60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
#include <stddef.h>
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#include <chttp.h>
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// This example shows how undo a response that is being built
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// when an error occurs.
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int main(void)
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{
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http_global_init();
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HTTP_Server *server = http_server_init(HTTP_STR("127.0.0.1"), 8080);
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if (server == NULL)
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return -1;
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for (;;) {
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HTTP_Request *req;
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HTTP_ResponseHandle res;
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int ret = http_server_wait(server, &req, &res);
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if (ret < 0) return -1;
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// Say we are building a request..
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http_response_status(res, 200);
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http_response_header(res, HTTP_STR("Content-Type: text/plain"));
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// .. and in the middle of building an error condition
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// occurs. Maybe a file was missing or an allocation fails.
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// The proper response in this case would be a code 500
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// with an error message, but we already wrote the first
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// part of the response assuming the operation would succede.
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//
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// You can use the *_undo function to reset the response
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// building process
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bool error_occurred = true;
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if (error_occurred) {
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http_response_undo(res);
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// Now we are back to setting the status code
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http_response_status(res, 500);
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http_response_header(res, HTTP_STR("Content-Type: text/plain"));
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http_response_body(res, HTTP_STR("An error occurred!"));
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http_response_done(res);
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} else {
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// If no error occures, we finish as planned
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http_response_body(res, HTTP_STR("Hello, world!"));
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http_response_done(res);
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}
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}
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http_server_free(server);
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http_global_free();
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return 0;
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}
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