diff --git a/ssl/d1_pkt.c b/ssl/d1_pkt.c
index 31d9dc0a..27b2763a 100644
--- a/ssl/d1_pkt.c
+++ b/ssl/d1_pkt.c
@@ -331,7 +331,7 @@ void dtls1_read_close_notify(SSL *ssl) {
   }
 }
 
-int dtls1_write_app_data(SSL *ssl, const void *buf_, int len) {
+int dtls1_write_app_data(SSL *ssl, const uint8_t *buf, int len) {
   assert(!SSL_in_init(ssl));
 
   if (len > SSL3_RT_MAX_PLAIN_LENGTH) {
@@ -348,7 +348,7 @@ int dtls1_write_app_data(SSL *ssl, const void *buf_, int len) {
     return 0;
   }
 
-  int ret = dtls1_write_record(ssl, SSL3_RT_APPLICATION_DATA, buf_, (size_t)len,
+  int ret = dtls1_write_record(ssl, SSL3_RT_APPLICATION_DATA, buf, (size_t)len,
                                dtls1_use_current_epoch);
   if (ret <= 0) {
     return ret;
diff --git a/ssl/internal.h b/ssl/internal.h
index cba14cdd..544259c0 100644
--- a/ssl/internal.h
+++ b/ssl/internal.h
@@ -1319,11 +1319,11 @@ struct ssl_protocol_method_st {
    * and sets |*out_got_handshake| to whether the failure was due to a
    * post-handshake handshake message. If so, it fills in the current message as
    * in |ssl_get_message|. */
-  int (*read_app_data)(SSL *ssl, int *out_got_handshake,  uint8_t *buf, int len,
+  int (*read_app_data)(SSL *ssl, int *out_got_handshake, uint8_t *buf, int len,
                        int peek);
   int (*read_change_cipher_spec)(SSL *ssl);
   void (*read_close_notify)(SSL *ssl);
-  int (*write_app_data)(SSL *ssl, const void *buf_, int len);
+  int (*write_app_data)(SSL *ssl, const uint8_t *buf, int len);
   int (*dispatch_alert)(SSL *ssl);
   /* supports_cipher returns one if |cipher| is supported by this protocol and
    * zero otherwise. */
@@ -1796,8 +1796,7 @@ int ssl3_read_app_data(SSL *ssl, int *out_got_handshake, uint8_t *buf, int len,
 int ssl3_read_change_cipher_spec(SSL *ssl);
 void ssl3_read_close_notify(SSL *ssl);
 int ssl3_read_handshake_bytes(SSL *ssl, uint8_t *buf, int len);
-int ssl3_write_app_data(SSL *ssl, const void *buf, int len);
-int ssl3_write_bytes(SSL *ssl, int type, const void *buf, int len);
+int ssl3_write_app_data(SSL *ssl, const uint8_t *buf, int len);
 int ssl3_output_cert_chain(SSL *ssl);
 
 int ssl3_new(SSL *ssl);
@@ -1838,7 +1837,7 @@ int dtls1_read_app_data(SSL *ssl, int *out_got_handshake, uint8_t *buf, int len,
 int dtls1_read_change_cipher_spec(SSL *ssl);
 void dtls1_read_close_notify(SSL *ssl);
 
-int dtls1_write_app_data(SSL *ssl, const void *buf, int len);
+int dtls1_write_app_data(SSL *ssl, const uint8_t *buf, int len);
 
 /* dtls1_write_record sends a record. It returns one on success and <= 0 on
  * error. */
diff --git a/ssl/s3_pkt.c b/ssl/s3_pkt.c
index 84f52b56..5d5b7e83 100644
--- a/ssl/s3_pkt.c
+++ b/ssl/s3_pkt.c
@@ -188,16 +188,9 @@ again:
   return -1;
 }
 
-int ssl3_write_app_data(SSL *ssl, const void *buf, int len) {
+int ssl3_write_app_data(SSL *ssl, const uint8_t *buf, int len) {
   assert(!SSL_in_init(ssl) || SSL_in_false_start(ssl));
 
-  return ssl3_write_bytes(ssl, SSL3_RT_APPLICATION_DATA, buf, len);
-}
-
-/* Call this to write data in records of type |type|. It will return <= 0 if
- * not all data has been sent or non-blocking IO. */
-int ssl3_write_bytes(SSL *ssl, int type, const void *buf_, int len) {
-  const uint8_t *buf = buf_;
   unsigned tot, n, nw;
 
   assert(ssl->s3->wnum <= INT_MAX);
@@ -216,7 +209,7 @@ int ssl3_write_bytes(SSL *ssl, int type, const void *buf_, int len) {
     return -1;
   }
 
-  n = (len - tot);
+  n = len - tot;
   for (;;) {
     /* max contains the maximum number of bytes that we can put into a
      * record. */
@@ -227,14 +220,13 @@ int ssl3_write_bytes(SSL *ssl, int type, const void *buf_, int len) {
       nw = n;
     }
 
-    int ret = do_ssl3_write(ssl, type, &buf[tot], nw);
+    int ret = do_ssl3_write(ssl, SSL3_RT_APPLICATION_DATA, &buf[tot], nw);
     if (ret <= 0) {
       ssl->s3->wnum = tot;
       return ret;
     }
 
-    if (ret == (int)n || (type == SSL3_RT_APPLICATION_DATA &&
-                          (ssl->mode & SSL_MODE_ENABLE_PARTIAL_WRITE))) {
+    if (ret == (int)n || (ssl->mode & SSL_MODE_ENABLE_PARTIAL_WRITE)) {
       return tot + ret;
     }