{"id":208122,"date":"2025-07-08T16:08:55","date_gmt":"2025-07-08T08:08:55","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208122\/"},"modified":"2025-07-08T16:08:55","modified_gmt":"2025-07-08T08:08:55","slug":"%e5%9c%a8%e4%b8%ad%e9%97%b4%e4%bb%b6%e4%b8%ad%e9%87%8d%e5%86%99%e5%86%85%e5%ae%b9%e9%95%bf%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208122\/","title":{"rendered":"\u5728\u4e2d\u95f4\u4ef6\u4e2d\u91cd\u5199\u5185\u5bb9\u957f\u5ea6"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5728\u4e2d\u95f4\u4ef6\u4e2d\u91cd\u5199\u5185\u5bb9\u957f\u5ea6<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-29 10:36:32<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u54c8\u55bd\uff01\u5927\u5bb6\u597d\uff0c\u5f88\u9ad8\u5174\u53c8\u89c1\u9762\u4e86\uff0c\u6211\u662f\u7684\u4e00\u540d\u4f5c\u8005\uff0c\u4eca\u5929\u7531\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u4e00\u7bc7\u300a\u5728\u4e2d\u95f4\u4ef6\u4e2d\u91cd\u5199\u5185\u5bb9\u957f\u5ea6\u300b<\/span>\uff0c\u672c\u6587\u4e3b\u8981\u4f1a\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u5927\u5bb6\u4e00\u8d77\u5b66\u4e60\u8fdb\u6b65\uff0c\u4e5f\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u3001\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u8f6c\u53d1! \u4e0b\u9762\u5c31\u4e00\u8d77\u6765\u770b\u770b\u5427\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u4e0b\u9762\u7684\u4ee3\u7801\u91cd\u5199\u4e86\u4e00\u4e9b\u67e5\u8be2\u7684http\u6b63\u6587\u54cd\u5e94\u3002<\/p>\n

\u4f46\u662f\uff0c\u5b83\u65e0\u6cd5\u66f4\u65b0\u201c\u5185\u5bb9\u957f\u5ea6\u201d\u6807\u5934\u5b57\u6bb5\uff0c\u5b83\u59cb\u7ec8\u4fdd\u6301\u76f8\u540c\u7684\u539f\u59cb\u503c\u3002<\/p>\n

\u5982\u4f55\u66f4\u65b0 http \u54cd\u5e94\u7684\u5185\u5bb9\u957f\u5ea6\u6807\u5934\u5b57\u6bb5\uff1f<\/p>\n

type writereplacer struct {\n    http.responsewriter\n    search  []byte\n    replace func(*http.request) string\n    buf     []byte\n    r       *http.request\n    dir     string\n}\n\nfunc (w *writereplacer) write(in []byte) (int, error) {\n    if w.buf == nil {\n        w.buf = []byte{}\n    }\n    w.buf = append(w.buf, in...)\n    n := len(in)\n    if index := bytes.lastindex(w.buf, w.search); index > -1 {\n        var r []byte\n        if w.dir == \"before\" {\n            g := []byte(w.replace(w.r))\n            n += len(g)\n            r = append(g, w.buf[index:]...)\n            w.buf = append(w.buf[:index], r...)\n        } else {\n            g := []byte(w.replace(w.r))\n            n += len(g)\n            r = append(r, w.buf[:index+len(w.search)]...)\n            r = append(r, g...)\n            r = append(r, w.buf[index:]...)\n            w.buf = r\n        }\n    }\n    return n, nil\n}\n\nfunc (w *writereplacer) flush() {\n    w.responsewriter.header().set(\"content-length\", fmt.sprint(len(w.buf)))\n    w.responsewriter.write(w.buf[:])\n    w.buf = w.buf[:0]\n}\n\nfunc insertafter(h http.handler, path string, search []byte, replace func(*http.request) string) http.handler {\n    return http.handlerfunc(func(w http.responsewriter, r *http.request) {\n        if r.url.path == path {\n            w.header().del(\"content-length\")\n            w = &writereplacer{responsewriter: w, search: search, replace: replace, r: r, dir: \"after\"}\n            defer w.(http.flusher).flush()\n        }\n        h.servehttp(w, r)\n    })\n}\n\nfunc insertbefore(h http.handler, path string, search []byte, replace func(*http.request) string) http.handler {\n    return http.handlerfunc(func(w http.responsewriter, r *http.request) {\n        if r.url.path == path {\n            w.header().del(\"content-length\")\n            w = &writereplacer{responsewriter: w, search: search, replace: replace, r: r, dir: \"before\"}\n            defer w.(http.flusher).flush()\n        }\n        h.servehttp(w, r)\n    })\n}<\/pre>\n
\u6211\u6536\u5230\u4e24\u4e2a\u9519\u8bef\u6d88\u606f\uff0c\u7b2c\u4e00\u4e2a\u6765\u81ea nginx<\/p>\n
2019\/03\/08 05:58:37 [error] 31194#0: *19 \nupstream prematurely closed connection while reading upstream, \nclient: 82.21.18.16, server: buycoffee.online, request: \n\"get \/ http\/1.1\", upstream: \"http:\/\/127.0.0.1:8081\/\", host: \"buycoffee.online\"<\/pre>\n
\u7b2c\u4e8c\u4e2a\u6765\u81eacurl<\/p>\n
curl: (18) transfer closed with 6237 bytes remaining to read<\/pre>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u6b63\u5982 mkopriva \u6240\u5efa\u8bae\u7684\uff0c\u6280\u5de7\u662f\u91cd\u5199 responsewriter.writeheader<\/code>\u3002<\/p>\n
\u6211\u76f8\u4fe1\u8fd9\u4e0e write \u53ef\u80fd\u5728\u7b2c\u4e00\u6b21\u8c03\u7528\u65f6\u8c03\u7528 writeheader \u7684\u4e8b\u5b9e\u6709\u5173\uff0c\u4ece\u90a3\u91cc\u6211\u6ca1\u6709\u5c06\u6307\u4ee4\u653e\u5728\u6b63\u786e\u7684\u4f4d\u7f6e\u3002<\/p>\n
\u4e3a\u4e86\u9632\u6b62\u8fdb\u4e00\u6b65\u7684\u56f0\u96be\uff0c\u6211\u66f4\u559c\u6b22\u4f7f\u7528\u5206\u5757\u4f20\u8f93\u3002<\/p>\n
\u4ee3\u7801\u66f4\u6539\u4e3a\uff1a<\/p>\n
func (w *writeReplacer) WriteHeader(statusCode int) {\n    w.Header().Del(\"Content-length\")\n    w.Header().Set(\"Transfer-Encoding\", \"chunked\")\n    w.ResponseWriter.WriteHeader(statusCode)\n}<\/pre>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300a\u5728\u4e2d\u95f4\u4ef6\u4e2d\u91cd\u5199\u5185\u5bb9\u957f\u5ea6\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-208122","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208122","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=208122"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208122\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208122"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208122"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208122"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}