MEDIUM: frontend: move the fd-specific settings to session_accept_fd()

The frontend is generic and does not depend on a file descriptor,
so applying some socket options to the incoming fd is not its role.
Let's move the setsockopt() calls earlier in session_accept_fd()
where others are done as well.
diff --git a/src/frontend.c b/src/frontend.c
index b7f4e19..bb4383b 100644
--- a/src/frontend.c
+++ b/src/frontend.c
@@ -60,38 +60,6 @@
 
 	int cfd = conn->t.sock.fd;
 
-	/* Adjust some socket options */
-	if (l->addr.ss_family == AF_INET || l->addr.ss_family == AF_INET6) {
-		if (setsockopt(cfd, IPPROTO_TCP, TCP_NODELAY,
-			       (char *) &one, sizeof(one)) == -1)
-			goto out_return;
-
-		if (fe->options & PR_O_TCP_CLI_KA)
-			setsockopt(cfd, SOL_SOCKET, SO_KEEPALIVE,
-				   (char *) &one, sizeof(one));
-
-		if (fe->options & PR_O_TCP_NOLING)
-			fdtab[cfd].linger_risk = 1;
-
-#if defined(TCP_MAXSEG)
-		if (l->maxseg < 0) {
-			/* we just want to reduce the current MSS by that value */
-			int mss;
-			socklen_t mss_len = sizeof(mss);
-			if (getsockopt(cfd, IPPROTO_TCP, TCP_MAXSEG, &mss, &mss_len) == 0) {
-				mss += l->maxseg; /* remember, it's < 0 */
-				setsockopt(cfd, IPPROTO_TCP, TCP_MAXSEG, &mss, sizeof(mss));
-			}
-		}
-#endif
-	}
-
-	if (global.tune.client_sndbuf)
-		setsockopt(cfd, SOL_SOCKET, SO_SNDBUF, &global.tune.client_sndbuf, sizeof(global.tune.client_sndbuf));
-
-	if (global.tune.client_rcvbuf)
-		setsockopt(cfd, SOL_SOCKET, SO_RCVBUF, &global.tune.client_rcvbuf, sizeof(global.tune.client_rcvbuf));
-
 	if (unlikely(fe->nb_req_cap > 0)) {
 		if ((s->req_cap = pool_alloc2(fe->req_cap_pool)) == NULL)
 			goto out_return;	/* no memory */
diff --git a/src/session.c b/src/session.c
index 6dcbadb..247e492 100644
--- a/src/session.c
+++ b/src/session.c
@@ -166,6 +166,35 @@
 		goto out_free_sess;
 	}
 
+	/* Adjust some socket options */
+	if (l->addr.ss_family == AF_INET || l->addr.ss_family == AF_INET6) {
+		setsockopt(cfd, IPPROTO_TCP, TCP_NODELAY, (char *) &one, sizeof(one));
+
+		if (p->options & PR_O_TCP_CLI_KA)
+			setsockopt(cfd, SOL_SOCKET, SO_KEEPALIVE, (char *) &one, sizeof(one));
+
+		if (p->options & PR_O_TCP_NOLING)
+			fdtab[cfd].linger_risk = 1;
+
+#if defined(TCP_MAXSEG)
+		if (l->maxseg < 0) {
+			/* we just want to reduce the current MSS by that value */
+			int mss;
+			socklen_t mss_len = sizeof(mss);
+			if (getsockopt(cfd, IPPROTO_TCP, TCP_MAXSEG, &mss, &mss_len) == 0) {
+				mss += l->maxseg; /* remember, it's < 0 */
+				setsockopt(cfd, IPPROTO_TCP, TCP_MAXSEG, &mss, sizeof(mss));
+			}
+		}
+#endif
+	}
+
+	if (global.tune.client_sndbuf)
+		setsockopt(cfd, SOL_SOCKET, SO_SNDBUF, &global.tune.client_sndbuf, sizeof(global.tune.client_sndbuf));
+
+	if (global.tune.client_rcvbuf)
+		setsockopt(cfd, SOL_SOCKET, SO_RCVBUF, &global.tune.client_rcvbuf, sizeof(global.tune.client_rcvbuf));
+
 	if (unlikely((t = task_new()) == NULL))
 		goto out_free_sess;