'use strict';
var utils = require('./../utils');
var settle = require('./../core/settle');
var buildFullPath = require('../core/buildFullPath');
var buildURL = require('./../helpers/buildURL');
var http = require('http');
var https = require('https');
var httpFollow = require('follow-redirects').http;
var httpsFollow = require('follow-redirects').https;
var url = require('url');
var zlib = require('zlib');
var VERSION = require('./../env/data').version;
var createError = require('../core/createError');
var enhanceError = require('../core/enhanceError');
var defaults = require('../defaults');
var Cancel = require('../cancel/Cancel');
var isHttps = /https:?/;
/**
*
* @param {http.ClientRequestArgs} options
* @param {AxiosProxyConfig} proxy
* @param {string} location
*/
function setProxy(options, proxy, location) {
options.hostname = proxy.host;
options.host = proxy.host;
options.port = proxy.port;
options.path = location;
// Basic proxy authorization
if (proxy.auth) {
var base64 = Buffer.from(proxy.auth.username + ':' + proxy.auth.password, 'utf8').toString('base64');
options.headers['Proxy-Authorization'] = 'Basic ' + base64;
}
// If a proxy is used, any redirects must also pass through the proxy
options.beforeRedirect = function beforeRedirect(redirection) {
redirection.headers.host = redirection.host;
setProxy(redirection, proxy, redirection.href);
};
}
/*eslint consistent-return:0*/
module.exports = function httpAdapter(config) {
return new Promise(function dispatchHttpRequest(resolvePromise, rejectPromise) {
var onCanceled;
function done() {
if (config.cancelToken) {
config.cancelToken.unsubscribe(onCanceled);
}
if (config.signal) {
config.signal.removeEventListener('abort', onCanceled);
}
}
var resolve = function resolve(value) {
done();
resolvePromise(value);
};
var rejected = false;
var reject = function reject(value) {
done();
rejected = true;
rejectPromise(value);
};
var data = config.data;
var headers = config.headers;
var headerNames = {};
Object.keys(headers).forEach(function storeLowerName(name) {
headerNames[name.toLowerCase()] = name;
});
// Set User-Agent (required by some servers)
// See https://github.com/axios/axios/issues/69
if ('user-agent' in headerNames) {
// User-Agent is specified; handle case where no UA header is desired
if (!headers[headerNames['user-agent']]) {
delete headers[headerNames['user-agent']];
}
// Otherwise, use specified value
} else {
// Only set header if it hasn't been set in config
headers['User-Agent'] = 'axios/' + VERSION;
}
if (data && !utils.isStream(data)) {
if (Buffer.isBuffer(data)) {
// Nothing to do...
} else if (utils.isArrayBuffer(data)) {
data = Buffer.from(new Uint8Array(data));
} else if (utils.isString(data)) {
data = Buffer.from(data, 'utf-8');
} else {
return reject(createError(
'Data after transformation must be a string, an ArrayBuffer, a Buffer, or a Stream',
config
));
}
if (config.maxBodyLength > -1 && data.length > config.maxBodyLength) {
return reject(createError('Request body larger than maxBodyLength limit', config));
}
// Add Content-Length header if data exists
if (!headerNames['content-length']) {
headers['Content-Length'] = data.length;
}
}
// HTTP basic authentication
var auth = undefined;
if (config.auth) {
var username = config.auth.username || '';
var password = config.auth.password || '';
auth = username + ':' + password;
}
// Parse url
var fullPath = buildFullPath(config.baseURL, config.url);
var parsed = url.parse(fullPath);
var protocol = parsed.protocol || 'http:';
if (!auth && parsed.auth) {
var urlAuth = parsed.auth.split(':');
var urlUsername = urlAuth[0] || '';
var urlPassword = urlAuth[1] || '';
auth = urlUsername + ':' + urlPassword;
}
if (auth && headerNames.authorization) {
delete headers[headerNames.authorization];
}
var isHttpsRequest = isHttps.test(protocol);
var agent = isHttpsRequest ? config.httpsAgent : config.httpAgent;
var options = {
path: buildURL(parsed.path, config.params, config.paramsSerializer).replace(/^\?/, ''),
method: config.method.toUpperCase(),
headers: headers,
agent: agent,
agents: { http: config.httpAgent, https: config.httpsAgent },
auth: auth
};
if (config.socketPath) {
options.socketPath = config.socketPath;
} else {
options.hostname = parsed.hostname;
options.port = parsed.port;
}
var proxy = config.proxy;
if (!proxy && proxy !== false) {
var proxyEnv = protocol.slice(0, -1) + '_proxy';
var proxyUrl = process.env[proxyEnv] || process.env[proxyEnv.toUpperCase()];
if (proxyUrl) {
var parsedProxyUrl = url.parse(proxyUrl);
var noProxyEnv = process.env.no_proxy || process.env.NO_PROXY;
var shouldProxy = true;
if (noProxyEnv) {
var noProxy = noProxyEnv.split(',').map(function trim(s) {
return s.trim();
});
shouldProxy = !noProxy.some(function proxyMatch(proxyElement) {
if (!proxyElement) {
return false;
}
if (proxyElement === '*') {
return true;
}
if (proxyElement[0] === '.' &&
parsed.hostname.substr(parsed.hostname.length - proxyElement.length) === proxyElement) {
return true;
}
return parsed.hostname === proxyElement;
});
}
if (shouldProxy) {
proxy = {
host: parsedProxyUrl.hostname,
port: parsedProxyUrl.port,
protocol: parsedProxyUrl.protocol
};
if (parsedProxyUrl.auth) {
var proxyUrlAuth = parsedProxyUrl.auth.split(':');
proxy.auth = {
username: proxyUrlAuth[0],
password: proxyUrlAuth[1]
};
}
}
}
}
if (proxy) {
options.headers.host = parsed.hostname + (parsed.port ? ':' + parsed.port : '');
setProxy(options, proxy, protocol + '//' + parsed.hostname + (parsed.port ? ':' + parsed.port : '') + options.path);
}
var transport;
var isHttpsProxy = isHttpsRequest && (proxy ? isHttps.test(proxy.protocol) : true);
if (config.transport) {
transport = config.transport;
} else if (config.maxRedirects === 0) {
transport = isHttpsProxy ? https : http;
} else {
if (config.maxRedirects) {
options.maxRedirects = config.maxRedirects;
}
transport = isHttpsProxy ? httpsFollow : httpFollow;
}
if (config.maxBodyLength > -1) {
options.maxBodyLength = config.maxBodyLength;
}
if (config.insecureHTTPParser) {
options.insecureHTTPParser = config.insecureHTTPParser;
}
// Create the request
var req = transport.request(options, function handleResponse(res) {
if (req.aborted) return;
// uncompress the response body transparently if required
var stream = res;
// return the last request in case of redirects
var lastRequest = res.req || req;
// if no content, is HEAD request or decompress disabled we should not decompress
if (res.statusCode !== 204 && lastRequest.method !== 'HEAD' && config.decompress !== false) {
switch (res.headers['content-encoding']) {
/*eslint default-case:0*/
case 'gzip':
case 'compress':
case 'deflate':
// add the unzipper to the body stream processing pipeline
stream = stream.pipe(zlib.createUnzip());
// remove the content-encoding in order to not confuse downstream operations
delete res.headers['content-encoding'];
break;
}
}
var response = {
status: res.statusCode,
statusText: res.statusMessage,
headers: res.headers,
config: config,
request: lastRequest
};
if (config.responseType === 'stream') {
response.data = stream;
settle(resolve, reject, response);
} else {
var responseBuffer = [];
var totalResponseBytes = 0;
stream.on('data', function handleStreamData(chunk) {
responseBuffer.push(chunk);
totalResponseBytes += chunk.length;
// make sure the content length is not over the maxContentLength if specified
if (config.maxContentLength > -1 && totalResponseBytes > config.maxContentLength) {
// stream.destoy() emit aborted event before calling reject() on Node.js v16
rejected = true;
stream.destroy();
reject(createError('maxContentLength size of ' + config.maxContentLength + ' exceeded',
config, null, lastRequest));
}
});
stream.on('aborted', function handlerStreamAborted() {
if (rejected) {
return;
}
stream.destroy();
reject(createError('error request aborted', config, 'ERR_REQUEST_ABORTED', lastRequest));
});
stream.on('error', function handleStreamError(err) {
if (req.aborted) return;
reject(enhanceError(err, config, null, lastRequest));
});
stream.on('end', function handleStreamEnd() {
try {
var responseData = responseBuffer.length === 1 ? responseBuffer[0] : Buffer.concat(responseBuffer);
if (config.responseType !== 'arraybuffer') {
responseData = responseData.toString(config.responseEncoding);
if (!config.responseEncoding || config.responseEncoding === 'utf8') {
responseData = utils.stripBOM(responseData);
}
}
response.data = responseData;
} catch (err) {
reject(enhanceError(err, config, err.code, response.request, response));
}
settle(resolve, reject, response);
});
}
});
// Handle errors
req.on('error', function handleRequestError(err) {
if (req.aborted && err.code !== 'ERR_FR_TOO_MANY_REDIRECTS') return;
reject(enhanceError(err, config, null, req));
});
// set tcp keep alive to prevent drop connection by peer
req.on('socket', function handleRequestSocket(socket) {
// default interval of sending ack packet is 1 minute
socket.setKeepAlive(true, 1000 * 60);
});
// Handle request timeout
if (config.timeout) {
// This is forcing a int timeout to avoid problems if the `req` interface doesn't handle other types.
var timeout = parseInt(config.timeout, 10);
if (isNaN(timeout)) {
reject(createError(
'error trying to parse `config.timeout` to int',
config,
'ERR_PARSE_TIMEOUT',
req
));
return;
}
// Sometime, the response will be very slow, and does not respond, the connect event will be block by event loop system.
// And timer callback will be fired, and abort() will be invoked before connection, then get "socket hang up" and code ECONNRESET.
// At this time, if we have a large number of request, nodejs will hang up some socket on background. and the number will up and up.
// And then these socket which be hang up will devoring CPU little by little.
// ClientRequest.setTimeout will be fired on the specify milliseconds, and can make sure that abort() will be fired after connect.
req.setTimeout(timeout, function handleRequestTimeout() {
req.abort();
var transitional = config.transitional || defaults.transitional;
reject(createError(
'timeout of ' + timeout + 'ms exceeded',
config,
transitional.clarifyTimeoutError ? 'ETIMEDOUT' : 'ECONNABORTED',
req
));
});
}
if (config.cancelToken || config.signal) {
// Handle cancellation
// eslint-disable-next-line func-names
onCanceled = function(cancel) {
if (req.aborted) return;
req.abort();
reject(!cancel || (cancel && cancel.type) ? new Cancel('canceled') : cancel);
};
config.cancelToken && config.cancelToken.subscribe(onCanceled);
if (config.signal) {
config.signal.aborted ? onCanceled() : config.signal.addEventListener('abort', onCanceled);
}
}
// Send the request
if (utils.isStream(data)) {
data.on('error', function handleStreamError(err) {
reject(enhanceError(err, config, null, req));
}).pipe(req);
} else {
req.end(data);
}
});
};