Connectivity check

1 files changed, 20 insertions, 5 deletions

diff --git a/src/core/lib/iomgr/tcp_client_posix.c b/src/core/lib/iomgr/tcp_client_posix.c
index 6430cb629f..e93d5734a0 100644
--- a/src/core/lib/iomgr/tcp_client_posix.c
+++ b/src/core/lib/iomgr/tcp_client_posix.c
@@ -211,11 +211,11 @@ finish:
   grpc_exec_ctx_enqueue(exec_ctx, closure, *ep != NULL, NULL);
 }
 
-void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
-                             grpc_endpoint **ep,
-                             grpc_pollset_set *interested_parties,
-                             const struct sockaddr *addr, size_t addr_len,
-                             gpr_timespec deadline) {
+static void tcp_client_connect_impl(grpc_exec_ctx *exec_ctx,
+                                    grpc_closure *closure, grpc_endpoint **ep,
+                                    grpc_pollset_set *interested_parties,
+                                    const struct sockaddr *addr,
+                                    size_t addr_len, gpr_timespec deadline) {
   int fd;
   grpc_dualstack_mode dsmode;
   int err;
@@ -303,4 +303,19 @@ done:
   gpr_free(addr_str);
 }
 
+// overridden by api_fuzzer.c
+void (*grpc_tcp_client_connect_impl)(
+    grpc_exec_ctx *exec_ctx, grpc_closure *closure, grpc_endpoint **ep,
+    grpc_pollset_set *interested_parties, const struct sockaddr *addr,
+    size_t addr_len, gpr_timespec deadline) = tcp_client_connect_impl;
+
+void grpc_tcp_client_connect(grpc_exec_ctx *exec_ctx, grpc_closure *closure,
+                             grpc_endpoint **ep,
+                             grpc_pollset_set *interested_parties,
+                             const struct sockaddr *addr, size_t addr_len,
+                             gpr_timespec deadline) {
+  grpc_tcp_client_connect_impl(exec_ctx, closure, ep, interested_parties, addr,
+                               addr_len, deadline);
+}
+
 #endif