initial echo server arch

1 files changed, 64 insertions, 0 deletions

diff --git a/src/client.c b/src/client.c
new file mode 100644
index 0000000..3d95287
--- /dev/null
+++ b/src/client.c
@@ -0,0 +1,64 @@
+#include <err.h>
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <netinet/in.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <netdb.h>
+
+int main()
+{
+	struct addrinfo hints;
+	memset(&hints, 0, sizeof(hints));
+	hints.ai_family = AF_INET;
+	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_flags = 0;
+	hints.ai_protocol = 0;
+
+	struct addrinfo *result;
+	int ret = getaddrinfo("127.0.0.1", "24242", &hints, &result);
+	if (ret == -1) {
+		err(EXIT_FAILURE, "failed getting addr info");
+	}
+
+	int tcp_sock = -1;
+
+	for (struct addrinfo *rp = result; rp != NULL; rp = rp->ai_next) {
+		int s = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+		if (s == -1)
+			continue;
+
+		if (connect(s, rp->ai_addr, rp->ai_addrlen) != -1) {
+			tcp_sock = s;
+			break;
+		}
+
+		close(s);
+	}
+
+	freeaddrinfo(result);
+	if (tcp_sock == -1) {
+		err(EXIT_FAILURE, "couldn't connect to socket");
+		return -1;
+	}
+
+	int c;
+	while ((c = fgetc(stdin)) != EOF) {
+		char cb = c;
+		int ret = write(tcp_sock, &cb, 1);
+		if (ret == -1) {
+			err(EXIT_FAILURE, "failed writing to socket");
+		}
+
+		ret = read(tcp_sock, &cb, 1);
+		if (ret == -1) {
+			err(EXIT_FAILURE, "failed reading from socket");
+		}
+
+		fprintf(stdout, "%c", cb);
+	}
+
+	close(tcp_sock);
+}