Add HTTP redirect following support

- Add followRedirects option in Transport (enabled by default)
- Add redirectCount to limit redirects to 3
- Detect and follow 301/302/307/308 redirects
- Add forceHttps parameter for redirect handling
- Log redirects when verbose mode is enabled

src/jsonrpc.ts

@@ -241,6 +241,7 @@ interface TransportOptions {
     connectTimeout?: number | undefined;
     timeout?: number | undefined;
     useHttps?: boolean;
+    followRedirects?: boolean;
 }
 
 interface JsonRpcRequest {
@@ -267,6 +268,8 @@ export class Transport {
     private connectTimeout: number;
     private timeout: number;
     private useHttps: boolean;
+    private followRedirects: boolean;
+    private redirectCount: number;
 
     constructor(options: TransportOptions = {}) {
         this.fingerprints = options.fingerprints || null;
@@ -276,6 +279,8 @@ export class Transport {
         this.connectTimeout = options.connectTimeout || CONNECT_TIMEOUT;
         this.timeout = options.timeout || DEFAULT_TIMEOUT;
         this.useHttps = options.useHttps || false;
+        this.followRedirects = options.followRedirects ?? true;
+        this.redirectCount = 0;
     }
 
     /**
@@ -291,6 +296,21 @@ export class Transport {
         handler: string,
         requestData: string,
         verbose: boolean = false
+    ): Promise<JsonRpcResponse> {
+        // Reset redirect count for each new request
+        this.redirectCount = 0;
+        return this.doRequest(host, handler, requestData, verbose);
+    }
+
+    /**
+     * Internal method to make HTTP request with redirect support
+     */
+    private async doRequest(
+        host: string,
+        handler: string,
+        requestData: string,
+        verbose: boolean = false,
+        forceHttps?: boolean
     ): Promise<JsonRpcResponse> {
         // Detect protocol based on port or explicit protocol
         const hostParts = host.split(":");
@@ -299,6 +319,7 @@ export class Transport {
 
         // Use HTTPS if explicitly configured, or for standard HTTPS ports
         const shouldUseHttps =
+            forceHttps === true ||
             this.useHttps ||
             port === 443 ||
             port === 8443 ||
@@ -364,6 +385,49 @@ export class Transport {
 
                 res.on("end", () => {
                     try {
+                        // Handle redirects BEFORE parsing response body
+                        const statusCode = res.statusCode;
+                        if (
+                            this.followRedirects &&
+                            statusCode &&
+                            this.redirectCount < 3 &&
+                            [301, 302, 307, 308].includes(statusCode)
+                        ) {
+                            const location = res.headers["location"];
+                            if (location) {
+                                this.redirectCount++;
+                                if (verbose) {
+                                    console.log(
+                                        `🔄 Redirect (${statusCode}): ${host}${handler} → ${location}`
+                                    );
+                                }
+
+                                try {
+                                    const redirectUrl = new URL(
+                                        location,
+                                        `http://${host}`
+                                    );
+                                    const newHost = redirectUrl.host;
+                                    const newUseHttps =
+                                        redirectUrl.protocol === "https:";
+
+                                    this.doRequest(
+                                        newHost,
+                                        handler,
+                                        requestData,
+                                        verbose,
+                                        newUseHttps
+                                    )
+                                        .then(resolve)
+                                        .catch(reject);
+                                    return;
+                                } catch (redirectError) {
+                                    reject(redirectError);
+                                    return;
+                                }
+                            }
+                        }
+
                         // Handle compression
                         const encoding = res.headers["content-encoding"];
                         let responseText: string;