From 829dcecb85edbc815dcb009083221cb6a05ddd8a Mon Sep 17 00:00:00 2001
From: Max Christian Pohle
Date: Mon, 18 Jan 2021 00:49:03 +0100
Subject: Implemented a server

---
 main.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 main.c

diff --git a/main.c b/main.c
new file mode 100644
index 0000000..18e33f5
--- /dev/null
+++ b/main.c
@@ -0,0 +1,68 @@
+#include <netinet/in.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <err.h>
+#include <errno.h>
+
+#include <pthread.h>
+
+void * next_customer(int new_socket)
+{
+  char *hello = "Hello from server";
+  char buffer[1024] = {0};
+  int valread = read(new_socket, buffer, 1024);
+  printf("%s %d\n", buffer, valread);
+
+  send(new_socket, hello, strlen(hello), 0);
+
+  printf("Hello message sent\n");
+  return NULL;
+}
+
+void serve(int server_fd)
+{
+  struct sockaddr_in address;
+  int addrlen = sizeof(address);
+  warn("waiting for connections on %d", server_fd);
+
+  for(int new_socket = 0
+      ; 1 ; new_socket=accept(server_fd, (struct sockaddr*) &address, (socklen_t*) &addrlen))
+  {
+    warn("next: %d", new_socket);
+    // next_customer(new_socket);
+    pthread_t thread_id;
+    pthread_create(&thread_id, NULL, next_customer, new_socket);
+    pthread_join(thread_id, NULL);
+  }
+}
+
+#define PORT 8080
+int main(int argc, char const *argv[]) 
+{
+  int server_fd;
+  int opt = 1;
+
+  struct sockaddr_in address;
+  address.sin_family = AF_INET;
+  address.sin_addr.s_addr = INADDR_ANY;
+  address.sin_port = htons(PORT);
+
+  0 == (server_fd = socket(AF_INET, SOCK_STREAM, 0))
+    ? err(EXIT_FAILURE, NULL)
+  : setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt))
+    ? err(EXIT_FAILURE, "setsockopt failed on socket with fileno %d", server_fd)
+  : bind(server_fd, (struct sockaddr*) &address, sizeof(address))
+    ? err(EXIT_FAILURE, NULL)
+  : listen(server_fd, 3)
+    ? err(EXIT_FAILURE, NULL)
+  : serve(server_fd);
+
+
+  return 0;
+}
+
+// vim: shiftwidth=2 tabstop=2 number
-- 
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