{"id":4066,"date":"2020-01-14T17:01:38","date_gmt":"2020-01-14T09:01:38","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=4066"},"modified":"2020-01-14T17:01:38","modified_gmt":"2020-01-14T09:01:38","slug":"libcurl%e8%bf%9b%e8%a1%8c%e5%bc%82%e6%ad%a5%e5%b9%b6%e5%8f%91","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/4066","title":{"rendered":"libcurl\u8fdb\u884c\u5f02\u6b65\u5e76\u53d1"},"content":{"rendered":"
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\u539f\u6587\u5730\u5740<\/a><\/p>\n

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\u8f6c\u8f7d<\/span>\u6df1\u6f02\u4e00\u733f<\/a>\u00a0\u6700\u540e\u53d1\u5e03\u4e8e2018-02-13 10:37:46\u00a0<\/span>\u9605\u8bfb\u6570 3229<\/span>\u00a0<\/a>\u00a0\u6536\u85cf<\/div>\n
\u5c55\u5f00<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n
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\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0libcurl\u7684easy \u63a5\u53e3\uff0ceasy\u63a5\u53e3\u7684\u4f7f\u7528\u975e\u5e38\u7684\u7b80\u5355\uff0ccurl_easy_init\u7528\u6765\u521d\u59cb\u5316\u4e00\u4e2aeasy curl\u5bf9\u8c61\uff0ccurl_easy_setopt\u5bf9easy curl\u5bf9\u8c61\u8fdb\u884c\u76f8\u5173\u8bbe\u7f6e\uff0c\u6700\u540ecurl_easy_perform\u6267\u884ccurl\u8bf7\u6c42\uff0c\u8fd4\u56de\u76f8\u5e94\u7ed3\u679c\u3002easy\u63a5\u53e3\u662f\u963b\u585e\u7684\uff0c\u4e5f\u5c31\u662f\u8bf4\u5fc5\u987b\u7b49\u5230\u4e0a\u4e00\u4e2acurl\u8bf7\u6c42\u6267\u884c\u5b8c\u540e\uff0c\u4e0b\u4e00\u4e2acurl\u8bf7\u6c42\u624d\u80fd\u7ee7\u7eed\u6267\u884c\uff0c\u5728\u4e00\u822c\u7684\u5e94\u7528\u573a\u5408\uff0c\u8fd9\u79cd\u963b\u585e\u7684\u8bbf\u95ee\u65b9\u5f0f\u662f\u6ca1\u6709\u95ee\u9898\u7684\uff0c\u4f46\u662f\u5f53\u7a0b\u5e8f\u9700\u8981\u8fdb\u884c\u591a\u6b21curl\u5e76\u53d1\u8bf7\u6c42\u7684\u65f6\u5019\uff0ceasy\u63a5\u53e3\u5c31\u65e0\u80fd\u4e3a\u529b\u4e86\uff0c\u8fd9\u4e2a\u65f6\u5019curl\u63d0\u4f9b\u7684multi\u63a5\u53e3\u5c31\u6d3e\u4e0a\u7528\u573a\u4e86.<\/p>\n

\u76f8\u6bd4\u800c\u8a00\uff0cmulti\u63a5\u53e3\u7684\u4f7f\u7528\u4f1a\u6bd4easy \u63a5\u53e3\u7a0d\u5fae\u590d\u6742\u70b9\uff0c\u6bd5\u7adfmulti\u63a5\u53e3\u662f\u4f9d\u8d56easy\u63a5\u53e3\u7684\uff0c\u9996\u5148\u7c97\u7565\u7684\u8bb2\u4e0b\u5176\u4f7f\u7528\u6d41\u7a0b\uff1acurl_multi _init\u521d\u59cb\u5316\u4e00\u4e2amulti curl\u5bf9\u8c61\uff0c\u4e3a\u4e86\u540c\u65f6\u8fdb\u884c\u591a\u4e2acurl\u7684\u5e76\u53d1\u8bbf\u95ee\uff0c\u6211\u4eec\u9700\u8981\u521d\u59cb\u5316\u591a\u4e2aeasy curl\u5bf9\u8c61\uff0c\u4f7f\u7528curl_easy_setopt\u8fdb\u884c\u76f8\u5173\u8bbe\u7f6e\uff0c\u7136\u540e\u8c03\u7528curl_multi _add_handle\u628aeasy curl\u5bf9\u8c61\u6dfb\u52a0\u5230multi curl\u5bf9\u8c61\u4e2d\uff0c\u6dfb\u52a0\u5b8c\u6bd5\u540e\u6267\u884ccurl_multi_perform\u65b9\u6cd5\u8fdb\u884c\u5e76\u53d1\u7684\u8bbf\u95ee\uff0c\u8bbf\u95ee\u7ed3\u675f\u540ecurl_multi_remove_handle\u79fb\u9664\u76f8\u5173easy curl\u5bf9\u8c61\uff0ccurl_easy_cleanup\u6e05\u9664easy curl\u5bf9\u8c61\uff0c\u6700\u540ecurl_multi_cleanup\u6e05\u9664multi curl\u5bf9\u8c61\u3002<\/p>\n

\u4e0a\u9762\u7684\u4ecb\u7ecd\u53ea\u662f\u7ed9\u5927\u5bb6\u4e00\u4e2a\u5927\u6982\u7684\u5370\u8c61\uff0c\u5b9e\u9645\u4f7f\u7528\u4e2d\u8fd8\u6709\u5f88\u591a\u7ec6\u8282\u9700\u8981\u6ce8\u610f\uff0c\u597d\u4e86\uff0c\u4ee3\u7801\u624d\u80fd\u8bf4\u660e\u4e00\u5207\uff0c\u4e0b\u9762\u7684\u4f8b\u5b50\u4f7f\u7528multi curl\u65b9\u5f0f\u8fdb\u884c\u591a\u6b21http\u5e76\u53d1\u8bbf\u95ee\uff0c\u5e76\u8f93\u51fa\u8bbf\u95ee\u7ed3\u679c\u3002<\/p>\n

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[cpp]\u00a0view plain<\/a>copy<\/a><\/p>\n
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    \n
  1. #include\u00a0<string><\/span><\/li>\n
  2. #include\u00a0<iostream><\/span><\/li>\n
  3. <\/li>\n
  4. #include\u00a0<curl\/curl.h><\/span><\/li>\n
  5. #include\u00a0<sys\/time.h><\/span><\/li>\n
  6. #include\u00a0<unistd.h><\/span><\/li>\n
  7. <\/li>\n
  8. using<\/span>\u00a0namespace<\/span>\u00a0std;<\/li>\n
  9. <\/li>\n
  10. size_t<\/span>\u00a0curl_writer(void<\/span>\u00a0*buffer,\u00a0size_t<\/span>\u00a0size,\u00a0size_t<\/span>\u00a0count,\u00a0void<\/span>\u00a0*\u00a0stream)<\/li>\n
  11. {<\/li>\n
  12. \u00a0\u00a0\u00a0\u00a0std::string\u00a0*\u00a0pStream\u00a0=\u00a0static_cast<\/span><std::string\u00a0*>(stream);<\/li>\n
  13. \u00a0\u00a0\u00a0\u00a0(*pStream).append((char<\/span>\u00a0*)buffer,\u00a0size\u00a0*\u00a0count);<\/li>\n
  14. <\/li>\n
  15. \u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0size\u00a0*\u00a0count;<\/li>\n
  16. };<\/li>\n
  17. <\/li>\n
  18. \/**<\/span><\/li>\n
  19. \u00a0*\u00a0\u751f\u6210\u4e00\u4e2aeasy\u00a0curl\u5bf9\u8c61\uff0c\u8fdb\u884c\u4e00\u4e9b\u7b80\u5355\u7684\u8bbe\u7f6e\u64cd\u4f5c<\/span><\/li>\n
  20. \u00a0*\/<\/span><\/li>\n
  21. CURL\u00a0*\u00a0curl_easy_handler(const<\/span>\u00a0std::string\u00a0&\u00a0sUrl,<\/li>\n
  22. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0const<\/span>\u00a0std::string\u00a0&\u00a0sProxy,<\/li>\n
  23. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0std::string\u00a0&\u00a0sRsp,<\/li>\n
  24. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0unsigned\u00a0int<\/span>\u00a0uiTimeout)<\/li>\n
  25. {<\/li>\n
  26. \u00a0\u00a0\u00a0\u00a0CURL\u00a0*\u00a0curl\u00a0=\u00a0curl_easy_init();<\/li>\n
  27. <\/li>\n
  28. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_URL,\u00a0sUrl.c_str());<\/li>\n
  29. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_NOSIGNAL,\u00a01);<\/li>\n
  30. <\/li>\n
  31. \u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(uiTimeout\u00a0>\u00a00)<\/li>\n
  32. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  33. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_TIMEOUT_MS,\u00a0uiTimeout);<\/li>\n
  34. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  35. \u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(!sProxy.empty())<\/li>\n
  36. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  37. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_PROXY,\u00a0sProxy.c_str());<\/li>\n
  38. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  39. <\/li>\n
  40. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0write\u00a0function\u00a0\/\/<\/span><\/li>\n
  41. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_WRITEFUNCTION,\u00a0curl_writer);<\/li>\n
  42. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_WRITEDATA,\u00a0&sRsp);<\/li>\n
  43. <\/li>\n
  44. \u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0curl;<\/li>\n
  45. }<\/li>\n
  46. <\/li>\n
  47. \/**<\/span><\/li>\n
  48. \u00a0*\u00a0\u4f7f\u7528select\u51fd\u6570\u76d1\u542cmulti\u00a0curl\u6587\u4ef6\u63cf\u8ff0\u7b26\u7684\u72b6\u6001<\/span><\/li>\n
  49. \u00a0*\u00a0\u76d1\u542c\u6210\u529f\u8fd4\u56de0\uff0c\u76d1\u542c\u5931\u8d25\u8fd4\u56de-1<\/span><\/li>\n
  50. \u00a0*\/<\/span><\/li>\n
  51. int<\/span>\u00a0curl_multi_select(CURLM\u00a0*\u00a0curl_m)<\/li>\n
  52. {<\/li>\n
  53. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0ret\u00a0=\u00a00;<\/li>\n
  54. <\/li>\n
  55. \u00a0\u00a0\u00a0\u00a0struct<\/span>\u00a0timeval\u00a0timeout_tv;<\/li>\n
  56. \u00a0\u00a0\u00a0\u00a0fd_set\u00a0\u00a0fd_read;<\/li>\n
  57. \u00a0\u00a0\u00a0\u00a0fd_set\u00a0\u00a0fd_write;<\/li>\n
  58. \u00a0\u00a0\u00a0\u00a0fd_set\u00a0\u00a0fd_except;<\/li>\n
  59. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0max_fd\u00a0=\u00a0-1;<\/li>\n
  60. <\/li>\n
  61. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u6ce8\u610f\u8fd9\u91cc\u4e00\u5b9a\u8981\u6e05\u7a7afdset,curl_multi_fdset\u4e0d\u4f1a\u6267\u884cfdset\u7684\u6e05\u7a7a\u64cd\u4f5c\u00a0\u00a0\/\/<\/span><\/li>\n
  62. \u00a0\u00a0\u00a0\u00a0FD_ZERO(&fd_read);<\/li>\n
  63. \u00a0\u00a0\u00a0\u00a0FD_ZERO(&fd_write);<\/li>\n
  64. \u00a0\u00a0\u00a0\u00a0FD_ZERO(&fd_except);<\/li>\n
  65. <\/li>\n
  66. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u8bbe\u7f6eselect\u8d85\u65f6\u65f6\u95f4\u00a0\u00a0\/\/<\/span><\/li>\n
  67. \u00a0\u00a0\u00a0\u00a0timeout_tv.tv_sec\u00a0=\u00a01;<\/li>\n
  68. \u00a0\u00a0\u00a0\u00a0timeout_tv.tv_usec\u00a0=\u00a00;<\/li>\n
  69. <\/li>\n
  70. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u83b7\u53d6multi\u00a0curl\u9700\u8981\u76d1\u542c\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u96c6\u5408\u00a0fd_set\u00a0\/\/<\/span><\/li>\n
  71. \u00a0\u00a0\u00a0\u00a0curl_multi_fdset(curl_m,\u00a0&fd_read,\u00a0&fd_write,\u00a0&fd_except,\u00a0&max_fd);<\/li>\n
  72. <\/li>\n
  73. \u00a0\u00a0\u00a0\u00a0\/**<\/span><\/li>\n
  74. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0When\u00a0max_fd\u00a0returns\u00a0with\u00a0-1,<\/span><\/li>\n
  75. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0you\u00a0need\u00a0to\u00a0wait\u00a0a\u00a0while\u00a0and\u00a0then\u00a0proceed\u00a0and\u00a0call\u00a0curl_multi_perform\u00a0anyway.<\/span><\/li>\n
  76. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0How\u00a0long\u00a0to\u00a0wait?\u00a0I\u00a0would\u00a0suggest\u00a0100\u00a0milliseconds\u00a0at\u00a0least,<\/span><\/li>\n
  77. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0but\u00a0you\u00a0may\u00a0want\u00a0to\u00a0test\u00a0it\u00a0out\u00a0in\u00a0your\u00a0own\u00a0particular\u00a0conditions\u00a0to\u00a0find\u00a0a\u00a0suitable\u00a0value.<\/span><\/li>\n
  78. \u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/span><\/li>\n
  79. \u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(-1\u00a0==\u00a0max_fd)<\/li>\n
  80. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  81. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0-1;<\/li>\n
  82. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  83. <\/li>\n
  84. \u00a0\u00a0\u00a0\u00a0\/**<\/span><\/li>\n
  85. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u6267\u884c\u76d1\u542c\uff0c\u5f53\u6587\u4ef6\u63cf\u8ff0\u7b26\u72b6\u6001\u53d1\u751f\u6539\u53d8\u7684\u65f6\u5019\u8fd4\u56de<\/span><\/li>\n
  86. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u8fd4\u56de0\uff0c\u7a0b\u5e8f\u8c03\u7528curl_multi_perform\u901a\u77e5curl\u6267\u884c\u76f8\u5e94\u64cd\u4f5c<\/span><\/li>\n
  87. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u8fd4\u56de-1\uff0c\u8868\u793aselect\u9519\u8bef<\/span><\/li>\n
  88. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u6ce8\u610f\uff1a\u5373\u4f7fselect\u8d85\u65f6\u4e5f\u9700\u8981\u8fd4\u56de0\uff0c\u5177\u4f53\u53ef\u4ee5\u53bb\u5b98\u7f51\u770b\u6587\u6863\u8bf4\u660e<\/span><\/li>\n
  89. \u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/span><\/li>\n
  90. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0ret_code\u00a0=\u00a0::select(max_fd\u00a0+\u00a01,\u00a0&fd_read,\u00a0&fd_write,\u00a0&fd_except,\u00a0&timeout_tv);<\/li>\n
  91. \u00a0\u00a0\u00a0\u00a0switch<\/span>(ret_code)<\/li>\n
  92. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  93. \u00a0\u00a0\u00a0\u00a0case<\/span>\u00a0-1:<\/li>\n
  94. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0select\u00a0error\u00a0*\/<\/span><\/li>\n
  95. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ret\u00a0=\u00a0-1;<\/li>\n
  96. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break<\/span>;<\/li>\n
  97. \u00a0\u00a0\u00a0\u00a0case<\/span>\u00a00:<\/li>\n
  98. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0select\u00a0timeout\u00a0*\/<\/span><\/li>\n
  99. \u00a0\u00a0\u00a0\u00a0default<\/span>:<\/li>\n
  100. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0one\u00a0or\u00a0more\u00a0of\u00a0curl’s\u00a0file\u00a0descriptors\u00a0say\u00a0there’s\u00a0data\u00a0to\u00a0read\u00a0or\u00a0write*\/<\/span><\/li>\n
  101. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ret\u00a0=\u00a00;<\/li>\n
  102. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break<\/span>;<\/li>\n
  103. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  104. <\/li>\n
  105. \u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0ret;<\/li>\n
  106. }<\/li>\n
  107. <\/li>\n
  108. #define\u00a0MULTI_CURL_NUM\u00a03<\/span><\/li>\n
  109. <\/li>\n
  110. \/\/\u00a0\u8fd9\u91cc\u8bbe\u7f6e\u4f60\u9700\u8981\u8bbf\u95ee\u7684url\u00a0\/\/<\/span><\/li>\n
  111. std::string\u00a0\u00a0\u00a0\u00a0\u00a0URL\u00a0\u00a0\u00a0\u00a0\u00a0=\u00a0“http:\/\/website.com”<\/span>;<\/li>\n
  112. \/\/\u00a0\u8fd9\u91cc\u8bbe\u7f6e\u4ee3\u7406ip\u548c\u7aef\u53e3\u00a0\u00a0\/\/<\/span><\/li>\n
  113. std::string\u00a0\u00a0\u00a0\u00a0\u00a0PROXY\u00a0\u00a0\u00a0=\u00a0“ip:port”<\/span>;<\/li>\n
  114. \/\/\u00a0\u8fd9\u91cc\u8bbe\u7f6e\u8d85\u65f6\u65f6\u95f4\u00a0\u00a0\/\/<\/span><\/li>\n
  115. unsigned\u00a0int<\/span>\u00a0\u00a0\u00a0\u00a0TIMEOUT\u00a0=\u00a02000;\u00a0\/*\u00a0ms\u00a0*\/<\/span><\/li>\n
  116. <\/li>\n
  117. \/**<\/span><\/li>\n
  118. \u00a0*\u00a0multi\u00a0curl\u4f7f\u7528demo<\/span><\/li>\n
  119. \u00a0*\/<\/span><\/li>\n
  120. int<\/span>\u00a0curl_multi_demo(int<\/span>\u00a0num)<\/li>\n
  121. {<\/li>\n
  122. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u521d\u59cb\u5316\u4e00\u4e2amulti\u00a0curl\u00a0\u5bf9\u8c61\u00a0\/\/<\/span><\/li>\n
  123. \u00a0\u00a0\u00a0\u00a0CURLM\u00a0*\u00a0curl_m\u00a0=\u00a0curl_multi_init();<\/li>\n
  124. <\/li>\n
  125. \u00a0\u00a0\u00a0\u00a0std::string\u00a0\u00a0\u00a0\u00a0\u00a0RspArray[num];<\/li>\n
  126. \u00a0\u00a0\u00a0\u00a0CURL\u00a0*\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CurlArray[num];<\/li>\n
  127. <\/li>\n
  128. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u8bbe\u7f6eeasy\u00a0curl\u5bf9\u8c61\u5e76\u6dfb\u52a0\u5230multi\u00a0curl\u5bf9\u8c61\u4e2d\u00a0\u00a0\/\/<\/span><\/li>\n
  129. \u00a0\u00a0\u00a0\u00a0for<\/span>\u00a0(int<\/span>\u00a0idx\u00a0=\u00a00;\u00a0idx\u00a0<\u00a0num;\u00a0++idx)<\/li>\n
  130. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  131. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CurlArray[idx]\u00a0=\u00a0NULL;<\/li>\n
  132. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CurlArray[idx]\u00a0=\u00a0curl_easy_handler(URL,\u00a0PROXY,\u00a0RspArray[idx],\u00a0TIMEOUT);<\/li>\n
  133. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(CurlArray[idx]\u00a0==\u00a0NULL)<\/li>\n
  134. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  135. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0-1;<\/li>\n
  136. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
  137. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_multi_add_handle(curl_m,\u00a0CurlArray[idx]);<\/li>\n
  138. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  139. <\/li>\n
  140. \u00a0\u00a0\u00a0\u00a0\/*<\/span><\/li>\n
  141. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u8c03\u7528curl_multi_perform\u51fd\u6570\u6267\u884ccurl\u8bf7\u6c42<\/span><\/li>\n
  142. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0url_multi_perform\u8fd4\u56deCURLM_CALL_MULTI_PERFORM\u65f6\uff0c\u8868\u793a\u9700\u8981\u7ee7\u7eed\u8c03\u7528\u8be5\u51fd\u6570\u76f4\u5230\u8fd4\u56de\u503c\u4e0d\u662fCURLM_CALL_MULTI_PERFORM\u4e3a\u6b62<\/span><\/li>\n
  143. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0running_handles\u53d8\u91cf\u8fd4\u56de\u6b63\u5728\u5904\u7406\u7684easy\u00a0curl\u6570\u91cf\uff0crunning_handles\u4e3a0\u8868\u793a\u5f53\u524d\u6ca1\u6709\u6b63\u5728\u6267\u884c\u7684curl\u8bf7\u6c42<\/span><\/li>\n
  144. \u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/span><\/li>\n
  145. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0running_handles;<\/li>\n
  146. \u00a0\u00a0\u00a0\u00a0while<\/span>\u00a0(CURLM_CALL_MULTI_PERFORM\u00a0==\u00a0curl_multi_perform(curl_m,\u00a0&running_handles))\/\/\/\/\u6267\u884c\u5e76\u53d1\u8bf7\u6c42\uff0c\u975e\u963b\u585e\uff0c\u7acb\u5373\u8fd4\u56de<\/li>\n
  147. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  148. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0running_handles\u00a0<<\u00a0endl;<\/li>\n
  149. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  150. <\/li>\n
  151. \u00a0\u00a0\u00a0\u00a0\/**<\/span><\/li>\n
  152. \u00a0\u00a0\u00a0\u00a0\u00a0*\u00a0\u4e3a\u4e86\u907f\u514d\u5faa\u73af\u8c03\u7528curl_multi_perform\u4ea7\u751f\u7684cpu\u6301\u7eed\u5360\u7528\u7684\u95ee\u9898\uff0c\u91c7\u7528select\u6765\u76d1\u542c\u6587\u4ef6\u63cf\u8ff0\u7b26<\/span><\/li>\n
  153. \u00a0\u00a0\u00a0\u00a0\u00a0*\/<\/span><\/li>\n
  154. \u00a0\u00a0\u00a0\u00a0while<\/span>\u00a0(running_handles)<\/li>\n
  155. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  156. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(-1\u00a0==\u00a0curl_multi_select(curl_m))<\/li>\n
  157. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  158. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cerr\u00a0<<\u00a0“select\u00a0error”<\/span>\u00a0<<\u00a0endl;<\/li>\n
  159. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break<\/span>;<\/li>\n
  160. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0else<\/span>\u00a0{<\/li>\n
  161. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0select\u76d1\u542c\u5230\u4e8b\u4ef6\uff0c\u8c03\u7528curl_multi_perform\u901a\u77e5curl\u6267\u884c\u76f8\u5e94\u7684\u64cd\u4f5c\u00a0\/\/<\/span><\/li>\n
  162. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0while<\/span>\u00a0(CURLM_CALL_MULTI_PERFORM\u00a0==\u00a0curl_multi_perform(curl_m,\u00a0&running_handles))<\/li>\n
  163. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  164. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“select:\u00a0“<\/span>\u00a0<<\u00a0running_handles\u00a0<<\u00a0endl;<\/li>\n
  165. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
  166. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
  167. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“select:\u00a0“<\/span>\u00a0<<\u00a0running_handles\u00a0<<\u00a0endl;<\/li>\n
  168. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  169. <\/li>\n
  170. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u8f93\u51fa\u6267\u884c\u7ed3\u679c\u00a0\/\/<\/span><\/li>\n
  171. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0msgs_left;<\/li>\n
  172. \u00a0\u00a0\u00a0\u00a0CURLMsg\u00a0*\u00a0\u00a0\u00a0msg;<\/li>\n
  173. \u00a0\u00a0\u00a0\u00a0while<\/span>((msg\u00a0=\u00a0curl_multi_info_read(curl_m,\u00a0&msgs_left)))<\/li>\n
  174. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  175. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(CURLMSG_DONE\u00a0==\u00a0msg->msg)<\/li>\n
  176. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  177. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0idx;<\/li>\n
  178. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for<\/span>\u00a0(idx\u00a0=\u00a00;\u00a0idx\u00a0<\u00a0num;\u00a0++idx)<\/li>\n
  179. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  180. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(msg->easy_handle\u00a0==\u00a0CurlArray[idx])\u00a0break<\/span>;<\/li>\n
  181. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
  182. <\/li>\n
  183. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(idx\u00a0==\u00a0num)<\/li>\n
  184. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  185. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cerr\u00a0<<\u00a0“curl\u00a0not\u00a0found”<\/span>\u00a0<<\u00a0endl;<\/li>\n
  186. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0else<\/span><\/li>\n
  187. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/li>\n
  188. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“curl\u00a0[“<\/span>\u00a0<<\u00a0idx\u00a0<<\u00a0“]\u00a0completed\u00a0with\u00a0status:\u00a0“<\/span><\/li>\n
  189. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<<\u00a0msg->data.result\u00a0<<\u00a0endl;<\/li>\n
  190. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“rsp:\u00a0“<\/span>\u00a0<<\u00a0RspArray[idx]\u00a0<<\u00a0endl;<\/li>\n
  191. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
  192. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
  193. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  194. <\/li>\n
  195. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u8fd9\u91cc\u8981\u6ce8\u610fcleanup\u7684\u987a\u5e8f\u00a0\/\/<\/span><\/li>\n
  196. \u00a0\u00a0\u00a0\u00a0for<\/span>\u00a0(int<\/span>\u00a0idx\u00a0=\u00a00;\u00a0idx\u00a0<\u00a0num;\u00a0++idx)<\/li>\n
  197. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  198. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_multi_remove_handle(curl_m,\u00a0CurlArray[idx]);<\/li>\n
  199. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  200. <\/li>\n
  201. \u00a0\u00a0\u00a0\u00a0for<\/span>\u00a0(int<\/span>\u00a0idx\u00a0=\u00a00;\u00a0idx\u00a0<\u00a0num;\u00a0++idx)<\/li>\n
  202. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  203. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_easy_cleanup(CurlArray[idx]);<\/li>\n
  204. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  205. <\/li>\n
  206. \u00a0\u00a0\u00a0\u00a0curl_multi_cleanup(curl_m);<\/li>\n
  207. <\/li>\n
  208. \u00a0\u00a0\u00a0\u00a0return<\/span>\u00a00;<\/li>\n
  209. }<\/li>\n
  210. <\/li>\n
  211. \/**<\/span><\/li>\n
  212. \u00a0*\u00a0easy\u00a0curl\u4f7f\u7528demo<\/span><\/li>\n
  213. \u00a0*\/<\/span><\/li>\n
  214. int<\/span>\u00a0curl_easy_demo(int<\/span>\u00a0num)<\/li>\n
  215. {<\/li>\n
  216. \u00a0\u00a0\u00a0\u00a0std::string\u00a0\u00a0\u00a0\u00a0\u00a0RspArray[num];<\/li>\n
  217. <\/li>\n
  218. \u00a0\u00a0\u00a0\u00a0for<\/span>\u00a0(int<\/span>\u00a0idx\u00a0=\u00a00;\u00a0idx\u00a0<\u00a0num;\u00a0++idx)<\/li>\n
  219. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  220. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURL\u00a0*\u00a0curl\u00a0=\u00a0curl_easy_handler(URL,\u00a0PROXY,\u00a0RspArray[idx],\u00a0TIMEOUT);<\/li>\n
  221. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLcode\u00a0code\u00a0=\u00a0curl_easy_perform(curl);<\/li>\n
  222. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“curl\u00a0[“<\/span>\u00a0<<\u00a0idx\u00a0<<\u00a0“]\u00a0completed\u00a0with\u00a0status:\u00a0“<\/span><\/li>\n
  223. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<<\u00a0code\u00a0<<\u00a0endl;<\/li>\n
  224. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“rsp:\u00a0“<\/span>\u00a0<<\u00a0RspArray[idx]\u00a0<<\u00a0endl;<\/li>\n
  225. <\/li>\n
  226. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0clear\u00a0handle\u00a0\/\/<\/span><\/li>\n
  227. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_easy_cleanup(curl);<\/li>\n
  228. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  229. <\/li>\n
  230. \u00a0\u00a0\u00a0\u00a0return<\/span>\u00a00;<\/li>\n
  231. }<\/li>\n
  232. <\/li>\n
  233. #define\u00a0USE_MULTI_CURL<\/span><\/li>\n
  234. <\/li>\n
  235. struct<\/span>\u00a0timeval\u00a0begin_tv,\u00a0end_tv;<\/li>\n
  236. <\/li>\n
  237. int<\/span>\u00a0main(int<\/span>\u00a0argc,\u00a0char<\/span>\u00a0*\u00a0argv[])<\/li>\n
  238. {<\/li>\n
  239. \u00a0\u00a0\u00a0\u00a0if<\/span>\u00a0(argc\u00a0<\u00a02)<\/li>\n
  240. \u00a0\u00a0\u00a0\u00a0{<\/li>\n
  241. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0return<\/span>\u00a0-1;<\/li>\n
  242. \u00a0\u00a0\u00a0\u00a0}<\/li>\n
  243. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0num\u00a0=\u00a0atoi(argv[1]);<\/li>\n
  244. <\/li>\n
  245. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u83b7\u53d6\u5f00\u59cb\u65f6\u95f4\u00a0\/\/<\/span><\/li>\n
  246. \u00a0\u00a0\u00a0\u00a0gettimeofday(&begin_tv,\u00a0NULL);<\/li>\n
  247. #ifdef\u00a0USE_MULTI_CURL<\/span><\/li>\n
  248. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u4f7f\u7528multi\u63a5\u53e3\u8fdb\u884c\u8bbf\u95ee\u00a0\/\/<\/span><\/li>\n
  249. \u00a0\u00a0\u00a0\u00a0curl_multi_demo(num);<\/li>\n
  250. #else<\/span><\/li>\n
  251. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u4f7f\u7528easy\u63a5\u53e3\u8fdb\u884c\u8bbf\u95ee\u00a0\/\/<\/span><\/li>\n
  252. \u00a0\u00a0\u00a0\u00a0curl_easy_demo(num);<\/li>\n
  253. #endif<\/span><\/li>\n
  254. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u83b7\u53d6\u7ed3\u675f\u65f6\u95f4\u00a0\u00a0\/\/<\/span><\/li>\n
  255. \u00a0\u00a0\u00a0\u00a0struct<\/span>\u00a0timeval\u00a0end_tv;<\/li>\n
  256. \u00a0\u00a0\u00a0\u00a0gettimeofday(&end_tv,\u00a0NULL);<\/li>\n
  257. <\/li>\n
  258. \u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u8ba1\u7b97\u6267\u884c\u5ef6\u65f6\u5e76\u8f93\u51fa\uff0c\u7528\u4e8e\u6bd4\u8f83\u00a0\u00a0\/\/<\/span><\/li>\n
  259. \u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0eclapsed\u00a0=\u00a0(end_tv.tv_sec\u00a0–\u00a0begin_tv.tv_sec)\u00a0*\u00a01000\u00a0+<\/li>\n
  260. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(end_tv.tv_usec\u00a0–\u00a0begin_tv.tv_usec)\u00a0\/\u00a01000;<\/li>\n
  261. <\/li>\n
  262. \u00a0\u00a0\u00a0\u00a0cout\u00a0<<\u00a0“eclapsed\u00a0time:”<\/span>\u00a0<<\u00a0eclapsed\u00a0<<\u00a0“ms”<\/span>\u00a0<<\u00a0endl;<\/li>\n
  263. <\/li>\n
  264. \u00a0\u00a0\u00a0\u00a0return<\/span>\u00a00;<\/li>\n
  265. }<\/li>\n<\/ol>\n

    curl\u5b98\u7f51\u4e0a\u63d0\u4f9b\u7684\u6587\u4ef6\u4e0a\u4f20\u4f8b\u5b50:<\/p>\n

    \n
    [cpp]\u00a0view plain<\/a>copy<\/a><\/p>\n
    <\/div>\n
    <\/div>\n
    <\/embed><\/div>\n
    <\/embed><\/div>\n<\/div>\n<\/div>\n
      \n
    1. \/*\u00a0This\u00a0is\u00a0an\u00a0example\u00a0application\u00a0source\u00a0code\u00a0using\u00a0the\u00a0multi\u00a0interface<\/span><\/li>\n
    2. \u00a0*\u00a0to\u00a0do\u00a0a\u00a0multipart\u00a0formpost\u00a0without\u00a0“blocking”.\u00a0*\/<\/span><\/li>\n
    3. #include\u00a0<stdio.h><\/span><\/li>\n
    4. #include\u00a0<string.h><\/span><\/li>\n
    5. #include\u00a0<sys\/time.h><\/span><\/li>\n
    6. <\/li>\n
    7. #include\u00a0<curl\/curl.h><\/span><\/li>\n
    8. <\/li>\n
    9. int<\/span>\u00a0main(void<\/span>)<\/li>\n
    10. {<\/li>\n
    11. \u00a0\u00a0CURL\u00a0*curl;<\/li>\n
    12. <\/li>\n
    13. \u00a0\u00a0CURLM\u00a0*multi_handle;<\/li>\n
    14. \u00a0\u00a0int<\/span>\u00a0still_running;<\/li>\n
    15. <\/li>\n
    16. \u00a0\u00a0struct<\/span>\u00a0curl_httppost\u00a0*formpost=NULL;<\/li>\n
    17. \u00a0\u00a0struct<\/span>\u00a0curl_httppost\u00a0*lastptr=NULL;<\/li>\n
    18. \u00a0\u00a0struct<\/span>\u00a0curl_slist\u00a0*headerlist=NULL;<\/li>\n
    19. \u00a0\u00a0static<\/span>\u00a0const<\/span>\u00a0char<\/span>\u00a0buf[]\u00a0=\u00a0“Expect:”<\/span>;<\/li>\n
    20. <\/li>\n
    21. \u00a0\u00a0\/*\u00a0Fill\u00a0in\u00a0the\u00a0file\u00a0upload\u00a0field.\u00a0This\u00a0makes\u00a0libcurl\u00a0load\u00a0data\u00a0from<\/span><\/li>\n
    22. \u00a0\u00a0\u00a0\u00a0\u00a0the\u00a0given\u00a0file\u00a0name\u00a0when\u00a0curl_easy_perform()\u00a0is\u00a0called.\u00a0*\/<\/span><\/li>\n
    23. \u00a0\u00a0curl_formadd(&formpost,<\/li>\n
    24. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lastptr,<\/li>\n
    25. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_COPYNAME,\u00a0“sendfile”<\/span>,<\/li>\n
    26. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_FILE,\u00a0“postit2.c”<\/span>,<\/li>\n
    27. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_END);<\/li>\n
    28. <\/li>\n
    29. \u00a0\u00a0\/*\u00a0Fill\u00a0in\u00a0the\u00a0filename\u00a0field\u00a0*\/<\/span><\/li>\n
    30. \u00a0\u00a0curl_formadd(&formpost,<\/li>\n
    31. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lastptr,<\/li>\n
    32. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_COPYNAME,\u00a0“filename”<\/span>,<\/li>\n
    33. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_COPYCONTENTS,\u00a0“postit2.c”<\/span>,<\/li>\n
    34. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_END);<\/li>\n
    35. <\/li>\n
    36. \u00a0\u00a0\/*\u00a0Fill\u00a0in\u00a0the\u00a0submit\u00a0field\u00a0too,\u00a0even\u00a0if\u00a0this\u00a0is\u00a0rarely\u00a0needed\u00a0*\/<\/span><\/li>\n
    37. \u00a0\u00a0curl_formadd(&formpost,<\/li>\n
    38. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0&lastptr,<\/li>\n
    39. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_COPYNAME,\u00a0“submit”<\/span>,<\/li>\n
    40. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_COPYCONTENTS,\u00a0“send”<\/span>,<\/li>\n
    41. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CURLFORM_END);<\/li>\n
    42. <\/li>\n
    43. \u00a0\u00a0curl\u00a0=\u00a0curl_easy_init();<\/li>\n
    44. \u00a0\u00a0multi_handle\u00a0=\u00a0curl_multi_init();<\/li>\n
    45. <\/li>\n
    46. \u00a0\u00a0\/*\u00a0initalize\u00a0custom\u00a0header\u00a0list\u00a0(stating\u00a0that\u00a0Expect:\u00a0100-continue\u00a0is\u00a0not<\/span><\/li>\n
    47. \u00a0\u00a0\u00a0\u00a0\u00a0wanted\u00a0*\/<\/span><\/li>\n
    48. \u00a0\u00a0headerlist\u00a0=\u00a0curl_slist_append(headerlist,\u00a0buf);<\/li>\n
    49. \u00a0\u00a0if<\/span>(curl\u00a0&&\u00a0multi_handle)\u00a0{<\/li>\n
    50. <\/li>\n
    51. \u00a0\u00a0\u00a0\u00a0\/*\u00a0what\u00a0URL\u00a0that\u00a0receives\u00a0this\u00a0POST\u00a0*\/<\/span><\/li>\n
    52. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_URL,\u00a0“http:\/\/www.example.com\/upload.cgi”<\/span>);<\/li>\n
    53. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_VERBOSE,\u00a01L);<\/li>\n
    54. <\/li>\n
    55. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_HTTPHEADER,\u00a0headerlist);<\/li>\n
    56. \u00a0\u00a0\u00a0\u00a0curl_easy_setopt(curl,\u00a0CURLOPT_HTTPPOST,\u00a0formpost);<\/li>\n
    57. <\/li>\n
    58. \u00a0\u00a0\u00a0\u00a0curl_multi_add_handle(multi_handle,\u00a0curl);<\/li>\n
    59. <\/li>\n
    60. \u00a0\u00a0\u00a0\u00a0curl_multi_perform(multi_handle,\u00a0&still_running);<\/li>\n
    61. <\/li>\n
    62. \u00a0\u00a0\u00a0\u00a0do<\/span>\u00a0{<\/li>\n
    63. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0struct<\/span>\u00a0timeval\u00a0timeout;<\/li>\n
    64. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0rc;\u00a0\/*\u00a0select()\u00a0return\u00a0code\u00a0*\/<\/span><\/li>\n
    65. <\/li>\n
    66. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fd_set\u00a0fdread;<\/li>\n
    67. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fd_set\u00a0fdwrite;<\/li>\n
    68. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0fd_set\u00a0fdexcep;<\/li>\n
    69. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0int<\/span>\u00a0maxfd\u00a0=\u00a0-1;<\/li>\n
    70. <\/li>\n
    71. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0long<\/span>\u00a0curl_timeo\u00a0=\u00a0-1;<\/li>\n
    72. <\/li>\n
    73. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0FD_ZERO(&fdread);<\/li>\n
    74. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0FD_ZERO(&fdwrite);<\/li>\n
    75. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0FD_ZERO(&fdexcep);<\/li>\n
    76. <\/li>\n
    77. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0set\u00a0a\u00a0suitable\u00a0timeout\u00a0to\u00a0play\u00a0around\u00a0with\u00a0*\/<\/span><\/li>\n
    78. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0timeout.tv_sec\u00a0=\u00a01;<\/li>\n
    79. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0timeout.tv_usec\u00a0=\u00a00;<\/li>\n
    80. <\/li>\n
    81. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_multi_timeout(multi_handle,\u00a0&curl_timeo);<\/li>\n
    82. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>(curl_timeo\u00a0>=\u00a00)\u00a0{<\/li>\n
    83. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0timeout.tv_sec\u00a0=\u00a0curl_timeo\u00a0\/\u00a01000;<\/li>\n
    84. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0if<\/span>(timeout.tv_sec\u00a0>\u00a01)<\/li>\n
    85. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0timeout.tv_sec\u00a0=\u00a01;<\/li>\n
    86. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0else<\/span><\/li>\n
    87. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0timeout.tv_usec\u00a0=\u00a0(curl_timeo\u00a0%\u00a01000)\u00a0*\u00a01000;<\/li>\n
    88. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
    89. <\/li>\n
    90. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0get\u00a0file\u00a0descriptors\u00a0from\u00a0the\u00a0transfers\u00a0*\/<\/span><\/li>\n
    91. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_multi_fdset(multi_handle,\u00a0&fdread,\u00a0&fdwrite,\u00a0&fdexcep,\u00a0&maxfd);<\/li>\n
    92. <\/li>\n
    93. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0In\u00a0a\u00a0real-world\u00a0program\u00a0you\u00a0OF\u00a0COURSE\u00a0check\u00a0the\u00a0return\u00a0code\u00a0of\u00a0the<\/span><\/li>\n
    94. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0function\u00a0calls.\u00a0\u00a0On\u00a0success,\u00a0the\u00a0value\u00a0of\u00a0maxfd\u00a0is\u00a0guaranteed\u00a0to\u00a0be<\/span><\/li>\n
    95. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0greater\u00a0or\u00a0equal\u00a0than\u00a0-1.\u00a0\u00a0We\u00a0call\u00a0select(maxfd\u00a0+\u00a01,\u00a0…),\u00a0specially\u00a0in<\/span><\/li>\n
    96. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0case\u00a0of\u00a0(maxfd\u00a0==\u00a0-1),\u00a0we\u00a0call\u00a0select(0,\u00a0…),\u00a0which\u00a0is\u00a0basically\u00a0equal<\/span><\/li>\n
    97. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0to\u00a0sleep.\u00a0*\/<\/span><\/li>\n
    98. <\/li>\n
    99. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0rc\u00a0=\u00a0select(maxfd+1,\u00a0&fdread,\u00a0&fdwrite,\u00a0&fdexcep,\u00a0&timeout);<\/li>\n
    100. <\/li>\n
    101. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0switch<\/span>(rc)\u00a0{<\/li>\n
    102. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0case<\/span>\u00a0-1:<\/li>\n
    103. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0select\u00a0error\u00a0*\/<\/span><\/li>\n
    104. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break<\/span>;<\/li>\n
    105. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0case<\/span>\u00a00:<\/li>\n
    106. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0default<\/span>:<\/li>\n
    107. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/*\u00a0timeout\u00a0or\u00a0readable\/writable\u00a0sockets\u00a0*\/<\/span><\/li>\n
    108. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0printf(“perform!\\n”<\/span>);<\/li>\n
    109. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0curl_multi_perform(multi_handle,\u00a0&still_running);<\/li>\n
    110. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0printf(“running:\u00a0%d!\\n”<\/span>,\u00a0still_running);<\/li>\n
    111. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0break<\/span>;<\/li>\n
    112. \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/li>\n
    113. \u00a0\u00a0\u00a0\u00a0}\u00a0while<\/span>(still_running);<\/li>\n
    114. <\/li>\n
    115. \u00a0\u00a0\u00a0\u00a0curl_multi_cleanup(multi_handle);<\/li>\n
    116. <\/li>\n
    117. \u00a0\u00a0\u00a0\u00a0\/*\u00a0always\u00a0cleanup\u00a0*\/<\/span><\/li>\n
    118. \u00a0\u00a0\u00a0\u00a0curl_easy_cleanup(curl);<\/li>\n
    119. <\/li>\n
    120. \u00a0\u00a0\u00a0\u00a0\/*\u00a0then\u00a0cleanup\u00a0the\u00a0formpost\u00a0chain\u00a0*\/<\/span><\/li>\n
    121. \u00a0\u00a0\u00a0\u00a0curl_formfree(formpost);<\/li>\n
    122. <\/li>\n
    123. \u00a0\u00a0\u00a0\u00a0\/*\u00a0free\u00a0slist\u00a0*\/<\/span><\/li>\n
    124. \u00a0\u00a0\u00a0\u00a0curl_slist_free_all\u00a0(headerlist);<\/li>\n
    125. \u00a0\u00a0}<\/li>\n
    126. \u00a0\u00a0return<\/span>\u00a00;<\/li>\n
    127. }<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/article>\n","protected":false},"excerpt":{"rendered":"

      \u539f\u6587\u5730\u5740   \u8f6c\u8f7d\u6df1\u6f02\u4e00\u733f\u00a0\u6700<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[118],"class_list":["post-4066","post","type-post","status-publish","format-standard","hentry","tag-02-"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4066","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=4066"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/4066\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=4066"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=4066"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=4066"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}