b8bc512875234d9e9287a5c2b55132b1ac5cd17199e59fb3a7e15",
            "fee": 147240,
            "weight": 3260,
            "sigops": 2
         },
         {
            "txid": "0049b022864e0f27ca17177b768dfd990d2aed315b82cbf5c7e6574243223593",
            "depends": [],
            "data": "0100000001b68373162494d0409621feeb056e9d5133ae26245e1a44f839fd3c98bbe2e86a010000006b483045022100c0bd2aca622330e46b1fd58148420b1297754524ff820ac8845bf4dc17a842b40220372666ba44e9289f1fb1ac965486889d6ac365a46c61e0e85e81d6dff97aa38d012102409fafcff27fb07a8b1ce51898f081d4e84ce947a09bb4e5046cd4601ee239adffffffff010fe80200000000001976a9145d5925ac98510c6d331f1c4653332b391d79a00888ac00000000",
            "hash": "0049b022864e0f27ca17177b768dfd990d2aed315b82cbf5c7e6574243223593",
            "fee": 34683,
            "weight": 768,
            "sigops": 1
         }
      ],
      "target": "0000000000000000027e93000000000000000000000000000000000000000000",
      "noncerange": "00000000ffffffff",
      "sigoplimit": 20000,
      "sizelimit": 4000000,
      "bits": "18027e93",
      "height": 454996
   },
   "id": 0
}
[2017-02-27 16:25:17] No payout address provided, switching to getwork
[2017-02-27 16:25:17] JSON protocol request:
{"method": "getwork", "params": [], "id":0}


* Rebuilt URL to: http://127.0.0.1:8332/
* Found bundle for host 127.0.0.1: 0x7f58a0013d60 [can pipeline]
* Re-using existing connection! (#0) with host 127.0.0.1
* Connected to 127.0.0.1 (127.0.0.1) port 8332 (#0)
* Server auth using Basic with user 'user'
&gt; POST / HTTP/1.1
Host: 127.0.0.1:8332
Authorization: Basic Y29pbmNvaW46YXplcnR5
Accept-Encoding: deflate, gzip
Content-Type: application/json
Content-Length: 45
User-Agent: cpuminer/2.4.5
X-Mining-Extensions: midstate

* The requested URL returned error: 404 Not Found
* Closing connection 0
[2017-02-27 16:25:17] HTTP request failed: The requested URL returned error: 404 Not Found
[2017-02-27 16:25:17] json_rpc_call failed, retry after 30 seconds
</code></pre>

<p>Output of <code>--no-getwork</code> </p>

<pre><code>root@localhost:~/cpuminer-2.4.5# ./minerd --url=http://127.0.0.1:8332 --userpass=user:***** --no-getwork
[2017-02-27 16:51:50] Binding thread 0 to cpu 0
[2017-02-27 16:51:50] Binding thread 1 to cpu 1
[2017-02-27 16:51:50] Binding thread 2 to cpu 2
[2017-02-27 16:51:50] 4 miner threads started, using 'scrypt' algorithm.
[2017-02-27 16:51:50] Binding thread 3 to cpu 3
[2017-02-27 16:51:50] No payout address provided
[2017-02-27 16:51:50] json_rpc_call failed, retry after 30 seconds
[2017-02-27 16:52:21] No payout address provided
</code></pre>
 48884: <p>The HTTP 404 error is returned when an RPC command does not exist. The RPC command you are trying to use is <code>getwork</code>, and <code>getwork</code> was removed in Bitcoin Core 0.10.0. If you want to use <code>getwork</code>, you will need to downgrade to a version of Bitcoin Core prior to 0.10.0, but I would recommend that you not do that. Instead you should use <code>getblocktemplate</code> which you do by using the <code>--no-getwork</code> option. When you do that, you must also specify <code>--coinbase-addr=ADDR</code> since Bitcoin Core will not build a coinbase transaction for the miner to use. Instead the miner will need to make its own coinbase transaction and needs to have that option set.</p>
