First commit

ch1/TCPServerUtility.c

@@ -0,0 +1,29 @@
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include "Practical.h"
+
+void HandleTCPClient(const int client_sock) {
+    char buffer[BUFSIZE];
+
+    ssize_t num_bytes_rcvd = recv(client_sock, buffer, BUFSIZE, 0);
+    if (num_bytes_rcvd < 0) {
+        DieWithSystemMessage("recv() failed");
+    }
+
+    while (num_bytes_rcvd > 0) {
+        ssize_t num_bytes_sent = send(client_sock, buffer, num_bytes_rcvd, 0);
+        if (num_bytes_sent < 0) {
+            DieWithSystemMessage("send() failed");
+        } else if (num_bytes_sent != num_bytes_rcvd) {
+            DieWithUserMessage("send()", "sent unexpected number of bytes");
+        }
+
+        num_bytes_rcvd = recv(client_sock, buffer, BUFSIZE, 0);
+        if (num_bytes_rcvd < 0) {
+            DieWithSystemMessage("recv() failed");
+        }
+    }
+
+    close(client_sock);
+}