所以我做了一個小 api 來在螢屏上啟動 minecraft 服務器，效果很好。但是現在，每次我啟動或停止服務器時，api 都會以某種方式崩潰，因為 http 服務器在結束后寫入，我找不到任何結束服務器的東西。
我似乎無法找到它的結尾，這很奇怪。
我是 http 服務器、api 和這些東西的新手，所以這可能只是我的愚蠢錯誤。
//@author WizzerStudios on Github
//CC 2021
//Allowed:
//:: Editing
//Disallowed
//:: Redistributing
//:: Claiming as yours
//Importing stuff
var http = require('http');
const { exec } = require("child_process");
var url = require('url');
var https = require('https');
const fs = require('fs');
//Console log
console.log("Wizzer API booted.")
//Create API / HTTP Server
http.createServer(function (req, res) {
var q = url.parse(req.url, true).query;
//Check if password is correctly given.
if(q.password == "Password"){
//Switch to the action.
switch(q.action){
//If action is undefined:
case undefined:
res.end("Action not given.");
break;
//Get Logs is coming soon.
case "getlogs":
if(q.sname == undefined) res.end("No server name given.");
try {
const data = fs.readFileSync('serverfiles/' q.sname '/logs/latest.log', 'utf8');
res.end(data);
} catch (err) {
console.error(err)
res.end("Error occured! Server does not exist or isn't available.");
}
break;
//Start the server using the bash screen command.
case "stop":
//If no server name is given, end the connection.
if(q.sname == undefined) res.end("Server name not specified.");
//If server exists, run the screen command.
if (fs.existsSync('./servers/' q.sname '.json')) {
//Check if a screen session with the same name is already running.
exec('screen -S ' q.sname ' -Q select . ; echo $?',
(error, stdout, stderror) => {
if (error) {
console.error("Error: ", error);
return;
}
var out = stdout;
if(out.includes('0')){
exec('screen -p 0 -S minecraft-server -X eval `stuff "say TEST MESSAGE..."\\015`', (error, stdout, stderror) => {
res.end("Server stopped!"); //It says it stopped and crashes here !!!
});
} else {
res.end('Server already stopped!');
return;
}});
} else {
res.end("Server does not exist!");
return;
}
break;
case "start":
//If no server name is given, end the connection.
if(q.sname == undefined) res.end("Server name not specified.");
//If server exists, run the screen command.
if (fs.existsSync('./servers/' q.sname '.json')) {
//Check if a screen session with the same name is already running.
exec('screen -S ' q.sname ' -Q select . ; echo $?',
(error, stdout, stderror) => {
if (error) {
console.error("Error: ", error);
return;
}
var out = stdout;
if(out.includes('1')){
exec('screen -S ' q.sname ' -dm bash /home/mcserver/api/serverfiles/' q.sname '/start.sh', (error, stdout, stderror) => {
res.end("Server started!"); // Here it says it already stopped!
});
} else {
res.end('Server already started!');
return;
}});
} else {
res.end("Server does not exist!");
return;
}
break;
//Create server action.
case "createServer":
//If no game is given, end connection.
if(q.game == undefined) res.end("Game not given");
//Switch to the game chosen.
switch(q.game){
//Minecraft
case "minecraft":
if(q.sname == undefined) res.end("Server name not given."); // No server name given, end connection.
if(q.port == undefined) res.end("Port not given."); // No port given, end connection.
if(q.ram == undefined) res.end("Please give ram in gigabytes."); // No ram given, end connection.
if(q.software == undefined) res.end("Server software not given."); // Server software not given, end connection.
if(q.version == undefined) res.end("Server version not given."); // Version not given, end connection.
//Check if server already exists:
var path = './servers/' q.sname '.json';
if (fs.existsSync(path)) {
res.end("Server Exists.");
return;
}
ram = Number(q.ram);
ram *= 1024;
let server = {
name: q.sname,
port: q.port,
game: 'Minecraft',
ram: Number(ram),
software: q.software,
version: q.version
};
let data = JSON.stringify(server, null, 2);
fs.mkdir('./serverfiles/' q.sname, (err) => {
if (err) {
throw err;
res.end(err)
}
});
fs.writeFile('./serverfiles/' q.sname '/eula.txt', 'eula=true', function (err) {
if (err) res.end(err);
if(err) console.log(err);
});
fs.writeFile('./serverfiles/' q.sname '/start.sh', '#!/bin/bash\njava -Xmx' Number(ram) 'M ' '-Xms' Number(ram) 'M -jar /home/mcserver/api/serverfiles/' q.sname '/server.jar', function (err) {
if (err) res.end(err);
if(err) console.log(err);
});
exec('chmod x ./serverfiles/' q.sname '/start.sh');
fs.writeFile('./serverfiles/' q.sname '/server.properties', 'port=' q.port, function (err) {
if (err) res.end(err);
if(err) console.log(err);
});
try{
https.get("https://serverjars.com/api/fetchJar/" q.software "/" q.version, function(response) { response.pipe(fs.createWriteStream("serverfiles/" q.sname '/server.jar'))});
} catch(err){
res.end("Failed!")
console.log(err)
}
fs.writeFile("servers/" q.sname ".json", data, (err) => {});
res.write("Server Software: " q.software);
res.write("\nRam: " Number(ram));
res.write("\nServer name: " q.sname);
res.write("\nGame: Minecraft");
res.write("\nPort: " q.port);
res.end("\nVersion " q.version);
}
}
//if(req.url == "/?password=Password&?action=create"){
// res.write("game not given")
//} else if(req.url == "/?password=Password&?action=create&game"){
// res.write("Authenticated!")
//}
//} else {
//res.write("WRONG PASSWORD!")
}
res.end(); //end the response
}).listen(8080); //the server object listens on port 808
events.js:174
throw er; // Unhandled 'error' event
^
Error [ERR_STREAM_WRITE_AFTER_END]: write after end
at write_ (_http_outgoing.js:572:17)
at ServerResponse.write (_http_outgoing.js:567:10)
at exec (/home/mcserver/api/index.js:86:21)
at ChildProcess.exithandler (child_process.js:285:7)
at ChildProcess.emit (events.js:198:13)
at maybeClose (internal/child_process.js:982:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:259:5)
Emitted 'error' event at:
at writeAfterEndNT (_http_outgoing.js:634:7)
at process._tickCallback (internal/process/next_tick.js:63:19)
``` is the error.
I do know that i'm writing after the end, but where did it end?
Also, changing res.write to res.end doesn't crash my code, but it doesn't give anything in my browser.
uj5u.com熱心網友回復：
你必須檢查一下，以防你已經發送了一些回應，不要再發送一些東西。所以每個最好使用：
return res.end();
停止功能。
uj5u.com熱心網友回復：
取出以下行：
res.end(); //end the response <-----------------
}).listen(8080); //the server object listens on port 8080
您在函式內部呼叫了“res.end()”之后呼叫了它
res.end("\nVersion " q.version); // In createServer
呼叫它然后它退出 switch 陳述句并再次執行上面的 res.end()
轉載請註明出處，本文鏈接：https://www.uj5u.com/net/332824.html
標籤：javascript 节点.js 接口 http 服务器