Fix compilation warnings, bugs, and crashes found on Windows.

This addresses a number of problems that were found on Windows,
including one bug that actually turned up in testing on POSIX.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/supplemental/mbedtls/tls.c b/src/supplemental/mbedtls/tls.c
index 94503df5..d64447ac 100644
--- a/src/supplemental/mbedtls/tls.c
+++ b/src/supplemental/mbedtls/tls.c
@@ -76,11 +76,11 @@ struct nni_tls {
 	bool                tls_closed; // upper TLS layer closed
 	bool                tcp_closed; // underlying TCP buffer closed
 	uint8_t *           sendbuf;    // send buffer
-	int                 sendlen;    // amount of data in send buffer
-	int                 sendoff;    // offset of start of send data
+	size_t              sendlen;    // amount of data in send buffer
+	size_t              sendoff;    // offset of start of send data
 	uint8_t *           recvbuf;    // recv buffer
-	int                 recvlen;    // amount of data in recv buffer
-	int                 recvoff;    // offset of start of recv data
+	size_t              recvlen;    // amount of data in recv buffer
+	size_t              recvoff;    // offset of start of recv data
 	nni_list            sends;      // upper side sends
 	nni_list            recvs;      // upper recv aios
 	nni_aio *           handshake;  // handshake aio (upper)