Category Archives: Stack Overflow

How to use a different version of python during NPM install?

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I have terminal access to a VPS running centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install)

wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
tar -xf Python-2.7.3.tgz
cd Python-2.7.3
./configure
make
make altinstall

then I installed node.js from source via these commands:

python2.7 ./configure
make
make install

The problem is, when I use npm install and try to install a node.js package which requires python > 2.4.3 I get this error:

gyp ERR! configure error
gyp ERR! stack Error: Python executable "python" is v2.4.3, which is not supported by gyp.
gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
gyp ERR! stack     at failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:125:14)
gyp ERR! stack     at /usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:114:9

how should I "pass the --python switch to point to Python >= v2.5.0"?

How to use a different version of python duing NPM install?

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Salam (means Hello) :)

I have terminal access to a VPS running centos 5.9 and default python 2.4.3 installed. I also installed python 2.7.3 via these commands: (I used make altinstall instead of make install)

wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tgz
tar -xf Python-2.7.3.tgz
cd Python-2.7.3
./configure
make
make altinstall

then I installed node.js from source via these commands:

python2.7 ./configure
make
make install

The problem is, when I use npm install and try to install a node.js package which requires python > 2.4.3 I get this error:

gyp ERR! configure error
gyp ERR! stack Error: Python executable "python" is v2.4.3, which is not supported by gyp.
gyp ERR! stack You can pass the --python switch to point to Python >= v2.5.0 & < 3.0.0.
gyp ERR! stack     at failPythonVersion (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:125:14)
gyp ERR! stack     at /usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/configure.js:114:9

how should I "pass the --python switch to point to Python >= v2.5.0"?

Trouble with a simple display:table layout

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Salam (means hello) :)

I have the following simple layout, the problem is that adding content to right div makes content on left one come down:

JS Fiddle

<!DOCTYPE html>
<html>
<head>
    <style>
        .parent{
            width:800px;
            height:100px;
            display: inline-table;
            border: 1px solid #e8e8e8;
            background: #fcfcfc;
        }
        .parent .right{
            width:90px;
            display:table-cell;
            padding-top: 10px;
            text-align: center;
            background: #f5f5f5;
            color:#666666;
        }
        .parent .left{
            width:710px;
            display:table-cell;
            padding-top: 0px;
        }
    </style>
</head>
<body>
<div class="parent">
    <div class="left">
        This cell has padding-top:0px
    </div>
    <div class="right">
        <img src="images/icon.png">
        <br>some text
    </div>
</div>
</body>
</html>

Trouble with a simple display:table layout

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Salam (means hello) :)

I have the following simple layout, the problem is that adding content to right div makes content on left one come down:

JS Fiddle

<!DOCTYPE html>
<html>
<head>
    <style>
        .parent{
            width:800px;
            height:100px;
            display: inline-table;
            border: 1px solid #e8e8e8;
            background: #fcfcfc;
        }
        .parent .right{
            width:90px;
            display:table-cell;
            padding-top: 10px;
            text-align: center;
            background: #f5f5f5;
            color:#666666;
        }
        .parent .left{
            width:710px;
            display:table-cell;
            padding-top: 0px;
        }
    </style>
</head>
<body>
<div class="parent">
    <div class="left">
        This cell has padding-top:0px
    </div>
    <div class="right">
        <img src="images/icon.png">
        <br>some text
    </div>
</div>
</body>
</html>

NPM doesn’t install any modules: network socket hangs up

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Salam (means Hello) :)

I have the latest version of node.js installed on ubuntu 12.04, I'm not behind any proxies, and my network settings are correctly configured, and were intact since last time when NPM worked fine. But now NPM hangs up installation of any modules with following error: 

nasser@nasser-desktop:~/projects/server v3$ npm install simple-proxy
npm WARN package.json docco@0.6.2 No repository field.
npm http GET https://registry.npmjs.org/simple-proxy
npm http GET https://registry.npmjs.org/simple-proxy
npm http GET https://registry.npmjs.org/simple-proxy
npm ERR! network socket hang up
npm ERR! network This is most likely not a problem with npm itself
npm ERR! network and is related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network 
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly.  See: 'npm help config'
npm ERR! System Linux 3.5.0-17-generic
npm ERR! command "/usr/bin/node" "/usr/bin/npm" "install" "simple-proxy"
npm ERR! cwd /home/nasser/projects/serverV3
npm ERR! node -v v0.10.18
npm ERR! npm -v 1.3.8
npm ERR! code ECONNRESET
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /home/nasser/projects/serverV3/npm-debug.log
npm ERR! not ok code 0

NPM doesn’t install any modules: network socket hangs up

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Salam :)

I have the latest version of node.js installed on ubuntu 12.04, I'm not behind any proxies, and my network settings are correctly configured, and were intact since last time when NPM worked fine. But now NPM hangs up installation of any modules with following error: 

nasser@nasser-desktop:~/projects/server v3$ npm install simple-proxy
npm WARN package.json docco@0.6.2 No repository field.
npm http GET https://registry.npmjs.org/simple-proxy
npm http GET https://registry.npmjs.org/simple-proxy
npm http GET https://registry.npmjs.org/simple-proxy
npm ERR! network socket hang up
npm ERR! network This is most likely not a problem with npm itself
npm ERR! network and is related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settings.
npm ERR! network 
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly.  See: 'npm help config'
npm ERR! System Linux 3.5.0-17-generic
npm ERR! command "/usr/bin/node" "/usr/bin/npm" "install" "simple-proxy"
npm ERR! cwd /home/nasser/projects/serverV3
npm ERR! node -v v0.10.18
npm ERR! npm -v 1.3.8
npm ERR! code ECONNRESET
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /home/nasser/projects/serverV3/npm-debug.log
npm ERR! not ok code 0

How to create a simple http proxy in node.js?

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I'm trying to create a proxy server to pass HTTP GET requests from a client to a third party website (say google). My proxy just needs to mirror incoming requests to their corresponding path on the target site, so if my client's requested url is:

127.0.0.1/images/srpr/logo11w.png

the following resource should be served:

http://www.google.com/images/srpr/logo11w.png

here is what I came up with:

http.createServer(onRequest).listen(80);

function onRequest (client_req, client_res) {
    client_req.addListener("end", function() {
        var options = {
            hostname: 'www.google.com',
            port: 80,
            path: client_req.url,
            method: 'GET'
        };
        var req=http.request(options, function(res) {
            var body;
            res.on('data', function (chunk) {
                body += chunk;
            });
            res.on('end', function () {
                 client_res.writeHead(res.statusCode, res.headers);
                 client_res.end(body);
            });
        });
        req.end();
    });
}

it works well with html pages, but for other types of files, it just returns a blank page or some error message from target site (which varies in different sites).

How to create a simple http proxy in node.js?

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Salam (means hello) :)

I'm trying to create a proxy server to pass HTTP GET requests from a client to a third party website (say google). My proxy just needs to mirror incoming requests to their corresponding path on the target site, so if my client's requested url is:

127.0.0.1/images/srpr/logo11w.png

the following resource should be served:

http://www.google.com/images/srpr/logo11w.png

here is what I came up with:

http.createServer(onRequest).listen(80);

function onRequest (client_req, client_res) {
    client_req.addListener("end", function() {
        var options = {
            hostname: 'www.google.com',
            port: 80,
            path: client_req.url,
            method: 'GET'
        };
        var req=http.request(options, function(res) {
            var body;
            res.on('data', function (chunk) {
                body += chunk;
            });
            res.on('end', function () {
                 client_res.writeHead(200, { 'Content-Type': mime_of(client_req.url)});
                 client_res.end(body);
            });
        });
        req.end();
    });
}

it works well with html pages, but for other types of files, it just returns a blank page or some error message from target site (which varies in different sites).