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annotate src/event/ngx_event_pipe.h @ 4119:b66712cde67d

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Upstream: pipe length and input_filter_init in buffered mode. As long as ngx_event_pipe() has more data read from upstream than specified in p->length it's passed to input filter even if buffer isn't yet full. This allows to process data with known length without relying on connection close to signal data end. By default p->length is set to -1 in upstream module, i.e. end of data is indicated by connection close. To set it from per-protocol handlers upstream input_filter_init() now called in buffered mode (as well as in unbuffered mode).
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 15 Sep 2011 19:00:47 +0000
parents 51b401063046
children aae172db7ac8
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da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_EVENT_PIPE_H_INCLUDED_
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8 #define _NGX_EVENT_PIPE_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_event.h>
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16 typedef struct ngx_event_pipe_s ngx_event_pipe_t;
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18 typedef ngx_int_t (*ngx_event_pipe_input_filter_pt)(ngx_event_pipe_t *p,
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19 ngx_buf_t *buf);
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20 typedef ngx_int_t (*ngx_event_pipe_output_filter_pt)(void *data,
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21 ngx_chain_t *chain);
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24 struct ngx_event_pipe_s {
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25 ngx_connection_t *upstream;
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26 ngx_connection_t *downstream;
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27
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28 ngx_chain_t *free_raw_bufs;
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29 ngx_chain_t *in;
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30 ngx_chain_t **last_in;
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31
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32 ngx_chain_t *out;
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33 ngx_chain_t **last_out;
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34
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35 ngx_chain_t *free;
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36 ngx_chain_t *busy;
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37
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38 /*
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39 * the input filter i.e. that moves HTTP/1.1 chunks
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40 * from the raw bufs to an incoming chain
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41 */
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43 ngx_event_pipe_input_filter_pt input_filter;
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44 void *input_ctx;
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45
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46 ngx_event_pipe_output_filter_pt output_filter;
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47 void *output_ctx;
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ad5f382c9e7d nginx-0.0.1-2003-10-19-23:57:23 import
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49 unsigned read:1;
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50 unsigned cacheable:1;
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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51 unsigned single_buf:1;
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ba5dbb949603 nginx-0.0.1-2003-10-31-10:10:36 import
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52 unsigned free_bufs:1;
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53 unsigned upstream_done:1;
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54 unsigned upstream_error:1;
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55 unsigned upstream_eof:1;
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56 unsigned upstream_blocked:1;
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57 unsigned downstream_done:1;
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58 unsigned downstream_error:1;
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59 unsigned cyclic_temp_file:1;
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61 ngx_int_t allocated;
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62 ngx_bufs_t bufs;
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63 ngx_buf_tag_t tag;
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64
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65 ssize_t busy_size;
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67 off_t read_length;
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68 off_t length;
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70 off_t max_temp_file_size;
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71 ssize_t temp_file_write_size;
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73 ngx_msec_t read_timeout;
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74 ngx_msec_t send_timeout;
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75 ssize_t send_lowat;
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77 ngx_pool_t *pool;
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78 ngx_log_t *log;
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80 ngx_chain_t *preread_bufs;
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81 size_t preread_size;
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82 ngx_buf_t *buf_to_file;
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84 ngx_temp_file_t *temp_file;
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86 /* STUB */ int num;
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87 };
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90 ngx_int_t ngx_event_pipe(ngx_event_pipe_t *p, ngx_int_t do_write);
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91 ngx_int_t ngx_event_pipe_copy_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf);
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92 ngx_int_t ngx_event_pipe_add_free_buf(ngx_event_pipe_t *p, ngx_buf_t *b);
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95 #endif /* _NGX_EVENT_PIPE_H_INCLUDED_ */