fix the issue of multiple calude using one server by claude code

src/cli.ts

@@ -43,10 +43,12 @@ async function waitForService(
   return false;
 }
 
+import { spawn } from "child_process";
+
 async function main() {
   switch (command) {
     case "start":
-      await run({ daemon: true });
+      run();
       break;
     case "stop":
       await closeService();
@@ -57,8 +59,10 @@ async function main() {
     case "code":
       if (!isServiceRunning()) {
         console.log("Service not running, starting service...");
-        await run({ daemon: true });
+        spawn("ccr", ["start"], {
-        // Wait for service to start, exit with error if timeout
+          detached: true,
+          stdio: "ignore",
+        }).unref();
         if (await waitForService()) {
           executeCodeCommand(process.argv.slice(3));
         } else {

src/index.ts

@@ -6,8 +6,8 @@ import { formatRequest } from "./middlewares/formatRequest";
 import { rewriteBody } from "./middlewares/rewriteBody";
 import OpenAI from "openai";
 import { streamOpenAIResponse } from "./utils/stream";
-import { isServiceRunning, savePid } from "./utils/processCheck";
+import { cleanupPidFile, isServiceRunning, savePid } from "./utils/processCheck";
-import { fork } from "child_process";
+
 
 async function initializeClaudeConfig() {
   const homeDir = process.env.HOME;
@@ -31,7 +31,6 @@ async function initializeClaudeConfig() {
 
 interface RunOptions {
   port?: number;
-  daemon?: boolean;
 }
 
 async function run(options: RunOptions = {}) {
@@ -50,6 +49,19 @@ async function run(options: RunOptions = {}) {
   // Save the PID of the background process
   savePid(process.pid);
 
+  // Handle SIGINT (Ctrl+C) to clean up PID file
+  process.on('SIGINT', () => {
+    console.log("Received SIGINT, cleaning up...");
+    cleanupPidFile();
+    process.exit(0);
+  });
+
+  // Handle SIGTERM to clean up PID file
+  process.on('SIGTERM', () => {
+    cleanupPidFile();
+    process.exit(0);
+  });
+
   // Use port from environment variable if set (for background process)
   const servicePort = process.env.SERVICE_PORT
     ? parseInt(process.env.SERVICE_PORT)

src/utils/close.ts

@@ -1,21 +1,25 @@
-import { isServiceRunning, cleanupPidFile } from './processCheck';
+import { isServiceRunning, cleanupPidFile, getReferenceCount } from './processCheck';
-import { existsSync, readFileSync } from 'fs';
+import { readFileSync } from 'fs';
-import { homedir } from 'os';
+import { HOME_DIR } from '../constants';
 import { join } from 'path';
 
 export async function closeService() {
-    const PID_FILE = join(homedir(), '.claude-code-router.pid');
+    const PID_FILE = join(HOME_DIR, '.claude-code-router.pid');
     
     if (!isServiceRunning()) {
         console.log("No service is currently running.");
         return;
     }
 
+    if (getReferenceCount() > 0) {
+        return;
+    }
+
     try {
         const pid = parseInt(readFileSync(PID_FILE, 'utf-8'));
         process.kill(pid);
         cleanupPidFile();
-        console.log("Service has been successfully stopped.");
+        console.log("claude code router service has been successfully stopped.");
     } catch (e) {
         console.log("Failed to stop the service. It may have already been stopped.");
         cleanupPidFile();

src/utils/codeCommand.ts

@@ -1,5 +1,6 @@
 import { spawn } from 'child_process';
-import { isServiceRunning } from './processCheck';
+import { isServiceRunning, incrementReferenceCount, decrementReferenceCount } from './processCheck';
+import { closeService } from './close';
 
 export async function executeCodeCommand(args: string[] = []) {
     // Service check is now handled in cli.ts
@@ -13,6 +14,9 @@ export async function executeCodeCommand(args: string[] = []) {
         API_TIMEOUT_MS: '600000'
     };
 
+    // Increment reference count when command starts
+    incrementReferenceCount();
+
     // Execute claude command
     const claudeProcess = spawn('claude', args, {
         env,
@@ -23,10 +27,13 @@ export async function executeCodeCommand(args: string[] = []) {
     claudeProcess.on('error', (error) => {
         console.error('Failed to start claude command:', error.message);
         console.log('Make sure Claude Code is installed: npm install -g @anthropic-ai/claude-code');
+        decrementReferenceCount();
         process.exit(1);
     });
 
     claudeProcess.on('close', (code) => {
+        decrementReferenceCount();
+        closeService()
         process.exit(code || 0);
     });
 }

src/utils/processCheck.ts

@@ -1,6 +1,32 @@
 import { existsSync, readFileSync, writeFileSync } from 'fs';
 import { PID_FILE } from '../constants';
 
+const REFERENCE_COUNT_FILE = '/tmp/claude-code-reference-count.txt';
+
+export function incrementReferenceCount() {
+    let count = 0;
+    if (existsSync(REFERENCE_COUNT_FILE)) {
+        count = parseInt(readFileSync(REFERENCE_COUNT_FILE, 'utf-8')) || 0;
+    }
+    count++;
+    writeFileSync(REFERENCE_COUNT_FILE, count.toString());
+}
+
+export function decrementReferenceCount() {
+    let count = 0;
+    if (existsSync(REFERENCE_COUNT_FILE)) {
+        count = parseInt(readFileSync(REFERENCE_COUNT_FILE, 'utf-8')) || 0;
+    }
+    count = Math.max(0, count - 1);
+    writeFileSync(REFERENCE_COUNT_FILE, count.toString());
+}
+
+export function getReferenceCount(): number {
+    if (!existsSync(REFERENCE_COUNT_FILE)) {
+        return 0;
+    }
+    return parseInt(readFileSync(REFERENCE_COUNT_FILE, 'utf-8')) || 0;
+}
 
 export function isServiceRunning(): boolean {
     if (!existsSync(PID_FILE)) {
@@ -55,6 +81,7 @@ export function getServiceInfo() {
         pid,
         port: 3456,
         endpoint: 'http://127.0.0.1:3456',
-        pidFile: PID_FILE
+        pidFile: PID_FILE,
+        referenceCount: getReferenceCount()
     };
 }