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system/node_modules/ethers/lib.commonjs/providers/provider-ipcsocket.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.IpcSocketProvider = void 0;
+const net_1 = require("net");
+const provider_socket_js_1 = require("./provider-socket.js");
+// @TODO: Is this sufficient? Is this robust? Will newlines occur between
+// all payloads and only between payloads?
+function splitBuffer(data) {
+    const messages = [];
+    let lastStart = 0;
+    while (true) {
+        const nl = data.indexOf(10, lastStart);
+        if (nl === -1) {
+            break;
+        }
+        messages.push(data.subarray(lastStart, nl).toString().trim());
+        lastStart = nl + 1;
+    }
+    return { messages, remaining: data.subarray(lastStart) };
+}
+/**
+ *  An **IpcSocketProvider** connects over an IPC socket on the host
+ *  which provides fast access to the node, but requires the node and
+ *  the script run on the same machine.
+ */
+class IpcSocketProvider extends provider_socket_js_1.SocketProvider {
+    #socket;
+    /**
+     *  The connected socket.
+     */
+    get socket() { return this.#socket; }
+    constructor(path, network, options) {
+        super(network, options);
+        this.#socket = (0, net_1.connect)(path);
+        this.socket.on("ready", async () => {
+            try {
+                await this._start();
+            }
+            catch (error) {
+                console.log("failed to start IpcSocketProvider", error);
+                // @TODO: Now what? Restart?
+            }
+        });
+        let response = Buffer.alloc(0);
+        this.socket.on("data", (data) => {
+            response = Buffer.concat([response, data]);
+            const { messages, remaining } = splitBuffer(response);
+            messages.forEach((message) => {
+                this._processMessage(message);
+            });
+            response = remaining;
+        });
+        this.socket.on("end", () => {
+            this.emit("close");
+            this.socket.destroy();
+            this.socket.end();
+        });
+    }
+    destroy() {
+        this.socket.destroy();
+        this.socket.end();
+        super.destroy();
+    }
+    async _write(message) {
+        if (!message.endsWith("\n")) {
+            message += "\n";
+        }
+        this.socket.write(message);
+    }
+}
+exports.IpcSocketProvider = IpcSocketProvider;
+//# sourceMappingURL=provider-ipcsocket.js.map