Chilkat Online Tools

C / Twitter API v2 / User by Username

Back to Collection Items

#include <C_CkHttp.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    BOOL success;
    HCkStringBuilder sbResponseBody;
    HCkJsonObject jResp;
    int respStatusCode;
    const char *detail;
    const char *title;
    const char *resource_type;
    const char *parameter;
    const char *value;
    const char *v_type;
    int i;
    int count_i;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http = CkHttp_Create();

    // Adds the "Authorization: Bearer <access_token>" header.
    CkHttp_putAuthToken(http,"<access_token>");

    sbResponseBody = CkStringBuilder_Create();
    success = CkHttp_QuickGetSb(http,"https://api.twitter.com/2/users/by/username/:username",sbResponseBody);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    jResp = CkJsonObject_Create();
    CkJsonObject_LoadSb(jResp,sbResponseBody);
    CkJsonObject_putEmitCompact(jResp,FALSE);

    printf("Response Body:\n");
    printf("%s\n",CkJsonObject_emit(jResp));

    respStatusCode = CkHttp_getLastStatus(http);
    printf("Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        printf("Response Header:\n");
        printf("%s\n",CkHttp_lastHeader(http));
        printf("Failed.\n");
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponseBody);
        CkJsonObject_Dispose(jResp);
        return;
    }

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "errors": [
    //     {
    //       "detail": "Could not find user with username: [TwitterDec].",
    //       "title": "Not Found Error",
    //       "resource_type": "user",
    //       "parameter": "username",
    //       "value": "TwitterDec",
    //       "type": "https://api.twitter.com/2/problems/resource-not-found"
    //     }
    //   ]
    // }

    // Sample code for parsing the JSON response...
    // Use this online tool to generate parsing code from sample JSON: Generate JSON Parsing Code

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.

    i = 0;
    count_i = CkJsonObject_SizeOfArray(jResp,"errors");
    while (i < count_i) {
        CkJsonObject_putI(jResp,i);
        detail = CkJsonObject_stringOf(jResp,"errors[i].detail");
        title = CkJsonObject_stringOf(jResp,"errors[i].title");
        resource_type = CkJsonObject_stringOf(jResp,"errors[i].resource_type");
        parameter = CkJsonObject_stringOf(jResp,"errors[i].parameter");
        value = CkJsonObject_stringOf(jResp,"errors[i].value");
        v_type = CkJsonObject_stringOf(jResp,"errors[i].type");
        i = i + 1;
    }



    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbResponseBody);
    CkJsonObject_Dispose(jResp);

    }

Curl Command

curl -X GET
	-H "Authorization: Bearer <access_token>"
https://api.twitter.com/2/users/by/username/:username

Postman Collection Item JSON

{
  "name": "User by Username",
  "request": {
    "method": "GET",
    "header": [
    ],
    "url": {
      "raw": "https://api.twitter.com/2/users/by/username/:username",
      "protocol": "https",
      "host": [
        "api",
        "twitter",
        "com"
      ],
      "path": [
        "2",
        "users",
        "by",
        "username",
        ":username"
      ],
      "query": [
        {
          "key": "user.fields",
          "value": "",
          "description": "Comma-separated fields for the user object.\n\nAllowed values:\ncreated_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld\n\nDefault values:\nid,name,username",
          "disabled": true
        },
        {
          "key": "expansions",
          "value": "",
          "description": "Expansions enable requests to expand an ID into a full object in the includes response object.\n\nAllowed value:\npinned_tweet_id\n\nDefault value: none",
          "disabled": true
        },
        {
          "key": "tweet.fields",
          "value": "",
          "description": "Comma-separated list of fields for the Tweet object. Expansion required.\n\nAllowed values:\nattachments,author_id,context_annotations,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,non_public_metrics,organic_metrics,possibly_sensitive,promoted_metrics,public_metrics,referenced_tweets,source,text,withheld\n\nDefault values:\nid,text\n\nOAuth1.0a User Context authorization required if any of the following fields are included in the request:\nnon_public_metrics,organic_metrics,promoted_metrics",
          "disabled": true
        }
      ],
      "variable": [
        {
          "key": "username",
          "value": "",
          "type": "string",
          "description": "Required. Enter a single Twitter username (handle)."
        }
      ]
    },
    "description": "This endpoint returns details about a user by username.\n\nFor full details, see the [API reference](https://developer.twitter.com/en/docs/twitter-api/users/lookup/api-reference/get-users-by-username-username) for this endpoint.\n\n[Sign up](https://t.co/signup) for the Twitter API"
  },
  "response": [
    {
      "name": "200 Success - User Not Found",
      "originalRequest": {
        "method": "GET",
        "header": [
        ],
        "url": {
          "raw": "https://api.twitter.com/2/users/by/username/:username",
          "protocol": "https",
          "host": [
            "api",
            "twitter",
            "com"
          ],
          "path": [
            "2",
            "users",
            "by",
            "username",
            ":username"
          ],
          "query": [
            {
              "key": "user.fields",
              "value": "",
              "description": "created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld",
              "disabled": true
            },
            {
              "key": "expansions",
              "value": "",
              "description": "pinned_tweet_id",
              "disabled": true
            },
            {
              "key": "tweet.fields",
              "value": "",
              "description": "attachments,author_id,context_annotations,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,non_public_metrics,organic_metrics,possibly_sensitive,promoted_metrics,public_metrics,referenced_tweets,source,text,withheld",
              "disabled": true
            }
          ],
          "variable": [
            {
              "key": "username",
              "value": "TwitterDec"
            }
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "content-disposition",
          "value": "attachment; filename=json.json"
        },
        {
          "key": "content-encoding",
          "value": "gzip"
        },
        {
          "key": "content-length",
          "value": "184"
        },
        {
          "key": "content-type",
          "value": "application/json; charset=utf-8"
        },
        {
          "key": "date",
          "value": "Fri, 26 Jun 2020 15:32:08 GMT"
        },
        {
          "key": "server",
          "value": "tsa_b"
        },
        {
          "key": "strict-transport-security",
          "value": "max-age=631138519"
        },
        {
          "key": "x-access-level",
          "value": "read"
        },
        {
          "key": "x-connection-hash",
          "value": "bf6b8cccb0bc95bc56a50be4db9a2d09"
        },
        {
          "key": "x-content-type-options",
          "value": "nosniff"
        },
        {
          "key": "x-frame-options",
          "value": "SAMEORIGIN"
        },
        {
          "key": "x-rate-limit-limit",
          "value": "15"
        },
        {
          "key": "x-rate-limit-remaining",
          "value": "4"
        },
        {
          "key": "x-rate-limit-reset",
          "value": "1593186139"
        },
        {
          "key": "x-response-time",
          "value": "207"
        },
        {
          "key": "x-xss-protection",
          "value": "0"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"errors\": [\n        {\n            \"detail\": \"Could not find user with username: [TwitterDec].\",\n            \"title\": \"Not Found Error\",\n            \"resource_type\": \"user\",\n            \"parameter\": \"username\",\n            \"value\": \"TwitterDec\",\n            \"type\": \"https://api.twitter.com/2/problems/resource-not-found\"\n        }\n    ]\n}"
    },
    {
      "name": "200 Success - Request Fields for User and Expanded Pinned Tweet",
      "originalRequest": {
        "method": "GET",
        "header": [
        ],
        "url": {
          "raw": "https://api.twitter.com/2/users/by/username/:username?user.fields=created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,url,username,verified,withheld&expansions=pinned_tweet_id&tweet.fields=attachments,author_id,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,possibly_sensitive,referenced_tweets,source,text,withheld",
          "protocol": "https",
          "host": [
            "api",
            "twitter",
            "com"
          ],
          "path": [
            "2",
            "users",
            "by",
            "username",
            ":username"
          ],
          "query": [
            {
              "key": "user.fields",
              "value": "created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,url,username,verified,withheld",
              "description": "created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld"
            },
            {
              "key": "expansions",
              "value": "pinned_tweet_id",
              "description": "pinned_tweet_id"
            },
            {
              "key": "tweet.fields",
              "value": "attachments,author_id,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,possibly_sensitive,referenced_tweets,source,text,withheld",
              "description": "attachments,author_id,context_annotations,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,non_public_metrics,organic_metrics,possibly_sensitive,promoted_metrics,public_metrics,referenced_tweets,source,text,withheld"
            }
          ],
          "variable": [
            {
              "key": "username",
              "value": "TwitterDev"
            }
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "content-disposition",
          "value": "attachment; filename=json.json"
        },
        {
          "key": "content-encoding",
          "value": "gzip"
        },
        {
          "key": "content-length",
          "value": "1012"
        },
        {
          "key": "content-type",
          "value": "application/json; charset=utf-8"
        },
        {
          "key": "date",
          "value": "Fri, 26 Jun 2020 15:29:38 GMT"
        },
        {
          "key": "server",
          "value": "tsa_b"
        },
        {
          "key": "strict-transport-security",
          "value": "max-age=631138519"
        },
        {
          "key": "x-access-level",
          "value": "read"
        },
        {
          "key": "x-connection-hash",
          "value": "bf6b8cccb0bc95bc56a50be4db9a2d09"
        },
        {
          "key": "x-content-type-options",
          "value": "nosniff"
        },
        {
          "key": "x-frame-options",
          "value": "SAMEORIGIN"
        },
        {
          "key": "x-rate-limit-limit",
          "value": "15"
        },
        {
          "key": "x-rate-limit-remaining",
          "value": "8"
        },
        {
          "key": "x-rate-limit-reset",
          "value": "1593186139"
        },
        {
          "key": "x-response-time",
          "value": "253"
        },
        {
          "key": "x-xss-protection",
          "value": "0"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"data\": {\n        \"created_at\": \"2013-12-14T04:35:55.000Z\",\n        \"description\": \"The voice of Twitter's #DevRel team, and your official source for updates, news, & events about Twitter's API. \\n\\n#BlackLivesMatter\",\n        \"entities\": {\n            \"url\": {\n                \"urls\": [\n                    {\n                        \"start\": 0,\n                        \"end\": 23,\n                        \"url\": \"https://t.co/3ZX3TNiZCY\",\n                        \"expanded_url\": \"https://developer.twitter.com/en/community\",\n                        \"display_url\": \"developer.twitter.com/en/community\"\n                    }\n                ]\n            },\n            \"description\": {\n                \"hashtags\": [\n                    {\n                        \"start\": 23,\n                        \"end\": 30,\n                        \"tag\": \"DevRel\"\n                    },\n                    {\n                        \"start\": 113,\n                        \"end\": 130,\n                        \"tag\": \"BlackLivesMatter\"\n                    }\n                ]\n            }\n        },\n        \"id\": \"2244994945\",\n        \"location\": \"127.0.0.1\",\n        \"name\": \"Twitter Dev\",\n        \"pinned_tweet_id\": \"1255542774432063488\",\n        \"profile_image_url\": \"https://pbs.twimg.com/profile_images/1267175364003901441/tBZNFAgA_normal.jpg\",\n        \"protected\": false,\n        \"url\": \"https://t.co/3ZX3TNiZCY\",\n        \"username\": \"TwitterDev\",\n        \"verified\": true\n    },\n    \"includes\": {\n        \"tweets\": [\n            {\n                \"author_id\": \"2244994945\",\n                \"conversation_id\": \"1255542774432063488\",\n                \"created_at\": \"2020-04-29T17:01:38.000Z\",\n                \"entities\": {\n                    \"urls\": [\n                        {\n                            \"start\": 264,\n                            \"end\": 287,\n                            \"url\": \"https://t.co/BPqMcQzhId\",\n                            \"expanded_url\": \"https://blog.twitter.com/developer/en_us/topics/tools/2020/covid19_public_conversation_data.html\",\n                            \"display_url\": \"blog.twitter.com/developer/en_u…\",\n                            \"images\": [\n                                {\n                                    \"url\": \"https://pbs.twimg.com/news_img/1274730688919613440/SEsqlE16?format=jpg&name=orig\",\n                                    \"width\": 1600,\n                                    \"height\": 600\n                                },\n                                {\n                                    \"url\": \"https://pbs.twimg.com/news_img/1274730688919613440/SEsqlE16?format=jpg&name=150x150\",\n                                    \"width\": 150,\n                                    \"height\": 150\n                                }\n                            ],\n                            \"status\": 200,\n                            \"title\": \"Enabling study of the public conversation in a time of crisis\",\n                            \"description\": \"To further support our company’s ongoing efforts, we want to enable developers and researchers to study the public conversation on COVID-19 in real-time.\",\n                            \"unwound_url\": \"https://blog.twitter.com/developer/en_us/topics/tools/2020/covid19_public_conversation_data.html\"\n                        }\n                    ]\n                },\n                \"id\": \"1255542774432063488\",\n                \"lang\": \"en\",\n                \"possibly_sensitive\": false,\n                \"source\": \"Twitter Web App\",\n                \"text\": \"During these unprecedented times, what’s happening on Twitter can help the world better understand &amp; respond to the pandemic. \\n\\nWe're launching a free COVID-19 stream endpoint so qualified devs &amp; researchers can study the public conversation in real-time. https://t.co/BPqMcQzhId\"\n            }\n        ]\n    }\n}"
    },
    {
      "name": "429 Rate Limit Exceeded",
      "originalRequest": {
        "method": "GET",
        "header": [
        ],
        "url": {
          "raw": "https://api.twitter.com/2/users/by/username/:username?user.fields=created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld&expansions=pinned_tweet_id&tweet.fields=attachments,author_id,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,possibly_sensitive,referenced_tweets,source,text,withheld",
          "protocol": "https",
          "host": [
            "api",
            "twitter",
            "com"
          ],
          "path": [
            "2",
            "users",
            "by",
            "username",
            ":username"
          ],
          "query": [
            {
              "key": "user.fields",
              "value": "created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld",
              "description": "created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld"
            },
            {
              "key": "expansions",
              "value": "pinned_tweet_id",
              "description": "pinned_tweet_id"
            },
            {
              "key": "tweet.fields",
              "value": "attachments,author_id,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,possibly_sensitive,referenced_tweets,source,text,withheld",
              "description": "attachments,author_id,context_annotations,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,non_public_metrics,organic_metrics,possibly_sensitive,promoted_metrics,public_metrics,referenced_tweets,source,text,withheld"
            }
          ],
          "variable": [
            {
              "key": "username",
              "value": "TwitterDev"
            }
          ]
        }
      },
      "status": "Too Many Requests",
      "code": 429,
      "_postman_previewlanguage": "plain",
      "header": [
        {
          "key": "content-encoding",
          "value": "gzip"
        },
        {
          "key": "content-length",
          "value": "46"
        },
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          "key": "content-type",
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        },
        {
          "key": "date",
          "value": "Fri, 26 Jun 2020 15:18:23 GMT"
        },
        {
          "key": "server",
          "value": "tsa_b"
        },
        {
          "key": "strict-transport-security",
          "value": "max-age=631138519"
        },
        {
          "key": "x-connection-hash",
          "value": "bf6b8cccb0bc95bc56a50be4db9a2d09"
        },
        {
          "key": "x-rate-limit-limit",
          "value": "15"
        },
        {
          "key": "x-rate-limit-remaining",
          "value": "0"
        },
        {
          "key": "x-rate-limit-reset",
          "value": "1593185073"
        },
        {
          "key": "x-response-time",
          "value": "7"
        }
      ],
      "cookie": [
      ],
      "body": "Rate limit exceeded\n"
    },
    {
      "name": "200 Success - Default Payload",
      "originalRequest": {
        "method": "GET",
        "header": [
        ],
        "url": {
          "raw": "https://api.twitter.com/2/users/by/username/:username",
          "protocol": "https",
          "host": [
            "api",
            "twitter",
            "com"
          ],
          "path": [
            "2",
            "users",
            "by",
            "username",
            ":username"
          ],
          "query": [
            {
              "key": "user.fields",
              "value": "",
              "description": "created_at,description,entities,id,location,name,pinned_tweet_id,profile_image_url,protected,public_metrics,url,username,verified,withheld",
              "disabled": true
            },
            {
              "key": "expansions",
              "value": "",
              "description": "pinned_tweet_id",
              "disabled": true
            },
            {
              "key": "tweet.fields",
              "value": "",
              "description": "attachments,author_id,context_annotations,conversation_id,created_at,entities,geo,id,in_reply_to_user_id,lang,non_public_metrics,organic_metrics,possibly_sensitive,promoted_metrics,public_metrics,referenced_tweets,source,text,withheld",
              "disabled": true
            }
          ],
          "variable": [
            {
              "key": "username",
              "value": "TwitterDev"
            }
          ]
        }
      },
      "status": "OK",
      "code": 200,
      "_postman_previewlanguage": "json",
      "header": [
        {
          "key": "content-disposition",
          "value": "attachment; filename=json.json"
        },
        {
          "key": "content-encoding",
          "value": "gzip"
        },
        {
          "key": "content-length",
          "value": "83"
        },
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          "key": "content-type",
          "value": "application/json; charset=utf-8"
        },
        {
          "key": "date",
          "value": "Fri, 26 Jun 2020 15:31:35 GMT"
        },
        {
          "key": "server",
          "value": "tsa_b"
        },
        {
          "key": "strict-transport-security",
          "value": "max-age=631138519"
        },
        {
          "key": "x-access-level",
          "value": "read"
        },
        {
          "key": "x-connection-hash",
          "value": "bf6b8cccb0bc95bc56a50be4db9a2d09"
        },
        {
          "key": "x-content-type-options",
          "value": "nosniff"
        },
        {
          "key": "x-frame-options",
          "value": "SAMEORIGIN"
        },
        {
          "key": "x-rate-limit-limit",
          "value": "15"
        },
        {
          "key": "x-rate-limit-remaining",
          "value": "6"
        },
        {
          "key": "x-rate-limit-reset",
          "value": "1593186139"
        },
        {
          "key": "x-response-time",
          "value": "37"
        },
        {
          "key": "x-xss-protection",
          "value": "0"
        }
      ],
      "cookie": [
      ],
      "body": "{\n    \"data\": {\n        \"id\": \"2244994945\",\n        \"name\": \"Twitter Dev\",\n        \"username\": \"TwitterDev\"\n    }\n}"
    }
  ]
}