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DTLS MTU: check MTU on write

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This commit is contained in:
Sean Parkinson
2020-11-16 08:50:30 +10:00
parent e9f0cb234b
commit a00c75c51b
1 changed files with 10 additions and 2 deletions
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12
src/internal.c
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@ -30322,8 +30322,16 @@ int wolfSSL_GetMaxRecordSize(WOLFSSL* ssl, int maxFragment)
} }
#endif /* HAVE_MAX_FRAGMENT */ #endif /* HAVE_MAX_FRAGMENT */
#ifdef WOLFSSL_DTLS #ifdef WOLFSSL_DTLS
if (IsDtlsNotSctpMode(ssl) && (maxFragment > MAX_UDP_SIZE)) { if (IsDtlsNotSctpMode(ssl)) {
maxFragment = MAX_UDP_SIZE; if (maxFragment > MAX_UDP_SIZE) {
maxFragment = MAX_UDP_SIZE;
}
#if defined(WOLFSSL_DTLS_MTU)
if (maxFragment >
ssl->dtlsMtuSz - RECORD_HEADER_SZ - DTLS_RECORD_EXTRA) {
maxFragment = ssl->dtlsMtuSz - RECORD_HEADER_SZ - DTLS_RECORD_EXTRA;
}
#endif
} }
#endif #endif