First commit

tcpcli.c

@@ -0,0 +1,38 @@
+#include "tcpcli.h"
+
+int tcp_connect(const char *host, const char *port) {
+	int sock = -1;
+	struct addrinfo hints, *res;
+
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_family = AF_INET;		// AF_INET, AF_INET6 or AF_UNSPEC
+	hints.ai_socktype = SOCK_STREAM;
+
+	if (getaddrinfo(host, port, &hints, &res) == 0) {
+		if ((sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol)) != -1)
+			if (connect(sock, res->ai_addr, res->ai_addrlen) == -1) {
+				close(sock);
+				sock = -1;
+			}
+		freeaddrinfo(res);
+	}
+
+	return sock;
+}
+
+void tcp_close(int sock) {
+	close(sock);
+}
+
+int tcp_send(int sock, const char *str) {
+	return send(sock, str, strlen(str), 0);
+}
+
+int tcp_receive(int sock, char *buffer, unsigned int size) {
+	ssize_t n;
+
+	if ((n = recv(sock, buffer, size - 1, 0)) >= 0)
+		buffer[n] = '\0';		// Terminate string.
+
+	return n;
+}