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fix: auto set Content-Type header #17

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Merged
hars-21 merged 1 commit into from
Jun 22, 2026
Merged

fix: auto set Content-Type header #17

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15 changes: 12 additions & 3 deletions src/runner.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -63,9 +63,6 @@ pub fn fetch(
.map_err(|_| format!("Invalid header value for '{key}': {value}"))?;
headers.insert(name, val);
}
if !headers.contains_key(CONTENT_TYPE) {
headers.insert(CONTENT_TYPE, HeaderValue::from_static("application/json"));
}
req_builder = req_builder.headers(headers);

// Query Params
Expand All @@ -75,6 +72,18 @@ pub fn fetch(

// Body
if let Some(body) = &request.body {
let trimmed = body.trim();
if (trimmed.starts_with('{') || trimmed.starts_with('['))
&& !global_headers
.keys()
.any(|k| k.eq_ignore_ascii_case("content-type"))
&& !request
.headers
.keys()
.any(|k| k.eq_ignore_ascii_case("content-type"))
{
req_builder = req_builder.header(CONTENT_TYPE, "application/json");
}
req_builder = req_builder.body(body.clone());
}

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