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annotate src/os/unix/ngx_dlopen.c @ 7746:88eca63261c3

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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 7142b04337d6
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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7142b04337d6 Dynamic modules: dlopen() support.
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2 /*
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3 * Copyright (C) Maxim Dounin
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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12 #if (NGX_HAVE_DLOPEN)
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14 char *
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15 ngx_dlerror(void)
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16 {
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17 char *err;
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19 err = (char *) dlerror();
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20
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21 if (err == NULL) {
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22 return "";
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23 }
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25 return err;
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26 }
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28 #endif