Files
llama.cpp/tools/server/server-cors-proxy.h
T
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

---------

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

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2.0 KiB
C++

#pragma once
#include "common.h"
#include "http.h"
#include <string>
#include <unordered_set>
#include <list>
#include <map>
#include "server-http.h"
static server_http_res_ptr proxy_request(const server_http_req & req, std::string method) {
std::string target_url = req.get_param("url");
common_http_url parsed_url = common_http_parse_url(target_url);
if (parsed_url.host.empty()) {
throw std::runtime_error("invalid target URL: missing host");
}
if (parsed_url.path.empty()) {
parsed_url.path = "/";
}
if (!parsed_url.password.empty()) {
throw std::runtime_error("authentication in target URL is not supported");
}
if (parsed_url.scheme != "http" && parsed_url.scheme != "https") {
throw std::runtime_error("unsupported URL scheme in target URL: " + parsed_url.scheme);
}
SRV_INF("proxying %s request to %s://%s:%i%s\n", method.c_str(), parsed_url.scheme.c_str(), parsed_url.host.c_str(), parsed_url.port, parsed_url.path.c_str());
std::map<std::string, std::string> headers;
for (auto [key, value] : req.headers) {
auto new_key = key;
if (string_starts_with(new_key, "x-proxy-header-")) {
string_replace_all(new_key, "x-proxy-header-", "");
}
headers[new_key] = value;
}
auto proxy = std::make_unique<server_http_proxy>(
method,
parsed_url.scheme,
parsed_url.host,
parsed_url.port,
parsed_url.path,
headers,
req.body,
req.files,
req.should_stop,
600, // timeout_read (default to 10 minutes)
600 // timeout_write (default to 10 minutes)
);
return proxy;
}
static server_http_context::handler_t proxy_handler_post = [](const server_http_req & req) -> server_http_res_ptr {
return proxy_request(req, "POST");
};
static server_http_context::handler_t proxy_handler_get = [](const server_http_req & req) -> server_http_res_ptr {
return proxy_request(req, "GET");
};