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tha80 983ca8992e server: (router) Forward form-data to model server (Fixes #22044) (#22118)
* This commit enables the router to forward form-data to model server.
Fixes #22044 (enabling to use the /v1/audio/transcriptions in router mode)

* * Applied the suggestion from Copilots first comment: using the non-throwing json::parse overload.
* Addressed Copilots third comment by extending the files representation to also include filename and content-type
* Addressed Copilots fourth comment by making the RNG thread_local

* Changed variable body from std::string to std::ostringstream in build_multipart_body
as suggested by ngxson in https://github.com/ggml-org/llama.cpp/pull/22118#discussion_r3127099053

* Added sanitize_field lambda in build_multipart_body for key, filename and content_type
as suggested by ngxson in https://github.com/ggml-org/llama.cpp/pull/22118#discussion_r3127104647

* explicitly checking if value/item is string before calling value/item.get<std::string>()
as requested by ngxson in https://github.com/ggml-org/llama.cpp/pull/22118#discussion_r3127111279

* Added double quote to the sanitize lambda and throw on json parse failure

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Co-authored-by: Ralph Paßgang <ralph@trust-it.de>
2026-04-27 23:55:00 +02:00

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C++

// Chat conversion functions for server (Responses API, Anthropic API, OAI streaming diffs)
#pragma once
#include "chat.h"
#include "server-common.h"
#include "server-http.h"
#include <nlohmann/json_fwd.hpp>
using json = nlohmann::ordered_json;
// Convert OpenAI Responses API format to OpenAI Chat Completions API format
json server_chat_convert_responses_to_chatcmpl(const json & body);
// Convert Anthropic Messages API format to OpenAI Chat Completions API format
json server_chat_convert_anthropic_to_oai(const json & body);
// convert OpenAI transcriptions API format to OpenAI Chat Completions API format
json convert_transcriptions_to_chatcmpl(
const json & body,
const common_chat_templates * tmpls,
const std::map<std::string, uploaded_file> & in_files,
std::vector<raw_buffer> & out_files);
json server_chat_msg_diff_to_json_oaicompat(const common_chat_msg_diff & diff);