Mercurial > hg > nginx-quic
annotate src/http/ngx_http_write_filter.c @ 6:669801705ab1
nginx-0.0.1-2002-08-26-19:18:19 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 26 Aug 2002 15:18:19 +0000 |
parents | c5f071d376e5 |
children | 708f8bb772ec |
rev | line source |
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nginx-0.0.1-2002-08-15-21:20:26 import
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1 |
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nginx-0.0.1-2002-08-15-21:20:26 import
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2 #include <ngx_config.h> |
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3 |
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4 #include <ngx_hunk.h> |
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5 #include <ngx_http.h> |
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nginx-0.0.1-2002-08-15-21:20:26 import
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6 #include <ngx_http_filter.h> |
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nginx-0.0.1-2002-08-15-21:20:26 import
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7 #include <ngx_event_write.h> |
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8 |
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9 #include <ngx_http_write_filter.h> |
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10 |
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11 |
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12 ngx_http_module_t ngx_http_write_filter_module; |
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13 |
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14 |
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15 /* STUB */ |
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16 static ngx_http_write_filter_ctx_t module_ctx; |
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17 |
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18 void ngx_http_write_filter_init() |
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19 { |
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20 module_ctx.buffer_output = 10240; |
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21 module_ctx.out = NULL; |
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22 |
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23 ngx_http_write_filter_module.ctx = &module_ctx; |
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24 } |
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25 /* */ |
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26 |
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27 |
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28 int ngx_http_write_filter(ngx_http_request_t *r, ngx_chain_t *in) |
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29 { |
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30 int last; |
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31 off_t size, flush; |
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32 ngx_chain_t *ch, **prev, *chain; |
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33 ngx_http_write_filter_ctx_t *ctx; |
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34 |
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35 ctx = (ngx_http_write_filter_ctx_t *) |
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36 ngx_get_module_ctx(r->main ? r->main : r, |
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37 &ngx_http_write_filter_module); |
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38 size = flush = 0; |
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39 last = 0; |
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40 prev = &ctx->out; |
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41 |
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42 /* find size, flush point and last link of saved chain */ |
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43 for (ch = ctx->out; ch; ch = ch->next) { |
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44 prev = &ch->next; |
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45 size += ch->hunk->last.file - ch->hunk->pos.file; |
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46 |
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47 ngx_log_debug(r->connection->log, "old chunk: %x " QX_FMT " " QD_FMT _ |
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48 ch->hunk->type _ ch->hunk->pos.file _ |
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49 ch->hunk->last.file - ch->hunk->pos.file); |
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50 |
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51 if (ch->hunk->type & NGX_HUNK_FLUSH) |
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52 flush = size; |
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53 |
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54 if (ch->hunk->type & NGX_HUNK_LAST) |
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55 last = 1; |
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56 } |
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57 |
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58 /* add new chain to existent one */ |
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59 for (/* void */; in; in = in->next) { |
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60 ngx_test_null(ch, ngx_palloc(r->pool, sizeof(ngx_chain_t)), NGX_ERROR); |
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61 |
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62 ch->hunk = in->hunk; |
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63 ch->next = NULL; |
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64 *prev = ch; |
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65 prev = &ch->next; |
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66 size += ch->hunk->last.file - ch->hunk->pos.file; |
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67 |
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68 ngx_log_debug(r->connection->log, "new chunk: %x " QX_FMT " " QD_FMT _ |
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69 ch->hunk->type _ ch->hunk->pos.file _ |
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70 ch->hunk->last.file - ch->hunk->pos.file); |
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71 |
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72 if (ch->hunk->type & NGX_HUNK_FLUSH) |
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73 flush = size; |
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74 |
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75 if (ch->hunk->type & NGX_HUNK_LAST) |
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76 last = 1; |
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77 } |
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78 |
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79 if (!last && flush == 0 && size < ctx->buffer_output) |
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80 return NGX_OK; |
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81 |
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82 chain = ngx_event_write(r->connection, ctx->out, flush); |
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83 if (chain == (ngx_chain_t *) -1) |
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84 return NGX_ERROR; |
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85 |
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86 ctx->out = chain; |
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87 |
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88 return (chain ? NGX_AGAIN : NGX_OK); |
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89 } |