BigPizzaV3/CodexPlusPlus · error

图片 edits 请求缺少 Content-Type

Error message

图片 edits 请求缺少 Content-Type

What it means

For image edits requests, open_image_proxy_request requires a Content-Type header because edits use multipart or specific media types that cannot be defaulted. Generations requests default to application/json, but an edits request with an empty/missing Content-Type bails. The throw happens before the upstream request is built.

Solutions

1. Ensure the client sends a Content-Type header (e.g. multipart/form-data with boundary) on image edits requests
2. If calling the internal API directly, pass the original request's content type to open_image_edits_proxy_request
3. Use the generations endpoint instead when submitting pure JSON requests

if endpoint_is_edits && content_type.trim().is_empty() { return Err("edits request requires Content-Type"); }

match open_image_edits_proxy_request(...) {
    Err(e) if e.to_string().contains("缺少 Content-Type") => eprintln!("请为 edits 请求设置 Content-Type（如 multipart/form-data）: {e}"),
    other => other?,
}

When it happens

Trigger: Calling open_image_edits_proxy_request (via open_image_proxy_request) with content_type empty or whitespace after trimming.

Common situations: Client stripped the Content-Type header on the inbound edits request; a gateway/intermediary removed it; code constructing the edits proxy call forgot to pass the inbound content type.

Understand the failure class

Background: "missing required argument" and "the following required arguments were not provided": what required-argument errors mean and how to fix them — this error's family across 20 libraries.

Related errors

• 创建失败
• Base URL 不能为空
• DreamSkin 服务返回了不支持的内容类型：
• 微信二维码响应缺少必要字段
• LLM Bridge 仅支持 POST 请求

AI-assisted analysis of BigPizzaV3/CodexPlusPlus@b1ed92e5e4 (2026-09-19). Data as JSON: /api/errors/04616a8e66c4c09e. Report an issue: GitHub.

Appendix: source

Thrown at crates/codex-plus-core/src/protocol_proxy.rs:1002

        crate::relay_config::relay_profile_base_url(&relay)
    } else {
        relay.upstream_base_url.trim().to_string()
    };
    if is_local_protocol_proxy_base_url(&base_url) {
        anyhow::bail!("图片上游 Base URL 不能指向本地协议代理");
    }
    if base_url.trim().is_empty() {
        anyhow::bail!("图片上游 Base URL 不能为空");
    }
    if relay.api_key.trim().is_empty() && !relay.uses_no_auth() {
        anyhow::bail!("图片上游 Key 不能为空");
    }
    let content_type = content_type.trim();
    let content_type = if content_type.is_empty() {
        match endpoint_kind {
            ImageProxyEndpoint::Generations => "application/json",
            ImageProxyEndpoint::Edits => {
                anyhow::bail!("图片 edits 请求缺少 Content-Type");
            }
        }
    } else {
        content_type
    };
    let endpoint = endpoint_kind.url(&base_url);
    let wire_api = endpoint_kind.wire_api();
    let _ = crate::diagnostic_log::append_diagnostic_log(
        "protocol_proxy.image_request",
        json!({
            "relayId": relay.id,
            "relayName": relay.name,
            "endpoint": endpoint,
            "wireApi": wire_api,
            "bodyBytes": body.len(),
            "endpointKind": endpoint_kind.name()
        }),
    );

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