Copied TCP impl from other project, basic Block implementation, randomx pow, signing via secp256k1

include/tcpd/tcpclient.h

@@ -0,0 +1,29 @@
+#ifndef TCPCLIENT_H
+#define TCPCLIENT_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <arpa/inet.h>
+#include <pthread.h>
+#include <stdint.h>
+#include <dynarr.h>
+
+#define MTU 1500
+
+struct TcpClient {
+    int clientFd;
+    struct sockaddr_in clientAddr;
+    uint32_t clientId;
+
+    unsigned char dataBuf[MTU];
+    ssize_t dataBufLen;
+    void (*on_data)(struct TcpClient* client);
+    void (*on_disconnect)(struct TcpClient* client);
+
+    pthread_t clientThread;
+};
+
+typedef struct TcpClient TcpClient;
+
+#endif