Mercurial > hg > nginx-quic
view src/stream/ngx_stream_script.h @ 8743:5d09596909c6 stable-1.20
Upstream: fixed timeouts with gRPC, SSL and select (ticket #2229).
With SSL it is possible that an established connection is ready for
reading after the handshake. Further, events might be already disabled
in case of level-triggered event methods. If this happens and
ngx_http_upstream_send_request() blocks waiting for some data from
the upstream, such as flow control in case of gRPC, the connection
will time out due to no read events on the upstream connection.
Fix is to explicitly check the c->read->ready flag if sending request
blocks and post a read event if it is set.
Note that while it is possible to modify ngx_ssl_handshake() to keep
read events active, this won't completely resolve the issue, since
there can be data already received during the SSL handshake
(see 573bd30e46b4).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Fri, 20 Aug 2021 03:53:56 +0300 |
parents | b82162b8496a |
children | 3ab8e1e2f0f7 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_STREAM_SCRIPT_H_INCLUDED_ #define _NGX_STREAM_SCRIPT_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_stream.h> typedef struct { u_char *ip; u_char *pos; ngx_stream_variable_value_t *sp; ngx_str_t buf; ngx_str_t line; unsigned flushed:1; unsigned skip:1; ngx_stream_session_t *session; } ngx_stream_script_engine_t; typedef struct { ngx_conf_t *cf; ngx_str_t *source; ngx_array_t **flushes; ngx_array_t **lengths; ngx_array_t **values; ngx_uint_t variables; ngx_uint_t ncaptures; ngx_uint_t size; void *main; unsigned complete_lengths:1; unsigned complete_values:1; unsigned zero:1; unsigned conf_prefix:1; unsigned root_prefix:1; } ngx_stream_script_compile_t; typedef struct { ngx_str_t value; ngx_uint_t *flushes; void *lengths; void *values; union { size_t size; } u; } ngx_stream_complex_value_t; typedef struct { ngx_conf_t *cf; ngx_str_t *value; ngx_stream_complex_value_t *complex_value; unsigned zero:1; unsigned conf_prefix:1; unsigned root_prefix:1; } ngx_stream_compile_complex_value_t; typedef void (*ngx_stream_script_code_pt) (ngx_stream_script_engine_t *e); typedef size_t (*ngx_stream_script_len_code_pt) (ngx_stream_script_engine_t *e); typedef struct { ngx_stream_script_code_pt code; uintptr_t len; } ngx_stream_script_copy_code_t; typedef struct { ngx_stream_script_code_pt code; uintptr_t index; } ngx_stream_script_var_code_t; typedef struct { ngx_stream_script_code_pt code; uintptr_t n; } ngx_stream_script_copy_capture_code_t; typedef struct { ngx_stream_script_code_pt code; uintptr_t conf_prefix; } ngx_stream_script_full_name_code_t; void ngx_stream_script_flush_complex_value(ngx_stream_session_t *s, ngx_stream_complex_value_t *val); ngx_int_t ngx_stream_complex_value(ngx_stream_session_t *s, ngx_stream_complex_value_t *val, ngx_str_t *value); size_t ngx_stream_complex_value_size(ngx_stream_session_t *s, ngx_stream_complex_value_t *val, size_t default_value); ngx_int_t ngx_stream_compile_complex_value( ngx_stream_compile_complex_value_t *ccv); char *ngx_stream_set_complex_value_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); char *ngx_stream_set_complex_value_size_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); ngx_uint_t ngx_stream_script_variables_count(ngx_str_t *value); ngx_int_t ngx_stream_script_compile(ngx_stream_script_compile_t *sc); u_char *ngx_stream_script_run(ngx_stream_session_t *s, ngx_str_t *value, void *code_lengths, size_t reserved, void *code_values); void ngx_stream_script_flush_no_cacheable_variables(ngx_stream_session_t *s, ngx_array_t *indices); void *ngx_stream_script_add_code(ngx_array_t *codes, size_t size, void *code); size_t ngx_stream_script_copy_len_code(ngx_stream_script_engine_t *e); void ngx_stream_script_copy_code(ngx_stream_script_engine_t *e); size_t ngx_stream_script_copy_var_len_code(ngx_stream_script_engine_t *e); void ngx_stream_script_copy_var_code(ngx_stream_script_engine_t *e); size_t ngx_stream_script_copy_capture_len_code(ngx_stream_script_engine_t *e); void ngx_stream_script_copy_capture_code(ngx_stream_script_engine_t *e); #endif /* _NGX_STREAM_SCRIPT_H_INCLUDED_ */