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liii_http.tmu
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<TMU|<tuple|1.0.5|1.2.9.8>>
<style|<tuple|generic|chinese|goldfish|literate|reduced-margins|python>>
<\body>
<\hide-preamble>
<assign|r7rs|<flag|R7RS|dark cyan>>
<assign|srfi|<flag|SRFI|dark red>>
<assign|font|math=Latin Modern Math,cjk=Noto CJK SC,CMU>
<assign|typehint|<macro|body|<goldfish-lang|<arg|body>>>>
</hide-preamble>
<chapter|(liii http)>
<section|许可证>
<\goldfish-chunk|http/liii/http.scm|false|true>
;
; Copyright (C) 2024 The Goldfish Scheme Authors
;
; Licensed under the Apache License, Version 2.0 (the "License");
; you may not use this file except in compliance with the License.
; You may obtain a copy of the License at
;
; http://www.apache.org/licenses/LICENSE-2.0
;
; Unless required by applicable law or agreed to in writing, software
; distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
; WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
; License for the specific language governing permissions and limitations
; under the License.
;
\;
</goldfish-chunk>
<\cpp-chunk|http/src/http.cpp|false|true>
//
// Copyright (C) 2024 The Goldfish Scheme Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
//
\;
</cpp-chunk>
<section|接口>
<\scm-chunk|http/liii/http.scm|true|true>
(define-library (liii http)
(import (liii hash-table)
\ \ \ \ \ \ \ \ (liii alist))
(export http-head http-get http-post http-ok?)
(begin
\;
</scm-chunk>
<paragraph|HTTP响应对象>
<\description>
<item*|status_code>HTTP状态码
<item*|url>最终有效的请求URL
<item*|elapsed>请求的总时间，以秒为单位
<item*|text>HTTP响应的正文
<item*|reason>HTTP响应出错的原因
<item*|headers>HTTP响应头
</description>
<section|Goldfish Scheme中的response设计>
<\session|goldfish|default>
<\unfolded-io>
\<gtr\>\
<|unfolded-io>
(import (liii hash-table))
<|unfolded-io>
<goldfish-result|(rootlet)>
</unfolded-io>
<\unfolded-io>
\<gtr\>\
<|unfolded-io>
(define r (make-hash-table))
<|unfolded-io>
<goldfish-result|(hash-table)>
</unfolded-io>
<\input>
\<gtr\>\
<|input>
(hash-table-set! r 'ok #t)
</input>
<\unfolded-io>
\<gtr\>\
<|unfolded-io>
(r 'ok)
<|unfolded-io>
<goldfish-result|#t>
</unfolded-io>
<\input>
\<gtr\>\
<|input>
(hash-table-set! r 'status-code 200)
</input>
<\unfolded-io>
\<gtr\>\
<|unfolded-io>
(r 'status-code)
<|unfolded-io>
<goldfish-result|200>
</unfolded-io>
<\input>
\<gtr\>\
<|input>
(hash-table-set! r 'headers (make-hash-table))
</input>
<\input>
\<gtr\>\
<|input>
(hash-table-set! (r 'headers) "Content-Length" "9593")
</input>
<\folded-io>
\<gtr\>\
<|folded-io>
((r 'headers) "Content-Length")
<|folded-io>
<goldfish-result|"9593">
</folded-io>
<\input>
\<gtr\>\
<|input>
\;
</input>
</session>
<section|示例代码>
这是一个使用Goldfish访问硅基流动的示例代码，用户可以在家目录的<shell|.silicon_cloud>文件中存储硅基流动的API密钥，也可以将明文填入到下面的代码中。使用如下命令行可以运行这个示例代码：
<\shell-code>
xmake config --http=y --yes -vD
xmake b http
bin/http -l http/tests/chat_demo.scm
</shell-code>
<\goldfish-chunk|http/tests/chat_demo.scm|false|true>
(set! *load-path* (cons "http" *load-path*))
(set! *load-path* (cons "json" *load-path*))
\;
(import (liii http)
\ \ \ \ \ \ \ \ (liii json)
\ \ \ \ \ \ \ \ (liii list)
\ \ \ \ \ \ \ \ (liii os)
\ \ \ \ \ \ \ \ (liii string)
\ \ \ \ \ \ \ \ (liii path)
\ \ \ \ \ \ \ \ (liii case))
\;
(define (read-and-clean-file file-path)
\ \ (string-trim-right (path-read-text file-path) #\\newline))
\;
(define (load-silicon-cloud-api-key)
\ \ (let* ((home (if (os-windows?)
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (getenv "USERPROFILE") ; Windows 使用 USERPROFILE
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (getenv "HOME"))) \ \ \ \ \ ; Unix/Linux 使用 HOME
\ \ \ \ \ \ \ \ \ (file-path (string-append home (string (os-sep)) ".silicon_cloud")))
\ \ \ \ (if (file-exists? file-path) \ \ \ \ \ \ \ \ \ ; 直接判断文件是否存在
\ \ \ \ \ \ \ \ (read-and-clean-file file-path)
\ \ \ \ \ \ \ \ "请填入硅基流动的API密钥")))
\;
</goldfish-chunk>
构建文本对话的单个消息体，其中role只能是"user", "assistant"和"system"，<todo|这里在构造的时候，暂时不做校验>。
<\goldfish-chunk|http/tests/chat_demo.scm|true|true>
(define-case-class message
\ \ ((role string?)
\ \ \ (content string?))
\;
\ \ (define (%to-json)
\ \ \ \ `(("role" . ,role) ("content" . ,content))))
\;
(define (message? obj)
\ \ (obj :is-instance-of 'message))
\;
</goldfish-chunk>
将消息体添加到JSON对象q的尾部。q对象的结构就是上面定义的payload函数中的JSON，这里是在更改messages字段的值。
<\goldfish-chunk|http/tests/chat_demo.scm|true|true>
(define-case-class payload
\ \ ((messages vector? #()))
\ \
\ \ (define (%to-json)
\ \ \ \ `(("model" . "deepseek-ai/DeepSeek-V2.5")
\ \ \ \ \ ("messages" . ,(vector-map (lambda (x) (x :to-json)) messages))
\ \ \ \ \ ("max_tokens" . 512)))
\ \
\ \ (define (%to-json-string)
\ \ \ \ (json-\<gtr\>string (%to-json)))
\ \
\ \ (typed-define (%append (msg message?))
\ \ \ \ (payload :messages (vector-append messages (vector msg)))))
\;
</goldfish-chunk>
向硅基流动发起HTTP Post请求的核心代码，这里默认使用DeepSeek-V2.5这个付费模型，因为实测该模型的效果比较好，价格比较低。
<\goldfish-chunk|http/tests/chat_demo.scm|true|true>
(define headers
\ \ `(
\ \ \ \ \ ("Authorization" . ,(string-append "Bearer " (load-silicon-cloud-api-key)))
\ \ \ \ \ ("Content-Type" . "application/json")
\ \ \ )
)
\;
(define (chat payload)
\ \ (let* ((r (http-post "https://api.siliconflow.cn/v1/chat/completions"
\ \ \ \ \ \ \ \ \ \ \ \ :data (payload :to-json-string)
\ \ \ \ \ \ \ \ \ \ \ \ :headers headers)))
\ \ \ \ (if (http-ok? r)
\ \ \ \ \ \ \ \ (r 'text)
\ \ \ \ \ \ \ \ (r 'status-code))))
\;
</goldfish-chunk>
按照提供的问题列表，和大模型对话，打印每次对话（在前面加上<verbatim|Q: >和<verbatim|A: >），最后输出一下token的用量。
<\goldfish-chunk|http/tests/chat_demo.scm|true|false>
(define questions
\ \ #("唐宋八大家是哪八位（简短回答）"
\ \ \ \ "请按照顺序返回上一个回答中的第五位"
\ \ \ \ "用双引号引用上一个问题的回答（包含标点符号），并告诉我一共多少个汉字？"
\ \ \ \ "介绍他的生平和作品（简短回答）"))
\;
(let loop ((i 0) (p (payload #())) (tokens 0))
\ \ (if (\<less\> i (length questions))
\ \ \ \ \ \ (let* ((q (p :append (message "user" (questions i))))
\ \ \ \ \ \ \ \ \ \ \ \ \ (r (chat q))
\ \ \ \ \ \ \ \ \ \ \ \ \ (j (string-\<gtr\>json r))
\ \ \ \ \ \ \ \ \ \ \ \ \ (a (json-ref* j "choices" 0 "message" "content")))
\ \ \ \ \ \ \ \ \ \ (display* "payload: " (q :to-json-string))
\ \ \ \ \ \ \ \ \ \ (newline)
\ \ \ \ \ \ \ \ \ \ (newline)
\ \ \ \ \ \ \ \ \ \ (display* "Q: " (questions i) "\\n")
\ \ \ \ \ \ \ \ \ \ (display* "A: " a "\\n")
\ \ \ \ \ \ \ \ \ \ (newline)
\ \ \ \ \ \ \ \ \ \ (loop (+ i 1)
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (q :append (message "assistant" a))
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (+ tokens (json-ref* j "usage" "total_tokens"))))
\ \ \ \ \ \ (display* "Total tokens: " tokens)))
\;
</goldfish-chunk>
<section|测试>
如何测试：
<\shell-code>
xmake config --http=y --yes -vD
xmake b http
bin/http http/tests/http_test.scm
</shell-code>
<\goldfish-chunk|http/tests/http_test.scm|false|true>
(set! *load-path* (cons "http" *load-path*))
(set! *load-path* (cons "json" *load-path*))
\;
(import (liii check)
\ \ \ \ \ \ \ \ (liii http)
\ \ \ \ \ \ \ \ (liii string)
\ \ \ \ \ \ \ \ (liii json))
\;
</goldfish-chunk>
\;
<section|实现>
<subsection|C++部分>
<paragraph|头文件>
<\cpp-chunk|http/src/http.cpp|true|true>
#include "goldfish.hpp"
#include "s7.h"
#include \<less\>string\<gtr\>
#include \<less\>iostream\<gtr\>
#include \<less\>cpr/cpr.h\<gtr\>
\;
using namespace goldfish;
using namespace std;
\;
</cpp-chunk>
<paragraph|repsonse2hashtable>
<\cpp-chunk|http/src/http.cpp|true|true>
static s7_pointer
response2hashtable (s7_scheme* sc, cpr::Response r) {
\ \ s7_pointer ht= s7_make_hash_table (sc, 8);
\ \ s7_hash_table_set (sc, ht, s7_make_symbol (sc, "status-code"), s7_make_integer (sc, r.status_code));
\ \ s7_hash_table_set (sc, ht, s7_make_symbol (sc, "url"), s7_make_string (sc, r.url.c_str()));
\ \ s7_hash_table_set (sc, ht, s7_make_symbol(sc, "elapsed"), s7_make_real (sc, r.elapsed));
\ \ s7_hash_table_set (sc, ht, s7_make_symbol (sc, "text"), s7_make_string (sc, r.text.c_str ()));
\ \ s7_hash_table_set (sc, ht, s7_make_symbol (sc, "reason"), s7_make_string (sc, r.reason.c_str ()));
\ \ s7_pointer headers= s7_make_hash_table(sc, 8);
\ \ for (const auto &header : r.header) {
\ \ \ \ const auto key= header.first.c_str ();
\ \ \ \ const auto value= header.second.c_str ();
\ \ \ \ s7_hash_table_set (sc, headers, s7_make_string (sc, key), s7_make_string (sc, value));
\ \ }
\ \ s7_hash_table_set (sc, ht, s7_make_symbol(sc, "headers"), headers);
\;
\ \ return ht;
}
\;
</cpp-chunk>
<paragraph|to_cpr_parameters>
<\cpp-chunk|http/src/http.cpp|true|true>
inline cpr::Parameters
to_cpr_parameters (s7_scheme* sc, s7_pointer args) {
\ \ cpr::Parameters params= cpr::Parameters{};
\ \ if (s7_is_list(sc, args)) {
\ \ \ \ s7_pointer iter= args;
\ \ \ \ while (!s7_is_null (sc, iter)) {
\ \ \ \ \ \ s7_pointer pair= s7_car (iter);
\ \ \ \ \ \ if (s7_is_pair (pair)) {
\ \ \ \ \ \ \ \ const char* key= s7_string (s7_car (pair));
\ \ \ \ \ \ \ \ const char* value= s7_string (s7_cdr (pair));
\ \ \ \ \ \ \ \ params.Add (cpr::Parameter (string (key), string (value)));
\ \ \ \ \ \ }
\ \ \ \ \ \ iter= s7_cdr (iter);
\ \ \ \ }
\ \ }
\ \ return params;
}
\;
</cpp-chunk>
<paragraph|to_cpr_headers>
<\cpp-chunk|http/src/http.cpp|true|true>
inline cpr::Header
to_cpr_headers (s7_scheme* sc, s7_pointer args) {
\ \ cpr::Header headers= cpr::Header{};
\ \ if (s7_is_list(sc, args)) {
\ \ \ \ s7_pointer iter= args;
\ \ \ \ while (!s7_is_null (sc, iter)) {
\ \ \ \ \ \ s7_pointer pair= s7_car (iter);
\ \ \ \ \ \ if (s7_is_pair (pair)) {
\ \ \ \ \ \ \ \ const char* key= s7_string (s7_car (pair));
\ \ \ \ \ \ \ \ const char* value= s7_string (s7_cdr (pair));
\ \ \ \ \ \ \ \ headers.insert (std::make_pair (key, value));
\ \ \ \ \ \ }
\ \ \ \ \ \ iter= s7_cdr (iter);
\ \ \ \ }
\ \ }
\ \ return headers;
}
\;
</cpp-chunk>
<subsection|Scheme部分>
<paragraph|http-ok?><typehint|((r hash-table?)) =\<gtr\> boolean?>
接受HTTP响应作为输入，返回该HTTP响应是否OK，一般来说，HTTP状态码小于400就是OK状态。
<\goldfish-chunk|http/liii/http.scm|true|true>
(define (http-ok? r)
\ \ (let ((status-code (r 'status-code))
\ \ \ \ \ \ \ \ (reason (r 'reason))
\ \ \ \ \ \ \ \ (url (r 'url)))
\ \ \ \ (cond ((and (\<gtr\>= status-code 400) (\<less\> status-code 500))
\ \ \ \ \ \ \ \ \ \ \ (error 'http-error
\ \ \ \ \ \ \ \ \ \ \ \ \ (string-append (number-\<gtr\>string status-code)
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ " Client Error: " reason " for url: " url)))
\ \ \ \ \ \ \ \ \ \ ((and (\<gtr\>= status-code 500) (\<less\> status-code 600))
\ \ \ \ \ \ \ \ \ \ \ (error 'http-error
\ \ \ \ \ \ \ \ \ \ \ \ \ (string-append (number-\<gtr\>string status-code)
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ " Server Error: " reason " for url: " url)))
\ \ \ \ \ \ \ \ \ \ (else #t))))
\;
</goldfish-chunk>
<subsection|C++和Scheme的混合>
<subsubsection|http-head>
<paragraph|C++实现>
<\cpp-chunk|http/src/http.cpp|true|true>
static s7_pointer
f_http_head (s7_scheme* sc, s7_pointer args) {
\ \ const char* url= s7_string (s7_car (args));
\ \ cpr::Session session;
\ \ session.SetUrl (cpr::Url (url));
\ \ cpr::Response r= session.Head ();
\ \ return response2hashtable (sc, r);
}
\;
</cpp-chunk>
<\cpp-chunk|http/src/http.cpp|true|true>
inline void
glue_http_head (s7_scheme* sc) {
\ \ s7_pointer cur_env= s7_curlet (sc);
\ \ const char* s_http_head = "g_http-head";
\ \ const char* d_http_head = "(g_http-head url ...) =\<gtr\> hash-table?";
\ \ auto func_http_head= s7_make_typed_function (sc, s_http_head, f_http_head, 1, 0, false, d_http_head, NULL);
\ \ s7_define (sc, cur_env, s7_make_symbol (sc, s_http_head), func_http_head);
}
\;
</cpp-chunk>
<paragraph|Scheme实现>
<\goldfish-chunk|http/liii/http.scm|true|true>
(define* (http-head url)
\ \ (let1 r (g_http-head url)
\ \ \ \ \ \ \ \ r))
\;
</goldfish-chunk>
<paragraph|测试：HEAD的基础功能>
<\goldfish-chunk|http/tests/http_test.scm|true|true>
(let1 r (http-head "https://httpbin.org")
\ \ (check (r 'status-code) =\<gtr\> 200)
\ \ (check (r 'url) =\<gtr\> "https://httpbin.org/")
\ \ (check-true (real? (r 'elapsed)))
\ \ (check (r 'reason) =\<gtr\> "")
\ \ (check (r 'text) =\<gtr\> "")
\ \ (check ((r 'headers) "content-type") =\<gtr\> "text/html; charset=utf-8")
\ \ (check ((r 'headers) "content-length") =\<gtr\> "9593")
\ \ (check-true (http-ok? r)))
\;
</goldfish-chunk>
<\session|python|default>
<\output>
Python 3.11.2 [/usr/bin/python3]
Python plugin for TeXmacs.
Please see the documentation in Help -\<gtr\> Plugins -\<gtr\> Python
</output>
<\input>
\<gtr\>\<gtr\>\<gtr\>\
<|input>
import requests
</input>
<\input>
\<gtr\>\<gtr\>\<gtr\>\
<|input>
r= requests.head("https://httpbin.org")
</input>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.status_code
<|unfolded-io>
200
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.url
<|unfolded-io>
https://httpbin.org/
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.ok
<|unfolded-io>
True
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.elapsed
<|unfolded-io>
0:00:01.308550
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.headers
<|unfolded-io>
{'Date': 'Thu, 26 Dec 2024 05:07:04 GMT', 'Content-Type': 'text/html; charset=utf-8', 'Content-Length': '9593', 'Connection': 'keep-alive', 'Server': 'gunicorn/19.9.0', 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Credentials': 'true'}
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.headers["Content-Length"]
<|unfolded-io>
9593
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.reason
<|unfolded-io>
OK
</unfolded-io>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
r.content
<|unfolded-io>
b''
</unfolded-io>
<\input>
\<gtr\>\<gtr\>\<gtr\>\
<|input>
\;
</input>
</session>
<subsubsection|http-get>
<paragraph|C++实现>
<\cpp-chunk|http/src/http.cpp|true|true>
static s7_pointer
f_http_get (s7_scheme* sc, s7_pointer args) {
\ \ const char* url= s7_string (s7_car (args));
\ \ s7_pointer params= s7_cadr (args);
\ \ cpr::Parameters cpr_params= to_cpr_parameters(sc, params);
\;
\ \ cpr::Session session;
\ \ session.SetUrl (cpr::Url (url));
\ \ session.SetParameters (cpr_params);
\;
\ \ cpr::Response r= session.Get ();
\ \ return response2hashtable (sc, r);
}
\;
</cpp-chunk>
<\cpp-chunk|http/src/http.cpp|true|true>
inline void
glue_http_get (s7_scheme* sc) {
\ \ s7_pointer cur_env= s7_curlet (sc);
\ \ const char* s_http_get= "g_http-get";
\ \ const char* d_http_get= "(g_http-get url params) =\<gtr\> hash-table?";
\ \ auto func_http_get= s7_make_typed_function (sc, s_http_get, f_http_get, 2, 0, false, d_http_get, NULL);
\ \ s7_define (sc, cur_env, s7_make_symbol (sc, s_http_get), func_http_get);
}
\;
</cpp-chunk>
<paragraph|Scheme实现>
<\goldfish-chunk|http/liii/http.scm|true|true>
(define* (http-get url (params '()))
\ \ (when (not (alist? params))
\ \ \ \ (type-error params "is not a association list"))
\ \ (let1 r (g_http-get url params)
\ \ \ \ \ \ \ \ r))
\;
</goldfish-chunk>
<paragraph|不带参数的GET请求>
<\goldfish-chunk|http/tests/http_test.scm|true|true>
(let1 r (http-get "https://httpbin.org")
\ \ (check (r 'status-code) =\<gtr\> 200)
\ \ (check-true (\<gtr\> (string-length (r 'text)) 0))
\ \ (check ((r 'headers) "content-type") =\<gtr\> "text/html; charset=utf-8"))
\;
</goldfish-chunk>
<paragraph|带参数的GET请求>
<\goldfish-chunk|http/tests/http_test.scm|true|true>
(let1 r (http-get "https://httpbin.org/get"
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ :params '(("key1" . "value1") ("key2" . "value2")))
\ \ \ \ \ \ (check-true (string-contains (r 'text) "value1"))
\ \ \ \ \ \ (check-true (string-contains (r 'text) "value2"))
\ \ \ \ \ \ (check (r 'url) =\<gtr\> "https://httpbin.org/get?key1=value1&key2=value2"))
\;
</goldfish-chunk>
<subsubsection|http-post>
<paragraph|C++实现>
<\cpp-chunk|http/src/http.cpp|true|true>
static s7_pointer
f_http_post (s7_scheme* sc, s7_pointer args) {
\ \ const char* url= s7_string (s7_car (args));
\ \ s7_pointer params= s7_cadr (args);
\ \ cpr::Parameters cpr_params= to_cpr_parameters(sc, params);
\ \ const char* body= s7_string (s7_caddr (args));
\ \ cpr::Body cpr_body= cpr::Body (body);
\ \ s7_pointer headers= s7_cadddr (args);
\ \ cpr::Header cpr_headers= to_cpr_headers (sc, headers);
\;
\ \ cpr::Session session;
\ \ session.SetUrl (cpr::Url (url));
\ \ session.SetParameters (cpr_params);
\ \ session.SetBody (cpr_body);
\ \ session.SetHeader (cpr_headers);
\;
\ \ cpr::Response r= session.Post ();
\ \ return response2hashtable (sc, r);
}
\;
</cpp-chunk>
<\cpp-chunk|http/src/http.cpp|true|true>
inline void
glue_http_post (s7_scheme* sc) {
\ \ s7_pointer cur_env= s7_curlet (sc);
\ \ const char* name= "g_http-post";
\ \ const char* doc= "(g_http-post url params body) =\<gtr\> hash-table?";
\ \ auto func_http_post= s7_make_typed_function (sc, name, f_http_post, 4, 0, false, doc, NULL);
\ \ s7_define (sc, cur_env, s7_make_symbol (sc, name), func_http_post);
}
\;
</cpp-chunk>
<paragraph|Scheme实现>
如果不设置HTTP请求头，默认的<shell|Content-Type>是<shell|application/x-www-form-urlencoded>。
<\goldfish-chunk|http/liii/http.scm|true|true>
(define* (http-post url (params '()) (data "") (headers '()))
\ \ (cond ((and (string? data) (\<gtr\> (string-length data) 0) (null? headers))
\ \ \ \ \ \ \ \ \ (g_http-post url params data '(("Content-Type" . "text/plain"))))
\ \ \ \ \ \ \ \ (else (g_http-post url params data headers))))
\;
</goldfish-chunk>
\;
<paragraph|带参数的POST请求>
<\goldfish-chunk|http/tests/http_test.scm|true|true>
(let1 r (http-post "https://httpbin.org/post"
\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ :params '(("key1" . "value1") ("key2" . "value2")))
\ \ \ \ \ \ (check-true (string-contains (r 'text) "value1"))
\ \ \ \ \ \ (check-true (string-contains (r 'text) "value2"))
\ \ \ \ \ \ (check (r 'status-code) =\<gtr\> 200)
\ \ \ \ \ \ (check (r 'url) =\<gtr\> "https://httpbin.org/post?key1=value1&key2=value2"))
\;
</goldfish-chunk>
<\session|python|default>
<\unfolded-io>
\<gtr\>\<gtr\>\<gtr\>\
<|unfolded-io>
import requests
params = {'key1': 'value1', 'key2': 'value2'}
response = requests.post('https://httpbin.org/post', params=params)
print(response.status_code)
print(response.url)
<|unfolded-io>
200