ee4cb4a6c5
Martin Dukek
2026-08-27
Subject
schannel: refresh stream sizes after renegotiation
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Commit Diff GitHub →
lib/vtls/schannel.c+13 -17
| @@ -1733,6 +1733,18 @@ static CURLcode schannel_connect(struct Curl_cfilter *cf, | |
| } | |
| if(connssl->connecting_state == ssl_connect_done) { | |
| + | struct schannel_ssl_backend_data *backend = |
| + | (struct schannel_ssl_backend_data *)connssl->backend; |
| + | DEBUGASSERT(backend); |
| + | |
| + | if(Curl_pSecFn->QueryContextAttributes( |
| + | &backend->ctxt->ctxt_handle, |
| + | SECPKG_ATTR_STREAM_SIZES, |
| + | &backend->stream_sizes)) { |
| + | failf(data, "schannel: failed getting stream sizes"); |
| + | return CURLE_SSL_CONNECT_ERROR; |
| + | } |
| + | |
| connssl->state = ssl_connection_complete; | |
| #ifdef SECPKG_ATTR_ENDPOINT_BINDINGS /* mingw-w64 v9+, MS SDK 7.0A/VS2010+ */ | |
| @@ -1741,12 +1753,7 @@ static CURLcode schannel_connect(struct Curl_cfilter *cf, | |
| * binding to pass the IIS extended protection checks. | |
| * Available on Windows 7 or later. | |
| */ | |
| - | { |
| - | struct schannel_ssl_backend_data *backend = |
| - | (struct schannel_ssl_backend_data *)connssl->backend; |
| - | DEBUGASSERT(backend); |
| - | cf->conn->sslContext = &backend->ctxt->ctxt_handle; |
| - | } |
| + | cf->conn->sslContext = &backend->ctxt->ctxt_handle; |
| #endif | |
| *done = TRUE; | |
| @@ -1978,17 +1985,6 @@ static CURLcode schannel_send(struct Curl_cfilter *cf, struct Curl_easy *data, | |
| return result; | |
| } | |
| - | /* check if the maximum stream sizes were queried */ |
| - | if(backend->stream_sizes.cbMaximumMessage == 0) { |
| - | sspi_status = Curl_pSecFn->QueryContextAttributes( |
| - | &backend->ctxt->ctxt_handle, |
| - | SECPKG_ATTR_STREAM_SIZES, |
| - | &backend->stream_sizes); |
| - | if(sspi_status != SEC_E_OK) { |
| - | return CURLE_SEND_ERROR; |
| - | } |
| - | } |
| - | |
| /* check if the buffer is longer than the maximum message length */ | |
| if(len > backend->stream_sizes.cbMaximumMessage) { | |
| len = backend->stream_sizes.cbMaximumMessage; | |