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<a href="https://gitlab.com/berrange">Daniel P. Berrangé</a>
commented on a
<a href="https://gitlab.com/gnutls/gnutls/-/issues/1470#note_1308870699">discussion</a>:
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<p dir="auto" style="color: #333238; margin: 0 0 16px;" align="initial">I concur, the lines</p>
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<pre lang="plaintext" class="code highlight js-syntax-highlight language-plaintext" data-canonical-lang="" v-pre="true" style='display: block; font-size: 0.875rem; color: #333238; line-height: 1.6em; overflow-x: auto; border-radius: 4px; position: relative; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; word-break: break-all; word-wrap: break-word; background-color: #fbfafd; margin: 0 0 16px; padding: 12px; border: 1px solid #dcdcde;'><code style='font-size: 0.875rem; color: inherit; word-wrap: normal; word-break: keep-all; background-color: inherit; border-radius: 4px; white-space: pre; margin-top: 0; font-family: var(--default-mono-font, "Menlo"),"DejaVu Sans Mono","Liberation Mono","Consolas","Ubuntu Mono","Courier New","andale mono","lucida console",monospace; overflow-wrap: normal; padding: unset;'><span id="LC1" class="line" lang="plaintext" style="margin-top: 0;"> case EINTR:</span>
<span id="LC2" class="line" lang="plaintext"> return GNUTLS_E_INTERRUPTED;</span>
<span id="LC3" class="line" lang="plaintext"> case EAGAIN:</span>
<span id="LC4" class="line" lang="plaintext"> return GNUTLS_E_AGAIN;</span></code></pre>
<copy-code></copy-code>
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<p dir="auto" style="color: #333238; margin: 0;" align="initial">both have broken semantics AFAICT. Those two error codes must <em style="margin-top: 0;">ONLY</em> be returned if 'data_size == 0', otherwise the caller has no knowledge of fact that some bytes were successfully sent.</p>
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