diff --git a/src/core/iomgr/resolve_address.h b/src/core/iomgr/resolve_address.h
index 37ec0f03350..7b537b17674 100644
--- a/src/core/iomgr/resolve_address.h
+++ b/src/core/iomgr/resolve_address.h
@@ -34,10 +34,12 @@
 #ifndef __GRPC_INTERNAL_IOMGR_RESOLVE_ADDRESS_H__
 #define __GRPC_INTERNAL_IOMGR_RESOLVE_ADDRESS_H__
 
-#include <sys/socket.h>
+#include <stddef.h>
+
+#define GRPC_MAX_SOCKADDR_SIZE 128
 
 typedef struct {
-  struct sockaddr_storage addr;
+  char addr[GRPC_MAX_SOCKADDR_SIZE];
   int len;
 } grpc_resolved_address;
 
diff --git a/src/core/iomgr/socket_utils_common_posix.c b/src/core/iomgr/socket_utils_common_posix.c
index d65b025d700..4b1ae3d4c76 100644
--- a/src/core/iomgr/socket_utils_common_posix.c
+++ b/src/core/iomgr/socket_utils_common_posix.c
@@ -31,6 +31,10 @@
  *
  */
 
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_SOCKET
+
 #include "src/core/iomgr/socket_utils_posix.h"
 
 #include <arpa/inet.h>
@@ -187,3 +191,5 @@ int grpc_create_dualstack_socket(const struct sockaddr *addr, int type,
   *dsmode = family == AF_INET ? GRPC_DSMODE_IPV4 : GRPC_DSMODE_NONE;
   return socket(family, type, protocol);
 }
+
+#endif
diff --git a/src/core/iomgr/tcp_client_posix.c b/src/core/iomgr/tcp_client_posix.c
index d675c2dcece..851530ce685 100644
--- a/src/core/iomgr/tcp_client_posix.c
+++ b/src/core/iomgr/tcp_client_posix.c
@@ -31,6 +31,10 @@
  *
  */
 
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_SOCKET
+
 #include "src/core/iomgr/tcp_client.h"
 
 #include <errno.h>
@@ -229,3 +233,5 @@ void grpc_tcp_client_connect(void (*cb)(void *arg, grpc_endpoint *ep),
   grpc_alarm_init(&ac->alarm, deadline, on_alarm, ac, gpr_now());
   grpc_fd_notify_on_write(ac->fd, on_writable, ac);
 }
+
+#endif
diff --git a/src/core/iomgr/tcp_posix.c b/src/core/iomgr/tcp_posix.c
index 657f34aaf99..64996bd07d1 100644
--- a/src/core/iomgr/tcp_posix.c
+++ b/src/core/iomgr/tcp_posix.c
@@ -31,6 +31,10 @@
  *
  */
 
+#include <grpc/support/port_platform.h>
+
+#ifdef GPR_POSIX_SOCKET
+
 #include "src/core/iomgr/tcp_posix.h"
 
 #include <errno.h>
@@ -539,3 +543,5 @@ grpc_endpoint *grpc_tcp_create(grpc_fd *em_fd, size_t slice_size) {
   tcp->em_fd = em_fd;
   return &tcp->base;
 }
+
+#endif
diff --git a/src/core/iomgr/tcp_server.h b/src/core/iomgr/tcp_server.h
index 8ffd7d3569e..7923963ad9e 100644
--- a/src/core/iomgr/tcp_server.h
+++ b/src/core/iomgr/tcp_server.h
@@ -34,9 +34,6 @@
 #ifndef __GRPC_INTERNAL_IOMGR_TCP_SERVER_H__
 #define __GRPC_INTERNAL_IOMGR_TCP_SERVER_H__
 
-#include <sys/types.h>
-#include <sys/socket.h>
-
 #include "src/core/iomgr/endpoint.h"
 
 /* Forward decl of grpc_tcp_server */
diff --git a/src/core/iomgr/tcp_server_posix.c b/src/core/iomgr/tcp_server_posix.c
index 5762eb8a970..9f8e1db7b50 100644
--- a/src/core/iomgr/tcp_server_posix.c
+++ b/src/core/iomgr/tcp_server_posix.c
@@ -31,6 +31,10 @@
  *
  */
 
+#include <grpc/support/port_platform.h>
+
+#ifdef GRPC_POSIX_SOCKET
+
 #define _GNU_SOURCE
 #include "src/core/iomgr/tcp_server.h"
 
@@ -364,3 +368,5 @@ void grpc_tcp_server_start(grpc_tcp_server *s, grpc_pollset *pollset,
   }
   gpr_mu_unlock(&s->mu);
 }
+
+#endif
diff --git a/src/core/transport/chttp2/frame_data.c b/src/core/transport/chttp2/frame_data.c
index c22a2237370..00b020b31b1 100644
--- a/src/core/transport/chttp2/frame_data.c
+++ b/src/core/transport/chttp2/frame_data.c
@@ -141,7 +141,7 @@ grpc_chttp2_parse_error grpc_chttp2_data_parser_parse(
                             gpr_slice_sub(slice, cur - beg, end - beg));
         p->state = GRPC_CHTTP2_DATA_FH_0;
         return GRPC_CHTTP2_PARSE_OK;
-      } else if (end - cur > p->frame_size) {
+      } else if ((gpr_uint32)(end - cur) > p->frame_size) {
         state->need_flush_reads = 1;
         grpc_sopb_add_slice(
             &p->incoming_sopb,
diff --git a/src/core/transport/chttp2/hpack_parser.c b/src/core/transport/chttp2/hpack_parser.c
index 07b0f81098c..64e08ffac72 100644
--- a/src/core/transport/chttp2/hpack_parser.c
+++ b/src/core/transport/chttp2/hpack_parser.c
@@ -1212,7 +1212,7 @@ static int huff_nibble(grpc_chttp2_hpack_parser *p, gpr_uint8 nibble) {
   gpr_int16 next = next_sub_tbl[16 * next_tbl[p->huff_state] + nibble];
   if (emit != -1) {
     if (emit >= 0 && emit < 256) {
-      gpr_uint8 c = emit;
+      gpr_uint8 c = (gpr_uint8) emit;
       if (!append_string(p, &c, (&c) + 1)) return 0;
     } else {
       assert(emit == 256);
diff --git a/src/core/transport/chttp2_transport.c b/src/core/transport/chttp2_transport.c
index e61afb71ae8..17b37d6d4ae 100644
--- a/src/core/transport/chttp2_transport.c
+++ b/src/core/transport/chttp2_transport.c
@@ -1611,7 +1611,7 @@ static int process_read(transport *t, gpr_slice slice) {
         }
         t->deframe_state = DTS_FH_0;
         return 1;
-      } else if (end - cur > t->incoming_frame_size) {
+      } else if ((gpr_uint32)(end - cur) > t->incoming_frame_size) {
         if (!parse_frame_slice(
                 t, gpr_slice_sub_no_ref(slice, cur - beg,
                                         cur + t->incoming_frame_size - beg),
diff --git a/src/core/transport/stream_op.c b/src/core/transport/stream_op.c
index c77c8cde1f1..555543fc4b8 100644
--- a/src/core/transport/stream_op.c
+++ b/src/core/transport/stream_op.c
@@ -63,7 +63,7 @@ void grpc_sopb_reset(grpc_stream_op_buffer *sopb) {
 }
 
 void grpc_stream_ops_unref_owned_objects(grpc_stream_op *ops, size_t nops) {
-  int i;
+  size_t i;
   for (i = 0; i < nops; i++) {
     switch (ops[i].type) {
       case GRPC_OP_SLICE:
diff --git a/test/core/transport/transport_end2end_tests.c b/test/core/transport/transport_end2end_tests.c
index 712081bc8ab..5d26ef53b90 100644
--- a/test/core/transport/transport_end2end_tests.c
+++ b/test/core/transport/transport_end2end_tests.c
@@ -129,7 +129,8 @@ static void expect_metadata(test_stream *s, int from_client, const char *key,
 /* Convert some number of seconds into a gpr_timespec that many seconds in the
    future */
 static gpr_timespec deadline_from_seconds(double deadline_seconds) {
-  return gpr_time_add(gpr_now(), gpr_time_from_micros(deadline_seconds * 1e6));
+  return gpr_time_add(gpr_now(), 
+                      gpr_time_from_micros((long)(deadline_seconds * 1e6)));
 }
 
 /* Init a test_user_data instance */
@@ -573,7 +574,7 @@ static grpc_transport_setup_result setup_client_transport(
      name   - the name of this test */
 static void begin_test(test_fixture *f, grpc_transport_test_config *config,
                        const char *name) {
-  gpr_timespec timeout = gpr_time_add(gpr_now(), gpr_time_from_micros(100e6));
+  gpr_timespec timeout = gpr_time_add(gpr_now(), gpr_time_from_seconds(100));
 
   gpr_log(GPR_INFO, "BEGIN: %s/%s", name, config->name);
 
diff --git a/test/core/util/test_config.c b/test/core/util/test_config.c
index 6df86b593f4..5f3b55da75b 100644
--- a/test/core/util/test_config.c
+++ b/test/core/util/test_config.c
@@ -48,8 +48,10 @@ static int seed(void) { return _getpid(); }
 #endif
 
 void grpc_test_init(int argc, char **argv) {
+#ifndef GPR_WIN32
   /* disable SIGPIPE */
   signal(SIGPIPE, SIG_IGN);
+#endif
   /* seed rng with pid, so we don't end up with the same random numbers as a
      concurrently running test binary */
   srand(seed());