本文介绍了多次向本地主机发出http.get请求后,出现EADDRNOTAVAIL的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
在28233个请求之后对本地主机(Apache)执行许多http.get-requests时,我得到EADDRNOTAVAIL
.
When doing many http.get-requests to localhost (Apache) after 28233 requests I get EADDRNOTAVAIL
.
损坏时:
- 我不能做对本地主机的http.request持续了大约10秒钟(
EADDRNOTAVAIL
)
- I cannot do a http.request to localhost for (round about) 10 seconds (
EADDRNOTAVAIL
)
这10秒钟
- 我可以做
curl http://localhost
(Apache中没有错误,它仍然可以像魅力一样工作) - 我可以(向node.js发送)到
www.google.com
的http.get-request(错误仅影响到本地主机的请求)
- I can do
curl http://localhost
(there is no error in Apache, it is still working like charm) - I can do a http.get-request (from node.js) to
www.google.com
(the error only affects requests to localhost)
10秒后
- 我可以再次执行对本地主机的http.request(好像node.js自己已经治愈了)
- I can do a http.request to localhost again (as if node.js has healed itself)
这是代码:
var http = require( "http");
function httpRequest( callback ) {
var options = {
host: 'localhost',
port: 80,
path: ''
},
data = "";
http.get(options, function(resp){
resp.on('data', function( chunk ){
data += chunk;
}).on("end", function() {
callback( null, data );
});
}).on("error", function(e){
callback( e );
});
}
function loop( i, callback ) {
if( i < 100000 ) {
httpRequest( function( err, data ) {
if( err ) {
console.log( "Error!", i, err );
return;
}
if( i % 1000 === 0 ) {
console.log( i );
}
loop( i+1, callback );
});
} else {
callback();
}
}
console.log( "GO!");
loop( 0, function() {
console.log( "READY!");
});
推荐答案
我通过覆盖默认的全局代理找到了解决方案.一种可能性是设置maxSockets:1
:
I have found the solution by overwriting the default global agent. One possibility is to set maxSockets:1
:
var http = require( "http"),
agent = new http.Agent( {maxSockets: 1} ); // <-- this is new
function httpRequest( callback ) {
var options = {
host: 'localhost',
port: 80,
path: '',
agent: agent // <-- and this is new
},
...
通过此更正,以上示例可以正常工作.但是我的生产代码中仍然出现了EADDRNOTAVAIL问题,所以将agent
设置为false
终于做到了:
With this correction the example above works. But I still had the EADDRNOTAVAIL issue within my production code, so setting the agent
to false
did it finally:
var http = require( "http");
function httpRequest( callback ) {
var options = {
host: 'localhost',
port: 80,
path: '',
agent: false // <-- here
},
...
我也在 GitHub 上发布了此问题.
I have posted this issue also on GitHub.
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