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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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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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9
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10
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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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14
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15
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16 typedef struct ngx_event_pipe_s ngx_event_pipe_t;
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17
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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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22
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23
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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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42
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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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48
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49 unsigned read:1;
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50 unsigned cachable:1;
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51 unsigned single_buf:1;
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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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60
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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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22
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65 ssize_t busy_size;
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0
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66
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67 off_t read_length;
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68
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69 off_t max_temp_file_size;
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70 ssize_t temp_file_write_size;
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71
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72 ngx_msec_t read_timeout;
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73 ngx_msec_t send_timeout;
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74 ssize_t send_lowat;
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75
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76 ngx_pool_t *pool;
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77 ngx_log_t *log;
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78
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79 ngx_chain_t *preread_bufs;
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80 size_t preread_size;
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81 ngx_buf_t *buf_to_file;
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82
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83 ngx_temp_file_t *temp_file;
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84
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85 /* STUB */ int num;
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86 };
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87
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88
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89 ngx_int_t ngx_event_pipe(ngx_event_pipe_t *p, int do_write);
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90 ngx_int_t ngx_event_pipe_copy_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf);
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32
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91 ngx_int_t ngx_event_pipe_add_free_buf(ngx_event_pipe_t *p, ngx_buf_t *b);
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0
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92
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93
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94 #endif /* _NGX_EVENT_PIPE_H_INCLUDED_ */
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