sock_inet

socket_inet/server.c

@@ -0,0 +1,73 @@
+#include <netdb.h>
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#define MAX  80
+#define PORT 8080
+
+void func(int connfd) {
+    char buff[MAX];
+
+    for (;;) {
+        bzero(buff, MAX);
+
+        ssize_t recv_n = recv(connfd, buff, sizeof(buff), 0);
+        if (recv_n >= MAX) {
+            /* Likely more data, realloc */
+        }
+
+        buff[recv_n - 1] = '\0';
+        printf("From client: %s\n", buff);
+        bzero(buff, MAX);
+
+        char *msg = "Hello!\n";
+        send(connfd, msg, strlen(msg), 0);
+
+        if (strncmp("exit", buff, 4) == 0) {
+            printf("Server Exit...\n");
+            break;
+        }
+    }
+}
+
+int main() {
+    int sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    if (sockfd == -1) {
+        printf("socket creation failed...\n");
+        exit(0);
+    }
+
+    struct sockaddr_in servaddr;
+    bzero(&servaddr, sizeof(servaddr));
+
+    servaddr.sin_family = AF_INET;
+    servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
+    servaddr.sin_port = htons(PORT);
+
+    if ((bind(sockfd, (struct sockaddr *)&servaddr, sizeof(servaddr))) != 0) {
+        printf("socket bind failed...\n");
+        exit(0);
+    }
+
+    if ((listen(sockfd, 5)) != 0) {
+        printf("Listen failed...\n");
+        exit(0);
+    }
+
+    struct sockaddr_in cli;
+    socklen_t          len = sizeof(cli);
+
+    int connfd = accept(sockfd, (struct sockaddr *)&cli, &len);
+    if (connfd < 0) {
+        printf("server accept failed...\n");
+        exit(0);
+    }
+
+    func(connfd);
+    close(sockfd);
+}