1 files changed, 109 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_USING_C/11.2.c b/reference/C/CONTRIB/OR_USING_C/11.2.c
new file mode 100644
index 0000000..18140aa
--- /dev/null
+++ b/reference/C/CONTRIB/OR_USING_C/11.2.c
@@ -0,0 +1,109 @@
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <stdio.h>
+
+#define NSTRS       3           /* no. of strings  */
+#define ADDRESS     "mysocket"  /* addr to connect */
+
+/*
+ * Strings we send to the client.
+ */
+char *strs[NSTRS] = {
+    "This is the first string from the server.\n",
+    "This is the second string from the server.\n",
+    "This is the third string from the server.\n"
+};
+
+main()
+{
+    char c;
+    FILE *fp;
+    int fromlen;
+    register int i, s, ns, len;
+    struct sockaddr_un saun, fsaun;
+
+    /*
+     * Get a socket to work with.  This socket will
+     * be in the UNIX domain, and will be a
+     * stream socket.
+     */
+    if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
+        perror("server: socket");
+        exit(1);
+    }
+
+    /*
+     * Create the address we will be binding to.
+     */
+    saun.sun_family = AF_UNIX;
+    strcpy(saun.sun_path, ADDRESS);
+
+    /*
+     * Try to bind the address to the socket.  We
+     * unlink the name first so that the bind won't
+     * fail.
+     *
+     * The third argument indicates the "length" of
+     * the structure, not just the length of the
+     * socket name.
+     */
+    unlink(ADDRESS);
+    len = sizeof(saun.sun_family) + strlen(saun.sun_path);
+
+    if (bind(s, &saun, len) < 0) {
+        perror("server: bind");
+        exit(1);
+    }
+
+    /*
+     * Listen on the socket.
+     */
+    if (listen(s, 5) < 0) {
+        perror("server: listen");
+        exit(1);
+    }
+
+    /*
+     * Accept connections.  When we accept one, ns
+     * will be connected to the client.  fsaun will
+     * contain the address of the client.
+     */
+    if ((ns = accept(s, &fsaun, &fromlen)) < 0) {
+        perror("server: accept");
+        exit(1);
+    }
+
+    /*
+     * We'll use stdio for reading the socket.
+     */
+    fp = fdopen(ns, "r");
+
+    /*
+     * First we send some strings to the client.
+     */
+    for (i = 0; i < NSTRS; i++)
+        send(ns, strs[i], strlen(strs[i]), 0);
+
+    /*
+     * Then we read some strings from the client and
+     * print them out.
+     */
+    for (i = 0; i < NSTRS; i++) {
+        while ((c = fgetc(fp)) != EOF) {
+            putchar(c);
+
+            if (c == '\n')
+                break;
+        }
+    }
+
+    /*
+     * We can simply use close() to terminate the
+     * connection, since we're done with both sides.
+     */
+    close(s);
+
+    exit(0);
+}
+