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fix(ebpf): correctly handle provisional HTTP 1xx responses #225

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fix(ebpf): correctly handle provisional HTTP 1xx responses #225

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3 changes: 3 additions & 0 deletions ebpftracer/ebpf/l7/http.c
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Original file line number Diff line number Diff line change
Expand Up @@ -57,5 +57,8 @@ int is_http_response(char *buf, __s32 *status) {
return 0;
}
*status = (b[9]-'0')*100 + (b[10]-'0')*10 + (b[11]-'0');
if (*status / 100 == 1) {
return 2; // Return 2 to indicate a provisional response.
}
return 1;
}
3 changes: 3 additions & 0 deletions ebpftracer/ebpf/l7/l7.c
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Expand Up @@ -449,6 +449,9 @@ int trace_exit_read(void *ctx, __u64 id, __u32 pid, __u16 is_tls, long int ret)
COPY_PAYLOAD(e->payload, req->payload_size, req->payload);
if (e->protocol == PROTOCOL_HTTP) {
response = is_http_response(payload, &e->status);
if (response == 2) {
return 0;
}
} else if (e->protocol == PROTOCOL_POSTGRES) {
response = is_postgres_response(payload, ret, &e->status);
if (req->request_type == POSTGRES_FRAME_PARSE) {
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