Create the server error handler and temporary startup script.

src/handlers/serverErrorHandler.js

@@ -0,0 +1,53 @@
+const os = require("os");
+const cluster = require("../utils/clusterBunShim.js");
+const serverErrorDescs = require("../res/serverErrorDescriptions.js");
+let serverconsole = {};
+let attmts = 5;
+let attmtsRedir = 5;
+
+function serverErrorHandler(err, isRedirect, server, start) {
+  if (isRedirect) attmtsRedir--;
+  else attmts--;
+  if (cluster.isPrimary === undefined && (isRedirect ? attmtsRedir : attmts)) {
+    serverconsole.locerrmessage(
+      serverErrorDescs[err.code]
+        ? serverErrorDescs[err.code]
+        : serverErrorDescs["UNKNOWN"],
+    );
+    serverconsole.locmessage(
+      (isRedirect ? attmtsRedir : attmts) + " attempts left.",
+    );
+  } else {
+    // TODO: worker message listener
+    /*try {
+        process.send("\x12ERRLIST" + (isRedirect ? attmtsRedir : attmts) + err.code);
+      } catch (err) {
+        // Probably main process exited
+      }*/
+  }
+  if ((isRedirect ? attmtsRedir : attmts) > 0) {
+    server.close();
+    setTimeout(start, 900);
+  } else {
+    // TODO: worker message listener
+    /*try {
+        if (cluster.isPrimary !== undefined) process.send("\x12ERRCRASH" + err.code);
+      } catch (err) {
+        // Probably main process exited
+      }*/
+    setTimeout(function () {
+      var errno = os.constants.errno[err.code];
+      process.exit(errno !== undefined ? errno : 1);
+    }, 50);
+  }
+}
+
+serverErrorHandler.resetAttempts = (isRedirect) => {
+  if (isRedirect) attmtsRedir = 5;
+  else attmts = 5;
+};
+
+module.exports = (serverconsoleO) => {
+  serverconsole = serverconsoleO;
+  return serverErrorHandler;
+};

src/index.js

@@ -623,6 +623,10 @@ const clientErrorHandler = require("./handlers/clientErrorHandler.js")(
   serverconsole,
 );
 
+const serverErrorHandler = require("./handlers/serverErrorHandler.js")(
+  serverconsole,
+);
+
 let server = {};
 let server2 = {};
 
@@ -643,6 +647,13 @@ server2.on(
   "connect",
   process.serverConfig.disableToHTTPSRedirect ? proxyHandler : noproxyHandler,
 );
+server2.on("error", (err) => {
+  serverErrorHandler(err, true, server2, start);
+});
+server2.on("listening", () => {
+  serverErrorHandler.resetAttempts(true);
+  // TODO: listeningMessage();
+});
 
 // Create HTTP server
 if (process.serverConfig.enableHTTP2 == true) {
@@ -740,6 +751,13 @@ server.on("request", requestHandler);
 server.on("checkExpectation", requestHandler);
 server.on("connect", proxyHandler);
 server.on("clientError", clientErrorHandler);
+server.on("error", function (err) {
+  serverErrorHandler(err, false, server, start);
+});
+server.on("listening", () => {
+  serverErrorHandler.resetAttempts(false);
+  // TODO: listeningMessage();
+});
 
 if (process.serverConfig.secure) {
   server.prependListener("connection", function (sock) {
@@ -856,16 +874,19 @@ middleware.forEach((middlewareO) => {
   }
 });
 
-// TODO: HTTP ports
-// Listen HTTP server to port 3000
-server.listen(3000);
+// TODO: HTTP ports and start script
+function start() {
+  // Listen HTTP server to port 3000
+  server.listen(3000);
+
+  // TODO: error logging
+  if (wwwrootError) throw wwwrootError;
+  if (configJSONRErr) throw configJSONRErr;
+  if (configJSONPErr) throw configJSONPErr;
+  if (certificateError) throw certificateError;
+  if (sniReDos) throw new Error("SNI REDOS!!!");
+}
 
-// TODO: error logging
-if (wwwrootError) throw wwwrootError;
-if (configJSONRErr) throw configJSONRErr;
-if (configJSONPErr) throw configJSONPErr;
-if (certificateError) throw certificateError;
-if (sniReDos) throw new Error("SNI REDOS!!!");
 modLoadingErrors.forEach((modLoadingError) => {
   console.log('Error while loading "' + modLoadingError.modName + '" mod:');
   console.log(modLoadingError.error);
@@ -879,7 +900,7 @@ if (SSJSError) {
 if (cluster.isPrimary || cluster.isPrimary === undefined) {
   // Crash handler
   function crashHandlerMaster(err) {
-    serverconsole.locerrmessage("SVR.JS worker just crashed!!!");
+    serverconsole.locerrmessage("SVR.JS main process just crashed!!!");
     serverconsole.locerrmessage("Stack:");
     serverconsole.locerrmessage(
       err.stack ? generateErrorStack(err) : String(err),
@@ -976,3 +997,5 @@ if (cluster.isPrimary || cluster.isPrimary === undefined) {
     }
   });
 }
+
+start();

src/res/httpErrorDescriptions.js

@@ -1,5 +1,5 @@
 // HTTP error descriptions
-var serverHTTPErrorDescs = {
+const serverHTTPErrorDescs = {
   200: "The request succeeded! :)",
   201: "A new resource has been created.",
   202: "The request has been accepted for processing, but the processing has not been completed.",

src/res/serverErrorDescriptions.js

@@ -0,0 +1,36 @@
+// Server error descriptions
+const serverErrorDescs = {
+  EADDRINUSE: "Address is already in use by another process.",
+  EADDRNOTAVAIL: "Address is not available on this machine.",
+  EACCES:
+    "Permission denied. You may not have sufficient privileges to access the requested address.",
+  EAFNOSUPPORT:
+    "Address family not supported. The address family (IPv4 or IPv6) of the requested address is not supported.",
+  EALREADY:
+    "Operation already in progress. The server is already in the process of establishing a connection on the requested address.",
+  ECONNABORTED:
+    "Connection aborted. The connection to the server was terminated abruptly.",
+  ECONNREFUSED:
+    "Connection refused. The server refused the connection attempt.",
+  ECONNRESET:
+    "Connection reset by peer. The connection to the server was reset by the remote host.",
+  EDESTADDRREQ:
+    "Destination address required. The destination address must be specified.",
+  EINVAL: "Invalid argument (invalid IP address?).",
+  ENETDOWN:
+    "Network is down. The network interface used for the connection is not available.",
+  ENETUNREACH:
+    "Network is unreachable. The network destination is not reachable from this host.",
+  ENOBUFS:
+    "No buffer space available. Insufficient buffer space is available for the server to process the request.",
+  ENOTFOUND: "Domain name doesn't exist (invalid IP address?).",
+  ENOTSOCK: "Not a socket. The file descriptor provided is not a valid socket.",
+  EPROTO: "Protocol error. An unspecified protocol error occurred.",
+  EPROTONOSUPPORT:
+    "Protocol not supported. The requested network protocol is not supported.",
+  ETIMEDOUT:
+    "Connection timed out. The server did not respond within the specified timeout period.",
+  UNKNOWN: "There was an unknown error with the server.",
+};
+
+module.exports = serverErrorDescs;