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gRPC: RST_STREAM(NO_ERROR) handling after "trailer only" responses. Similarly to the problem fixed in 2096b21fcd10 (ticket #1792), when a "trailer only" gRPC response (that is, a response with the END_STREAM flag in the HEADERS frame) was immediately followed by RST_STREAM(NO_ERROR) in the data preread along with the response header, RST_STREAM wasn't properly skipped and caused "upstream rejected request with error 0" errors. Observed with "unknown service" gRPC errors returned by grpc-go. Fix is to set ctx->done if we are going to parse additional data, so the RST_STREAM(NO_ERROR) is properly skipped. Additionally, now ngx_http_grpc_filter() will complain about frames sent for closed stream if there are any.
author Pavel Pautov <p.pautov@f5.com>
date Wed, 18 Nov 2020 18:41:16 -0800
parents 1cd63ae46243
children 67c68cd973b8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 <!DOCTYPE html>
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2 <html>
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3 <head>
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4 <title>Error</title>
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5 <style>
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6 body {
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7 width: 35em;
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8 margin: 0 auto;
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9 font-family: Tahoma, Verdana, Arial, sans-serif;
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10 }
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11 </style>
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12 </head>
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13 <body>
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14 <h1>An error occurred.</h1>
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15 <p>Sorry, the page you are looking for is currently unavailable.<br/>
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16 Please try again later.</p>
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17 <p>If you are the system administrator of this resource then you should check
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18 the error log for details.</p>
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19 <p><em>Faithfully yours, nginx.</em></p>
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20 </body>
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21 </html>