basic TCP server on c

.gitattributes

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+* text=auto

README.md

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+# Redis Implementation in C
+
+
+
+**Note**: If you're viewing this repo on GitHub, head over to
+[codecrafters.io](https://codecrafters.io) to try the challenge.

app/server.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+
+int main() {
+	// Disable output buffering
+	setbuf(stdout, NULL);
+
+	// You can use print statements as follows for debugging, they'll be visible when running tests.
+	printf("Logs from your program will appear here!\n");
+
+	// Uncomment this block to pass the first stage
+	//
+	int server_fd, client_addr_len;
+	struct sockaddr_in client_addr;
+
+	server_fd = socket(AF_INET, SOCK_STREAM, 0);
+	if (server_fd == -1)
+	{
+		printf("Socket creation failed: %s...\n", strerror(errno));
+		return 1;
+	}
+
+	// Since the tester restarts your program quite often, setting REUSE_PORT
+	// ensures that we don't run into 'Address already in use' errors
+	int reuse = 1;
+	if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEPORT, &reuse, sizeof(reuse)) < 0)
+	{
+		printf("SO_REUSEPORT failed: %s \n", strerror(errno));
+		return 1;
+	}
+
+	struct sockaddr_in serv_addr = {
+		.sin_family = AF_INET,
+		.sin_port = htons(3000),
+		.sin_addr = {htonl(INADDR_ANY)},
+	};
+
+	if (bind(server_fd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) != 0)
+	{
+		printf("Bind failed: %s \n", strerror(errno));
+		return 1;
+	}
+
+	int connection_backlog = 5;
+	if (listen(server_fd, connection_backlog) != 0)
+	{
+		printf("Listen failed: %s \n", strerror(errno));
+		return 1;
+	}
+
+	printf("Waiting for a client to connect...\n");
+	client_addr_len = sizeof(client_addr);
+
+	int conn = accept(server_fd, (struct sockaddr *)&client_addr, &client_addr_len);
+	printf("Client connected\n");
+
+	while (conn != -1)
+	{
+		// Read the request
+		char request[1024];
+		read(conn, request, 1024);
+
+		printf("Request: %s\n", request);
+
+		// Send the response
+		char response[1024] = "+PONG\r\n";
+		write(conn, response, strlen(response));
+	}
+
+	printf("Client disconnected\n");
+	close(conn);
+
+	printf("Waiting for a client to connect...\n");
+	conn = accept(server_fd, (struct sockaddr *)&client_addr, &client_addr_len);
+
+	return 0;
+}

spawn_redis_server.sh

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+#!/bin/sh
+
+set -e
+tmpFile=$(mktemp)
+gcc app/*.c -o $tmpFile
+exec $tmpFile "$@"